Infectious Diseases

In pediatric Crohn’s disease, a Clostridioides difficile infection detected within the first year after diagnosis is associated with a shorter time to first bowel resection surgery, according to a study that included both a retrospective and prospective analysis. The researchers also found evidence that changes in methionine biosynthesis and depletion of beneficial bacteria may contribute to risk of surgery.

C. difficile infection (CDI) disproportionately affects individuals with inflammatory bowel disease (IBD). Pediatric IBD patients have a 34% risk of recurrent CDI infection, compared with 7.5% in the general population. Previous research found that adults with ulcerative colitis and CDI are at more risk of colectomy, but the finding has not been replicated in children.

In a study published in Inflammatory Bowel Diseases, researchers led by Jennifer Hellmann and Lee Denson of the University of Cincinnati conducted a single-center retrospective analysis of 75 pediatric Crohn’s disease patients. They also conducted a prospective study of 70 pediatric Crohn’s disease patients, using shotgun metagenome sequencing to examine the relationship between microbiota composition and C. difficile carriage or surgery history.

Nineteen percent of patients tested positive for C. difficile. Use of antibiotics was associated with C. difficile (odds ratio, 7.9; P = .02). Of patients who underwent C. difficile testing in the first year, 23 went on to have surgery: 21% who were C. difficile negative required surgery, compared with 67% of those who were positive (hazard ratio, 4.4; P = .0003). The mean time to surgery was 527 days for C. difficile–positive patients and 1,268 days for those who were negative.

A multivariate regression analysis on 54 patients with complete data sets showed that the presence of C. difficile was associated with increased risk of surgery (OR, 16.2; P = .0006). When the analysis was run on all 73 patients, using null value for missing data, the results were similar (OR, 9.17; P = .008).

Shotgun sequencing found that 47 of 114 bacterial species that were associated with the presence of C. difficile were also associated with prior surgery for Crohn’s disease. Species included some that may play a role in mucosal homeostasis, such as Bifidobacterium breve and several Alistipes and Ruminococcus species. That suggests that a reduction in the numbers of these taxa may be associated with C. difficile presence and surgical risk.

The researchers also found that methionine synthesis pathways were depressed in C. difficile–positive and surgery patients. Methionine may bolster antioxidant capacity and improve villus morphology. IBD patients with dysbiosis and those experiencing Crohn’s disease exacerbations have been shown to have decreased methionine pathway activity, suggesting methionine biosynthesis changes have clinical relevance.

The study was funded by the National Institutes of Health.

SOURCE: Hellmann J et al. Inflamm Bowel Dis. 2020. doi: 10.1093/ibd/izz263.

In pediatric Crohn’s disease, a Clostridioides difficile infection detected within the first year after diagnosis is associated with a shorter time to first bowel resection surgery, according to a study that included both a retrospective and prospective analysis. The researchers also found evidence that changes in methionine biosynthesis and depletion of beneficial bacteria may contribute to risk of surgery.

C. difficile infection (CDI) disproportionately affects individuals with inflammatory bowel disease (IBD). Pediatric IBD patients have a 34% risk of recurrent CDI infection, compared with 7.5% in the general population. Previous research found that adults with ulcerative colitis and CDI are at more risk of colectomy, but the finding has not been replicated in children.

In a study published in Inflammatory Bowel Diseases, researchers led by Jennifer Hellmann and Lee Denson of the University of Cincinnati conducted a single-center retrospective analysis of 75 pediatric Crohn’s disease patients. They also conducted a prospective study of 70 pediatric Crohn’s disease patients, using shotgun metagenome sequencing to examine the relationship between microbiota composition and C. difficile carriage or surgery history.

Nineteen percent of patients tested positive for C. difficile. Use of antibiotics was associated with C. difficile (odds ratio, 7.9; P = .02). Of patients who underwent C. difficile testing in the first year, 23 went on to have surgery: 21% who were C. difficile negative required surgery, compared with 67% of those who were positive (hazard ratio, 4.4; P = .0003). The mean time to surgery was 527 days for C. difficile–positive patients and 1,268 days for those who were negative.

A multivariate regression analysis on 54 patients with complete data sets showed that the presence of C. difficile was associated with increased risk of surgery (OR, 16.2; P = .0006). When the analysis was run on all 73 patients, using null value for missing data, the results were similar (OR, 9.17; P = .008).

Shotgun sequencing found that 47 of 114 bacterial species that were associated with the presence of C. difficile were also associated with prior surgery for Crohn’s disease. Species included some that may play a role in mucosal homeostasis, such as Bifidobacterium breve and several Alistipes and Ruminococcus species. That suggests that a reduction in the numbers of these taxa may be associated with C. difficile presence and surgical risk.

The researchers also found that methionine synthesis pathways were depressed in C. difficile–positive and surgery patients. Methionine may bolster antioxidant capacity and improve villus morphology. IBD patients with dysbiosis and those experiencing Crohn’s disease exacerbations have been shown to have decreased methionine pathway activity, suggesting methionine biosynthesis changes have clinical relevance.

The study was funded by the National Institutes of Health.

SOURCE: Hellmann J et al. Inflamm Bowel Dis. 2020. doi: 10.1093/ibd/izz263.

In pediatric Crohn’s disease, a Clostridioides difficile infection detected within the first year after diagnosis is associated with a shorter time to first bowel resection surgery, according to a study that included both a retrospective and prospective analysis. The researchers also found evidence that changes in methionine biosynthesis and depletion of beneficial bacteria may contribute to risk of surgery.

C. difficile infection (CDI) disproportionately affects individuals with inflammatory bowel disease (IBD). Pediatric IBD patients have a 34% risk of recurrent CDI infection, compared with 7.5% in the general population. Previous research found that adults with ulcerative colitis and CDI are at more risk of colectomy, but the finding has not been replicated in children.

In a study published in Inflammatory Bowel Diseases, researchers led by Jennifer Hellmann and Lee Denson of the University of Cincinnati conducted a single-center retrospective analysis of 75 pediatric Crohn’s disease patients. They also conducted a prospective study of 70 pediatric Crohn’s disease patients, using shotgun metagenome sequencing to examine the relationship between microbiota composition and C. difficile carriage or surgery history.

Nineteen percent of patients tested positive for C. difficile. Use of antibiotics was associated with C. difficile (odds ratio, 7.9; P = .02). Of patients who underwent C. difficile testing in the first year, 23 went on to have surgery: 21% who were C. difficile negative required surgery, compared with 67% of those who were positive (hazard ratio, 4.4; P = .0003). The mean time to surgery was 527 days for C. difficile–positive patients and 1,268 days for those who were negative.

A multivariate regression analysis on 54 patients with complete data sets showed that the presence of C. difficile was associated with increased risk of surgery (OR, 16.2; P = .0006). When the analysis was run on all 73 patients, using null value for missing data, the results were similar (OR, 9.17; P = .008).

Shotgun sequencing found that 47 of 114 bacterial species that were associated with the presence of C. difficile were also associated with prior surgery for Crohn’s disease. Species included some that may play a role in mucosal homeostasis, such as Bifidobacterium breve and several Alistipes and Ruminococcus species. That suggests that a reduction in the numbers of these taxa may be associated with C. difficile presence and surgical risk.

The researchers also found that methionine synthesis pathways were depressed in C. difficile–positive and surgery patients. Methionine may bolster antioxidant capacity and improve villus morphology. IBD patients with dysbiosis and those experiencing Crohn’s disease exacerbations have been shown to have decreased methionine pathway activity, suggesting methionine biosynthesis changes have clinical relevance.

The study was funded by the National Institutes of Health.

SOURCE: Hellmann J et al. Inflamm Bowel Dis. 2020. doi: 10.1093/ibd/izz263.

Vancomycin followed by fecal microbiota transplant (FMT) was associated with reduced Clostridioides difficile (C. diff)-related mortality in patients hospitalized with refractory severe or fulminant C. diff infection (CDI) at a single center. The improvements came after Indiana University implemented an FMT option in 2013.

About 8% of C. diff patients develop severe or fulminant CDI (SFCDI), which can lead to toxic colon and multiorgan failure. Surgery is the current recommended treatment for these patients if they are refractory to vancomycin, but 30-day mortality is above 40%. FMT is recommended for recurrent CDI, and it achieves cure rates greater than 80%, along with fewer relapses compared with anti-CDI antibiotic therapy.

FMT has been shown to be effective for SFCDI, with a 91% cure rate for serious CDI and 66% for fulminant CDI.

In the study published in the September issue of Clinical Gastroenterology and Hepatology, researchers led by Yao-Wen Cheng, MD, and Monika Fischer, MD, of Indiana University, assessed the effect of FMT on SFCDI after their institution adopted it as a treatment protocol for SFCDI. Patients could receive FMT if there was evidence that their SFCDI was refractory, or if they had two or more CDI recurrences. The treatment includes oral vancomycin and pseudomembrane-driven sequential FMT.

Two hundred five patients were admitted before FMT implementation, 225 after. Fifty patients received FMT because of refractory SFCDI. A median of two FMTs was conducted per patient. 21 other patients received FMT for nonrefractory SFCDI or other conditions, including 18 patients with multiple recurrent CDI.

Thirty-day CDI-related mortality dropped after FMT implementation (4.4% versus 10.2%; P =.02). This was true in both the fulminant subset (9.1% versus 21.3%; P =.015) and the refractory group (12.1% versus 43.2%; P < .001).

The researchers used segmented logistic regression to determine if the improved outcomes could be due to nontreatment factors that varied over time, and found that the difference in CDI-related mortality was eliminated except for refractory SFCDI patients (odds of mortality after FMT implementation, 0.09; P =.023). There was no significant difference between those receiving non-CDI antibiotics (4.8%) and those who did not (6.9%; P =.75).

FMT was associated with lower frequency of CDI-related colectomy overall (2.7% versus 6.8%; P =.041), as well as in the fulminant (5.5% versus 15.7%; P =.017) and refractory subgroups (7.6% versus 31.8%; P =.001).

The findings follow another study that showed improved 3-month mortality for FMT among patients hospitalized with severe CDI (12.1% versus 42.2%; P < .003).

The results underscore the utility of FMT for SFCDI, and suggest it might have the most benefit in refractory SFCDI. The authors believe that FMT should be an alternative to colectomy when first-line anti-CDI antibiotics are partially or completely ineffective. In the absence of FMT, patients who go on to fail vancomycin or fidaxomicin will likely continue to be managed medically, with up to 80% mortality, or through salvage colectomy, with postsurgical morality rates of 30-40%.

Although a randomized trial could answer the question of FMT efficacy more definitively, it is unlikely to be conducted for ethical reasons.

“Further investigation is required to clearly define FMT’s role and timing in the clinical course of severe and fulminant CDI. However, our study suggests that FMT should be offered to patients with severe and fulminant CDI who do not respond to a 5-day course of anti-CDI antibiotics and may be considered in lieu of or before colectomy,” the researchers wrote.

No source of funding was disclosed.

SOURCE: Cheng YW et al. Clin Gastroenterol Hepatol. 2020;18:2234-43. doi: 10.1016/j.cgh.2019.12.029.

Vancomycin followed by fecal microbiota transplant (FMT) was associated with reduced Clostridioides difficile (C. diff)-related mortality in patients hospitalized with refractory severe or fulminant C. diff infection (CDI) at a single center. The improvements came after Indiana University implemented an FMT option in 2013.

About 8% of C. diff patients develop severe or fulminant CDI (SFCDI), which can lead to toxic colon and multiorgan failure. Surgery is the current recommended treatment for these patients if they are refractory to vancomycin, but 30-day mortality is above 40%. FMT is recommended for recurrent CDI, and it achieves cure rates greater than 80%, along with fewer relapses compared with anti-CDI antibiotic therapy.

FMT has been shown to be effective for SFCDI, with a 91% cure rate for serious CDI and 66% for fulminant CDI.

In the study published in the September issue of Clinical Gastroenterology and Hepatology, researchers led by Yao-Wen Cheng, MD, and Monika Fischer, MD, of Indiana University, assessed the effect of FMT on SFCDI after their institution adopted it as a treatment protocol for SFCDI. Patients could receive FMT if there was evidence that their SFCDI was refractory, or if they had two or more CDI recurrences. The treatment includes oral vancomycin and pseudomembrane-driven sequential FMT.

Two hundred five patients were admitted before FMT implementation, 225 after. Fifty patients received FMT because of refractory SFCDI. A median of two FMTs was conducted per patient. 21 other patients received FMT for nonrefractory SFCDI or other conditions, including 18 patients with multiple recurrent CDI.

Thirty-day CDI-related mortality dropped after FMT implementation (4.4% versus 10.2%; P =.02). This was true in both the fulminant subset (9.1% versus 21.3%; P =.015) and the refractory group (12.1% versus 43.2%; P < .001).

The researchers used segmented logistic regression to determine if the improved outcomes could be due to nontreatment factors that varied over time, and found that the difference in CDI-related mortality was eliminated except for refractory SFCDI patients (odds of mortality after FMT implementation, 0.09; P =.023). There was no significant difference between those receiving non-CDI antibiotics (4.8%) and those who did not (6.9%; P =.75).

FMT was associated with lower frequency of CDI-related colectomy overall (2.7% versus 6.8%; P =.041), as well as in the fulminant (5.5% versus 15.7%; P =.017) and refractory subgroups (7.6% versus 31.8%; P =.001).

The findings follow another study that showed improved 3-month mortality for FMT among patients hospitalized with severe CDI (12.1% versus 42.2%; P < .003).

The results underscore the utility of FMT for SFCDI, and suggest it might have the most benefit in refractory SFCDI. The authors believe that FMT should be an alternative to colectomy when first-line anti-CDI antibiotics are partially or completely ineffective. In the absence of FMT, patients who go on to fail vancomycin or fidaxomicin will likely continue to be managed medically, with up to 80% mortality, or through salvage colectomy, with postsurgical morality rates of 30-40%.

Although a randomized trial could answer the question of FMT efficacy more definitively, it is unlikely to be conducted for ethical reasons.

“Further investigation is required to clearly define FMT’s role and timing in the clinical course of severe and fulminant CDI. However, our study suggests that FMT should be offered to patients with severe and fulminant CDI who do not respond to a 5-day course of anti-CDI antibiotics and may be considered in lieu of or before colectomy,” the researchers wrote.

No source of funding was disclosed.

SOURCE: Cheng YW et al. Clin Gastroenterol Hepatol. 2020;18:2234-43. doi: 10.1016/j.cgh.2019.12.029.

Vancomycin followed by fecal microbiota transplant (FMT) was associated with reduced Clostridioides difficile (C. diff)-related mortality in patients hospitalized with refractory severe or fulminant C. diff infection (CDI) at a single center. The improvements came after Indiana University implemented an FMT option in 2013.

About 8% of C. diff patients develop severe or fulminant CDI (SFCDI), which can lead to toxic colon and multiorgan failure. Surgery is the current recommended treatment for these patients if they are refractory to vancomycin, but 30-day mortality is above 40%. FMT is recommended for recurrent CDI, and it achieves cure rates greater than 80%, along with fewer relapses compared with anti-CDI antibiotic therapy.

FMT has been shown to be effective for SFCDI, with a 91% cure rate for serious CDI and 66% for fulminant CDI.

In the study published in the September issue of Clinical Gastroenterology and Hepatology, researchers led by Yao-Wen Cheng, MD, and Monika Fischer, MD, of Indiana University, assessed the effect of FMT on SFCDI after their institution adopted it as a treatment protocol for SFCDI. Patients could receive FMT if there was evidence that their SFCDI was refractory, or if they had two or more CDI recurrences. The treatment includes oral vancomycin and pseudomembrane-driven sequential FMT.

Two hundred five patients were admitted before FMT implementation, 225 after. Fifty patients received FMT because of refractory SFCDI. A median of two FMTs was conducted per patient. 21 other patients received FMT for nonrefractory SFCDI or other conditions, including 18 patients with multiple recurrent CDI.

Thirty-day CDI-related mortality dropped after FMT implementation (4.4% versus 10.2%; P =.02). This was true in both the fulminant subset (9.1% versus 21.3%; P =.015) and the refractory group (12.1% versus 43.2%; P < .001).

The researchers used segmented logistic regression to determine if the improved outcomes could be due to nontreatment factors that varied over time, and found that the difference in CDI-related mortality was eliminated except for refractory SFCDI patients (odds of mortality after FMT implementation, 0.09; P =.023). There was no significant difference between those receiving non-CDI antibiotics (4.8%) and those who did not (6.9%; P =.75).

FMT was associated with lower frequency of CDI-related colectomy overall (2.7% versus 6.8%; P =.041), as well as in the fulminant (5.5% versus 15.7%; P =.017) and refractory subgroups (7.6% versus 31.8%; P =.001).

The findings follow another study that showed improved 3-month mortality for FMT among patients hospitalized with severe CDI (12.1% versus 42.2%; P < .003).

The results underscore the utility of FMT for SFCDI, and suggest it might have the most benefit in refractory SFCDI. The authors believe that FMT should be an alternative to colectomy when first-line anti-CDI antibiotics are partially or completely ineffective. In the absence of FMT, patients who go on to fail vancomycin or fidaxomicin will likely continue to be managed medically, with up to 80% mortality, or through salvage colectomy, with postsurgical morality rates of 30-40%.

Although a randomized trial could answer the question of FMT efficacy more definitively, it is unlikely to be conducted for ethical reasons.

“Further investigation is required to clearly define FMT’s role and timing in the clinical course of severe and fulminant CDI. However, our study suggests that FMT should be offered to patients with severe and fulminant CDI who do not respond to a 5-day course of anti-CDI antibiotics and may be considered in lieu of or before colectomy,” the researchers wrote.

No source of funding was disclosed.

SOURCE: Cheng YW et al. Clin Gastroenterol Hepatol. 2020;18:2234-43. doi: 10.1016/j.cgh.2019.12.029.

A 42-year-old woman with psoriasis presents for a checkup at the dermatology clinic. Her psoriasis has been fairly stable on methotrexate with no recent flares. She presents her concern of the coronavirus pandemic continuing into the flu season and mentions she would like to minimize her chances of having a respiratory illness. The influenza vaccine has just become available, and she inquires when she can get the vaccine and whether it will interfere with her treatment. What are your recommendations for the patient?

Psoriasis is an immune-mediated, inflammatory skin condition stemming from hyperproliferation of keratinocytes that classically involves erythematous skin plaques with overlying scale. Treatment options vary widely and include topical modalities, phototherapy, immunosuppressants, and biologic agents. Selection of treatment largely depends on the severity and extent of body surface area involvement; systemic therapy generally is indicated when the affected body surface area is greater than 5% to 10%. In patients on systemic therapy, increased susceptibility to infection is a priority concern for prescribing physicians. In the context of continuing immunosuppressive medications, vaccines that reduce susceptibility to infectious diseases can play an important role in reducing morbidity and mortality for these patients; however, an important consideration is that in patients with chronic conditions and frequent hospital visits, vaccines may be administered by various clinicians who may not be familiar with the management of immunosuppressive treatments. It is pivotal for prescribing dermatologists to provide appropriate vaccination instructions for the patient and any future clinicians to ensure vaccine efficacy in these patients.

The intramuscular influenza vaccine is a killed vaccine that is administered annually and has been shown to be safe for use in both immunocompetent and immunocompromised patients.^1,2 Despite its safety, questions remain regarding the efficacy of vaccines while a patient is unable to mount a normal immune response and whether the treatment must be altered to maximize immunogenicity. The common systemic treatment options for psoriasis and any recommendations that can be made regarding administration of the influenza vaccine in that context are outlined in the Table. Given the sparsity of clinical data measuring vaccine immunogenicity in patients with psoriasis, vaccine guidelines are drawn from patients with various conditions who are receiving the same dose of medication as indicated for psoriasis.

A 42-year-old woman with psoriasis presents for a checkup at the dermatology clinic. Her psoriasis has been fairly stable on methotrexate with no recent flares. She presents her concern of the coronavirus pandemic continuing into the flu season and mentions she would like to minimize her chances of having a respiratory illness. The influenza vaccine has just become available, and she inquires when she can get the vaccine and whether it will interfere with her treatment. What are your recommendations for the patient?

Psoriasis is an immune-mediated, inflammatory skin condition stemming from hyperproliferation of keratinocytes that classically involves erythematous skin plaques with overlying scale. Treatment options vary widely and include topical modalities, phototherapy, immunosuppressants, and biologic agents. Selection of treatment largely depends on the severity and extent of body surface area involvement; systemic therapy generally is indicated when the affected body surface area is greater than 5% to 10%. In patients on systemic therapy, increased susceptibility to infection is a priority concern for prescribing physicians. In the context of continuing immunosuppressive medications, vaccines that reduce susceptibility to infectious diseases can play an important role in reducing morbidity and mortality for these patients; however, an important consideration is that in patients with chronic conditions and frequent hospital visits, vaccines may be administered by various clinicians who may not be familiar with the management of immunosuppressive treatments. It is pivotal for prescribing dermatologists to provide appropriate vaccination instructions for the patient and any future clinicians to ensure vaccine efficacy in these patients.

The intramuscular influenza vaccine is a killed vaccine that is administered annually and has been shown to be safe for use in both immunocompetent and immunocompromised patients.^1,2 Despite its safety, questions remain regarding the efficacy of vaccines while a patient is unable to mount a normal immune response and whether the treatment must be altered to maximize immunogenicity. The common systemic treatment options for psoriasis and any recommendations that can be made regarding administration of the influenza vaccine in that context are outlined in the Table. Given the sparsity of clinical data measuring vaccine immunogenicity in patients with psoriasis, vaccine guidelines are drawn from patients with various conditions who are receiving the same dose of medication as indicated for psoriasis.

A 42-year-old woman with psoriasis presents for a checkup at the dermatology clinic. Her psoriasis has been fairly stable on methotrexate with no recent flares. She presents her concern of the coronavirus pandemic continuing into the flu season and mentions she would like to minimize her chances of having a respiratory illness. The influenza vaccine has just become available, and she inquires when she can get the vaccine and whether it will interfere with her treatment. What are your recommendations for the patient?

Psoriasis is an immune-mediated, inflammatory skin condition stemming from hyperproliferation of keratinocytes that classically involves erythematous skin plaques with overlying scale. Treatment options vary widely and include topical modalities, phototherapy, immunosuppressants, and biologic agents. Selection of treatment largely depends on the severity and extent of body surface area involvement; systemic therapy generally is indicated when the affected body surface area is greater than 5% to 10%. In patients on systemic therapy, increased susceptibility to infection is a priority concern for prescribing physicians. In the context of continuing immunosuppressive medications, vaccines that reduce susceptibility to infectious diseases can play an important role in reducing morbidity and mortality for these patients; however, an important consideration is that in patients with chronic conditions and frequent hospital visits, vaccines may be administered by various clinicians who may not be familiar with the management of immunosuppressive treatments. It is pivotal for prescribing dermatologists to provide appropriate vaccination instructions for the patient and any future clinicians to ensure vaccine efficacy in these patients.

The intramuscular influenza vaccine is a killed vaccine that is administered annually and has been shown to be safe for use in both immunocompetent and immunocompromised patients.^1,2 Despite its safety, questions remain regarding the efficacy of vaccines while a patient is unable to mount a normal immune response and whether the treatment must be altered to maximize immunogenicity. The common systemic treatment options for psoriasis and any recommendations that can be made regarding administration of the influenza vaccine in that context are outlined in the Table. Given the sparsity of clinical data measuring vaccine immunogenicity in patients with psoriasis, vaccine guidelines are drawn from patients with various conditions who are receiving the same dose of medication as indicated for psoriasis.

After 2 weeks of declines, the percentage of weekly COVID-19 cases occurring in children increased during the week ending Oct. 8, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

For the week, 14.6% of all COVID-19 cases reported in the United States occurred in children, after 2 consecutive weeks of declines that saw the proportion drop from 16.9% to 12.3%. The cumulative rate of child cases for the entire pandemic is 10.7%, with total child cases in the United States now up to 697,633 and cases among all ages at just over 6.5 million, the AAP and the CHA said Oct. 12 in their weekly COVID-19 report.

Nationally, there were 927 cases reported per 100,000 children as of Oct. 8, with rates at the state level varying from 176 per 100,000 in Vermont to 2,221 per 100,000 in North Dakota. Two other states were over 2,000 cases per 100,000 children: Tennessee (2,155) and South Carolina (2,116), based on data from the health departments of 49 states (New York does not report age distribution), as well as the District of Columbia, New York City, Puerto Rico, and Guam.

Severe illness continues to be rare in children, and national (25 states and New York City) hospitalization rates dropped in the last week. The proportion of hospitalizations occurring in children slipped from a pandemic high of 1.8% the previous week to 1.7% during the week of Oct. 8, and the rate of hospitalizations for children with COVID-19 was down to 1.4% from 1.6% the week before and 1.9% on Sept. 3, the AAP and the CHA said.

Mortality data from 42 states and New York City also show a decline. For the third consecutive week, children represented just 0.06% of all COVID-19 deaths in the United States, down from a high of 0.07% on Sept. 17. Only 0.02% of all cases in children have resulted in death, and that figure has been dropping since early June, when it reached 0.06%, according to the AAP/CHA report. As of Oct. 8, there have been 115 total deaths reported in children.

rfranki@mdedge.com

After 2 weeks of declines, the percentage of weekly COVID-19 cases occurring in children increased during the week ending Oct. 8, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

For the week, 14.6% of all COVID-19 cases reported in the United States occurred in children, after 2 consecutive weeks of declines that saw the proportion drop from 16.9% to 12.3%. The cumulative rate of child cases for the entire pandemic is 10.7%, with total child cases in the United States now up to 697,633 and cases among all ages at just over 6.5 million, the AAP and the CHA said Oct. 12 in their weekly COVID-19 report.

Nationally, there were 927 cases reported per 100,000 children as of Oct. 8, with rates at the state level varying from 176 per 100,000 in Vermont to 2,221 per 100,000 in North Dakota. Two other states were over 2,000 cases per 100,000 children: Tennessee (2,155) and South Carolina (2,116), based on data from the health departments of 49 states (New York does not report age distribution), as well as the District of Columbia, New York City, Puerto Rico, and Guam.

Severe illness continues to be rare in children, and national (25 states and New York City) hospitalization rates dropped in the last week. The proportion of hospitalizations occurring in children slipped from a pandemic high of 1.8% the previous week to 1.7% during the week of Oct. 8, and the rate of hospitalizations for children with COVID-19 was down to 1.4% from 1.6% the week before and 1.9% on Sept. 3, the AAP and the CHA said.

Mortality data from 42 states and New York City also show a decline. For the third consecutive week, children represented just 0.06% of all COVID-19 deaths in the United States, down from a high of 0.07% on Sept. 17. Only 0.02% of all cases in children have resulted in death, and that figure has been dropping since early June, when it reached 0.06%, according to the AAP/CHA report. As of Oct. 8, there have been 115 total deaths reported in children.

rfranki@mdedge.com

After 2 weeks of declines, the percentage of weekly COVID-19 cases occurring in children increased during the week ending Oct. 8, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

For the week, 14.6% of all COVID-19 cases reported in the United States occurred in children, after 2 consecutive weeks of declines that saw the proportion drop from 16.9% to 12.3%. The cumulative rate of child cases for the entire pandemic is 10.7%, with total child cases in the United States now up to 697,633 and cases among all ages at just over 6.5 million, the AAP and the CHA said Oct. 12 in their weekly COVID-19 report.

Nationally, there were 927 cases reported per 100,000 children as of Oct. 8, with rates at the state level varying from 176 per 100,000 in Vermont to 2,221 per 100,000 in North Dakota. Two other states were over 2,000 cases per 100,000 children: Tennessee (2,155) and South Carolina (2,116), based on data from the health departments of 49 states (New York does not report age distribution), as well as the District of Columbia, New York City, Puerto Rico, and Guam.

Severe illness continues to be rare in children, and national (25 states and New York City) hospitalization rates dropped in the last week. The proportion of hospitalizations occurring in children slipped from a pandemic high of 1.8% the previous week to 1.7% during the week of Oct. 8, and the rate of hospitalizations for children with COVID-19 was down to 1.4% from 1.6% the week before and 1.9% on Sept. 3, the AAP and the CHA said.

Mortality data from 42 states and New York City also show a decline. For the third consecutive week, children represented just 0.06% of all COVID-19 deaths in the United States, down from a high of 0.07% on Sept. 17. Only 0.02% of all cases in children have resulted in death, and that figure has been dropping since early June, when it reached 0.06%, according to the AAP/CHA report. As of Oct. 8, there have been 115 total deaths reported in children.

rfranki@mdedge.com

Unlike previous studies focused on vaccine effectiveness (VE) in ambulatory care office visits, Angela P. Campbell, MD, MPH, and associates have uncovered evidence of the overall benefit influenza vaccines play in reducing hospitalizations and emergency department visits in pediatric influenza patients.

Yarinca/istockphoto

“Our data provide important VE estimates against severe influenza in children,” the researchers noted in Pediatrics, adding that the findings “provide important evidence supporting the annual recommendation that all children 6 months and older should receive influenza vaccination.”

Dr. Campbell and colleagues collected ongoing surveillance data from the New Vaccine Surveillance Network (NVSN), which is a network of pediatric hospitals across seven cities, including Kansas City, Mo.; Rochester, N.Y.; Cincinnati; Pittsburgh; Nashville, Tenn.; Houston; and Seattle. The influenza season encompassed the period Nov. 7, 2018 to June 21, 2019.

A total of 2,748 hospitalized children and 2,676 children who had completed ED visits that did not lead to hospitalization were included. Once those under 6 months were excluded, 1,792 hospitalized children were included in the VE analysis; of these, 226 (13%) tested positive for influenza infection, including 211 (93%) with influenza A viruses and 15 (7%) with influenza B viruses. Fully 1,611 of the patients (90%), had verified vaccine status, while 181 (10%) had solely parental reported vaccine status. The researchers reported 88 (5%) of the patients received mechanical ventilation and 7 (<1%) died.

Most noteworthy, the researchers observed a significant reduction in laboratory-confirmed hospitalizations by 41% in children vaccinated against the flu. They further estimated a significant reduction in hospitalizations linked to A(H3N2) and A(H1N1)pdm09 viruses, even in the presence of circulating A(H3N2) viruses that differed from the A(H3N2) vaccine component.

Studies from other countries during the same time period showed that while “significant protection against influenza-associated ambulatory care visits and hospitalizations among children infected with A(H1N1)pdm09 viruses” was observed, the same could not be said for protection against A(H3N2) viruses, which varied among pediatric outpatients in the United States (24%), in England (17% outpatient; 31% inpatient), Europe (46%), and Canada (48%). They explained that such variation in vaccine protection is multifactorial, and includes virus-, host-, and environment-related factors. They also noted that regional variations in circulating viruses, host factors including age, imprinting, and previous vaccination could explain the study’s finding of vaccine protection against both A(H1N1)pdm09 and A(H3N2) viruses.

When comparing VE estimates between ED visits and hospitalizations, the researchers observed one significant difference, that “hospitalized children likely represent more medically complex patients, with 58% having underlying medical conditions and 38% reporting at lease one hospitalization in the past year, compared with 28% and 14% respectively, among ED participants.”

Strengths of the study included the prospective multisite enrollment that provided data across diverse locations and representation from pediatric hospitalizations and ED care, which were not previously strongly represented in the literature. The single-season study with small sample size was considered a limitation, as was the inability to evaluate full and partial vaccine status. Vaccine data also were limited for many of the ED patients observed.

Dr. Campbell and colleagues did caution that while they consider their test-negative design optimal for evaluating both hospitalized and ED patients, they feel their results should not be “interpreted as VE against influenza-associated ambulatory care visits or infections that are not medically attended.”

In a separate interview, Michael E. Pichichero, MD, director of the Rochester General Hospital Research Institute and a clinical professor of pediatrics at the University of Rochester (N.Y.), observed: “There are really no surprises here. A well done contemporary study confirms again the benefits of annual influenza vaccinations for children. Viral coinfections involving SARS-CoV-2 and influenza have been reported from Australia to cause heightened illnesses. That observation provides further impetus for parents to have their children receive influenza vaccinations.”

The researchers cited multiple sources of financial support for their ongoing work, including Sanofi, Quidel, Moderna, Karius, GlaxoSmithKline, Merck, AstraZeneca, and Pfizer. Funding for this study was supported by the Centers for Disease Control and Prevention. Dr. Pichichero said he had no relevant financial disclosures.

SOURCE: Campbell AP et al. Pediatrics. 2020. doi: 10.1542/peds.2020-1368.

Unlike previous studies focused on vaccine effectiveness (VE) in ambulatory care office visits, Angela P. Campbell, MD, MPH, and associates have uncovered evidence of the overall benefit influenza vaccines play in reducing hospitalizations and emergency department visits in pediatric influenza patients.

Yarinca/istockphoto

“Our data provide important VE estimates against severe influenza in children,” the researchers noted in Pediatrics, adding that the findings “provide important evidence supporting the annual recommendation that all children 6 months and older should receive influenza vaccination.”

Dr. Campbell and colleagues collected ongoing surveillance data from the New Vaccine Surveillance Network (NVSN), which is a network of pediatric hospitals across seven cities, including Kansas City, Mo.; Rochester, N.Y.; Cincinnati; Pittsburgh; Nashville, Tenn.; Houston; and Seattle. The influenza season encompassed the period Nov. 7, 2018 to June 21, 2019.

A total of 2,748 hospitalized children and 2,676 children who had completed ED visits that did not lead to hospitalization were included. Once those under 6 months were excluded, 1,792 hospitalized children were included in the VE analysis; of these, 226 (13%) tested positive for influenza infection, including 211 (93%) with influenza A viruses and 15 (7%) with influenza B viruses. Fully 1,611 of the patients (90%), had verified vaccine status, while 181 (10%) had solely parental reported vaccine status. The researchers reported 88 (5%) of the patients received mechanical ventilation and 7 (<1%) died.

Most noteworthy, the researchers observed a significant reduction in laboratory-confirmed hospitalizations by 41% in children vaccinated against the flu. They further estimated a significant reduction in hospitalizations linked to A(H3N2) and A(H1N1)pdm09 viruses, even in the presence of circulating A(H3N2) viruses that differed from the A(H3N2) vaccine component.

Studies from other countries during the same time period showed that while “significant protection against influenza-associated ambulatory care visits and hospitalizations among children infected with A(H1N1)pdm09 viruses” was observed, the same could not be said for protection against A(H3N2) viruses, which varied among pediatric outpatients in the United States (24%), in England (17% outpatient; 31% inpatient), Europe (46%), and Canada (48%). They explained that such variation in vaccine protection is multifactorial, and includes virus-, host-, and environment-related factors. They also noted that regional variations in circulating viruses, host factors including age, imprinting, and previous vaccination could explain the study’s finding of vaccine protection against both A(H1N1)pdm09 and A(H3N2) viruses.

When comparing VE estimates between ED visits and hospitalizations, the researchers observed one significant difference, that “hospitalized children likely represent more medically complex patients, with 58% having underlying medical conditions and 38% reporting at lease one hospitalization in the past year, compared with 28% and 14% respectively, among ED participants.”

Strengths of the study included the prospective multisite enrollment that provided data across diverse locations and representation from pediatric hospitalizations and ED care, which were not previously strongly represented in the literature. The single-season study with small sample size was considered a limitation, as was the inability to evaluate full and partial vaccine status. Vaccine data also were limited for many of the ED patients observed.

Dr. Campbell and colleagues did caution that while they consider their test-negative design optimal for evaluating both hospitalized and ED patients, they feel their results should not be “interpreted as VE against influenza-associated ambulatory care visits or infections that are not medically attended.”

In a separate interview, Michael E. Pichichero, MD, director of the Rochester General Hospital Research Institute and a clinical professor of pediatrics at the University of Rochester (N.Y.), observed: “There are really no surprises here. A well done contemporary study confirms again the benefits of annual influenza vaccinations for children. Viral coinfections involving SARS-CoV-2 and influenza have been reported from Australia to cause heightened illnesses. That observation provides further impetus for parents to have their children receive influenza vaccinations.”

The researchers cited multiple sources of financial support for their ongoing work, including Sanofi, Quidel, Moderna, Karius, GlaxoSmithKline, Merck, AstraZeneca, and Pfizer. Funding for this study was supported by the Centers for Disease Control and Prevention. Dr. Pichichero said he had no relevant financial disclosures.

SOURCE: Campbell AP et al. Pediatrics. 2020. doi: 10.1542/peds.2020-1368.

Unlike previous studies focused on vaccine effectiveness (VE) in ambulatory care office visits, Angela P. Campbell, MD, MPH, and associates have uncovered evidence of the overall benefit influenza vaccines play in reducing hospitalizations and emergency department visits in pediatric influenza patients.

Yarinca/istockphoto

“Our data provide important VE estimates against severe influenza in children,” the researchers noted in Pediatrics, adding that the findings “provide important evidence supporting the annual recommendation that all children 6 months and older should receive influenza vaccination.”

Dr. Campbell and colleagues collected ongoing surveillance data from the New Vaccine Surveillance Network (NVSN), which is a network of pediatric hospitals across seven cities, including Kansas City, Mo.; Rochester, N.Y.; Cincinnati; Pittsburgh; Nashville, Tenn.; Houston; and Seattle. The influenza season encompassed the period Nov. 7, 2018 to June 21, 2019.

A total of 2,748 hospitalized children and 2,676 children who had completed ED visits that did not lead to hospitalization were included. Once those under 6 months were excluded, 1,792 hospitalized children were included in the VE analysis; of these, 226 (13%) tested positive for influenza infection, including 211 (93%) with influenza A viruses and 15 (7%) with influenza B viruses. Fully 1,611 of the patients (90%), had verified vaccine status, while 181 (10%) had solely parental reported vaccine status. The researchers reported 88 (5%) of the patients received mechanical ventilation and 7 (<1%) died.

Most noteworthy, the researchers observed a significant reduction in laboratory-confirmed hospitalizations by 41% in children vaccinated against the flu. They further estimated a significant reduction in hospitalizations linked to A(H3N2) and A(H1N1)pdm09 viruses, even in the presence of circulating A(H3N2) viruses that differed from the A(H3N2) vaccine component.

Studies from other countries during the same time period showed that while “significant protection against influenza-associated ambulatory care visits and hospitalizations among children infected with A(H1N1)pdm09 viruses” was observed, the same could not be said for protection against A(H3N2) viruses, which varied among pediatric outpatients in the United States (24%), in England (17% outpatient; 31% inpatient), Europe (46%), and Canada (48%). They explained that such variation in vaccine protection is multifactorial, and includes virus-, host-, and environment-related factors. They also noted that regional variations in circulating viruses, host factors including age, imprinting, and previous vaccination could explain the study’s finding of vaccine protection against both A(H1N1)pdm09 and A(H3N2) viruses.

When comparing VE estimates between ED visits and hospitalizations, the researchers observed one significant difference, that “hospitalized children likely represent more medically complex patients, with 58% having underlying medical conditions and 38% reporting at lease one hospitalization in the past year, compared with 28% and 14% respectively, among ED participants.”

Strengths of the study included the prospective multisite enrollment that provided data across diverse locations and representation from pediatric hospitalizations and ED care, which were not previously strongly represented in the literature. The single-season study with small sample size was considered a limitation, as was the inability to evaluate full and partial vaccine status. Vaccine data also were limited for many of the ED patients observed.

Dr. Campbell and colleagues did caution that while they consider their test-negative design optimal for evaluating both hospitalized and ED patients, they feel their results should not be “interpreted as VE against influenza-associated ambulatory care visits or infections that are not medically attended.”

In a separate interview, Michael E. Pichichero, MD, director of the Rochester General Hospital Research Institute and a clinical professor of pediatrics at the University of Rochester (N.Y.), observed: “There are really no surprises here. A well done contemporary study confirms again the benefits of annual influenza vaccinations for children. Viral coinfections involving SARS-CoV-2 and influenza have been reported from Australia to cause heightened illnesses. That observation provides further impetus for parents to have their children receive influenza vaccinations.”

The researchers cited multiple sources of financial support for their ongoing work, including Sanofi, Quidel, Moderna, Karius, GlaxoSmithKline, Merck, AstraZeneca, and Pfizer. Funding for this study was supported by the Centers for Disease Control and Prevention. Dr. Pichichero said he had no relevant financial disclosures.

SOURCE: Campbell AP et al. Pediatrics. 2020. doi: 10.1542/peds.2020-1368.

More than 225,000 excess deaths occurred in the United States from March to July 2020, compared with historic norms, with approximately two-thirds directly attributable to COVID-19. However, additional deaths could be indirectly related because people avoided emergency care during the pandemic, new research shows.

Deaths linked to COVID-19 varied by state and phase of the pandemic, as reported in a study from researchers at Virginia Commonwealth University and Yale University that was published online October 12 in JAMA.

Another study published online simultaneously in JAMA took more of an international perspective. Investigators from the University of Pennsylvania and Harvard University found that in America there were more excess deaths and there was higher all-cause mortality during the pandemic than in 18 other countries.

Although the ongoing number of deaths attributable to COVID-19 continues to garner attention, there can be a lag of weeks or months in how long it takes some public health agencies to update their figures.

“For the public at large, the take-home message is twofold: that the number of deaths caused by the pandemic exceeds publicly reported COVID-19 death counts by 20% and that states that reopened or lifted restrictions early suffered a protracted surge in excess deaths that extended into the summer,” lead author of the US-focused study, Steven H. Woolf, MD, MPH, told Medscape Medical News.

The take-away for physicians is in the bigger picture – it is likely that the COVID-19 pandemic is responsible for deaths from other conditions as well. “Surges in COVID-19 were accompanied by an increase in deaths attributed to other causes, such as heart disease and Alzheimer’s disease and dementia,” said Woolf, director emeritus and senior adviser at the Center on Society and Health and professor in the Department of Family Medicine and Population Health at the Virginia Commonwealth University School of Medicine in Richmond, Virginia.

The investigators identified 225,530 excess US deaths in the 5 months from March to July. They report that 67% were directly attributable to COVID-19.

Deaths linked to COVID-19 included those in which the disease was listed as an underlying or contributing cause. US total death rates are “remarkably consistent” year after year, and the investigators calculated a 20% overall jump in mortality.

The study included data from the National Center for Health Statistics and the US Census Bureau for 48 states and the District of Columbia. Connecticut and North Carolina were excluded because of missing data.

Woolf and colleagues also found statistically higher rates of deaths from two other causes, heart disease and Alzheimer’s disease/dementia.
 

Altered states

New York, New Jersey, Massachusetts, Louisiana, Arizona, Mississippi, Maryland, Delaware, Rhode Island, and Michigan had the highest per capita excess death rates. Three states experienced the shortest epidemics during the study period: New York, New Jersey, and Massachusetts.

Some lessons could be learned by looking at how individual states managed large numbers of people with COVID-19. “Although we suspected that states that reopened early might have put themselves at risk of a pandemic surge, the consistency with which that occurred and the devastating numbers of deaths they suffered was a surprise,” Woolf said.

“The goal of our study is not to look in the rearview mirror and lament what happened months ago but to learn the lesson going forward: Our country will be unable to take control of this pandemic without more robust efforts to control community spread,” Woolf said. “Our study found that states that did this well, such as New York and New Jersey, experienced large surges but bent the curve and were back to baseline in less than 10 weeks.

“If we could do this as a country, countless lives could be saved.”
 

A global perspective

The United States experienced high mortality linked to COVID-19, as well as high all-cause mortality, compared with 18 other countries, as reported in the study by University of Pennsylvania and Harvard University researchers.

The United States ranked third, with 72 deaths per 100,000 people, among countries with moderate or high mortality. Although perhaps not surprising given the state of SARS-CoV-2 infection across the United States, a question remains as to what extent the relatively high mortality rate is linked to early outbreaks vs “poor long-term response,” the researchers note.

Alyssa Bilinski, MSc, and lead author Ezekiel J. Emanuel, MD, PhD, chair of the Department of Medical Ethics and Health Policy at the University of Pennsylvania Perelman School of Medicine in Philadelphia, calculated the difference in COVID-19 deaths among countries through Sept. 19, 2020. On this date, the United States reported a total 198,589 COVID-19 deaths.

They calculated that, if the US death rates were similar to those in Australia, the United States would have experienced 187,661 fewer COVID-19 deaths. If similar to those of Canada, there would have been 117,622 fewer deaths in the United States.

The US death rate was lower than six other countries with high COVID-19 mortality in the early spring, including Belgium, Spain, and the United Kingdom. However, after May 10, the per capita mortality rate in the United States exceeded the others.

Between May 10 and Sept. 19, the death rate in Italy was 9.1 per 100,000, vs 36.9 per 100,000.

“After the first peak in early spring, US death rates from COVID-19 and from all causes remained higher than even countries with high COVID-19 mortality,” the researchers note. “This may have been a result of several factors, including weak public health infrastructure and a decentralized, inconsistent US response to the pandemic.”
 

“Mortifying and motivating”

Woolf and colleagues estimate that more than 225,000 excess deaths occurred in recent months; this represents a 20% increase over expected deaths, note Harvey V. Fineberg, MD, PhD, of the Gordon and Betty Moore Foundation, in an accompanying editorial in JAMA.

“Importantly, a condition such as COVID-19 can contribute both directly and indirectly to excess mortality,” he writes.

Although the direct contribution to the mortality rates by those infected is straightforward, “the indirect contribution may relate to circumstances or choices due to the COVID-19 pandemic: for example, a patient who develops symptoms of a stroke is too concerned about COVID-19 to go to the emergency department, and a potentially reversible condition becomes fatal.”

Fineberg notes that “a general indication of the death toll from COVID-19 and the excess deaths related to the pandemic, as presented by Woolf et al, are sufficiently mortifying and motivating.”
 

“Profound human toll”

“The importance of the estimate by Woolf et al – which suggests that for the entirety of 2020, more than 400,000 excess deaths will occur – cannot be overstated, because it accounts for what could be declines in some causes of death, like motor vehicle crashes, but increases in others, like myocardial infarction,” write Howard Bauchner, MD, editor in chief of JAMA, and Phil B. Fontanarosa, MD, MBA, executive editor of JAMA, in another accompanying editorial.

“These deaths reflect a true measure of the human cost of the Great Pandemic of 2020,” they add.

The study from Emanuel and Bilinski was notable for calculating the excess COVID-19 and all-cause mortality to Sept. 2020, they note. “After the initial peak in early spring, US death rates from COVID-19 and from all causes remained higher than rates in countries with high COVID-19 mortality.”

“Few people will forget the Great Pandemic of 2020, where and how they lived, how it substantially changed their lives, and for many, the profound human toll it has taken,” Bauchner and Fontanarosa write.

The study by Woolf and colleagues was supported by National Center for Advancing Translational Sciences, the National Institute on Aging, and the National Institute of Allergy and Infectious Diseases. The study by Bilinski and Emanuel was partially funded by the Colton Foundation. Woolf, Emanuel, Fineberg, Bauchner, and Fontanarosa have disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

More than 225,000 excess deaths occurred in the United States from March to July 2020, compared with historic norms, with approximately two-thirds directly attributable to COVID-19. However, additional deaths could be indirectly related because people avoided emergency care during the pandemic, new research shows.

Deaths linked to COVID-19 varied by state and phase of the pandemic, as reported in a study from researchers at Virginia Commonwealth University and Yale University that was published online October 12 in JAMA.

Another study published online simultaneously in JAMA took more of an international perspective. Investigators from the University of Pennsylvania and Harvard University found that in America there were more excess deaths and there was higher all-cause mortality during the pandemic than in 18 other countries.

Although the ongoing number of deaths attributable to COVID-19 continues to garner attention, there can be a lag of weeks or months in how long it takes some public health agencies to update their figures.

“For the public at large, the take-home message is twofold: that the number of deaths caused by the pandemic exceeds publicly reported COVID-19 death counts by 20% and that states that reopened or lifted restrictions early suffered a protracted surge in excess deaths that extended into the summer,” lead author of the US-focused study, Steven H. Woolf, MD, MPH, told Medscape Medical News.

The take-away for physicians is in the bigger picture – it is likely that the COVID-19 pandemic is responsible for deaths from other conditions as well. “Surges in COVID-19 were accompanied by an increase in deaths attributed to other causes, such as heart disease and Alzheimer’s disease and dementia,” said Woolf, director emeritus and senior adviser at the Center on Society and Health and professor in the Department of Family Medicine and Population Health at the Virginia Commonwealth University School of Medicine in Richmond, Virginia.

The investigators identified 225,530 excess US deaths in the 5 months from March to July. They report that 67% were directly attributable to COVID-19.

Deaths linked to COVID-19 included those in which the disease was listed as an underlying or contributing cause. US total death rates are “remarkably consistent” year after year, and the investigators calculated a 20% overall jump in mortality.

The study included data from the National Center for Health Statistics and the US Census Bureau for 48 states and the District of Columbia. Connecticut and North Carolina were excluded because of missing data.

Woolf and colleagues also found statistically higher rates of deaths from two other causes, heart disease and Alzheimer’s disease/dementia.
 

Altered states

New York, New Jersey, Massachusetts, Louisiana, Arizona, Mississippi, Maryland, Delaware, Rhode Island, and Michigan had the highest per capita excess death rates. Three states experienced the shortest epidemics during the study period: New York, New Jersey, and Massachusetts.

Some lessons could be learned by looking at how individual states managed large numbers of people with COVID-19. “Although we suspected that states that reopened early might have put themselves at risk of a pandemic surge, the consistency with which that occurred and the devastating numbers of deaths they suffered was a surprise,” Woolf said.

“The goal of our study is not to look in the rearview mirror and lament what happened months ago but to learn the lesson going forward: Our country will be unable to take control of this pandemic without more robust efforts to control community spread,” Woolf said. “Our study found that states that did this well, such as New York and New Jersey, experienced large surges but bent the curve and were back to baseline in less than 10 weeks.

“If we could do this as a country, countless lives could be saved.”
 

A global perspective

The United States experienced high mortality linked to COVID-19, as well as high all-cause mortality, compared with 18 other countries, as reported in the study by University of Pennsylvania and Harvard University researchers.

The United States ranked third, with 72 deaths per 100,000 people, among countries with moderate or high mortality. Although perhaps not surprising given the state of SARS-CoV-2 infection across the United States, a question remains as to what extent the relatively high mortality rate is linked to early outbreaks vs “poor long-term response,” the researchers note.

Alyssa Bilinski, MSc, and lead author Ezekiel J. Emanuel, MD, PhD, chair of the Department of Medical Ethics and Health Policy at the University of Pennsylvania Perelman School of Medicine in Philadelphia, calculated the difference in COVID-19 deaths among countries through Sept. 19, 2020. On this date, the United States reported a total 198,589 COVID-19 deaths.

They calculated that, if the US death rates were similar to those in Australia, the United States would have experienced 187,661 fewer COVID-19 deaths. If similar to those of Canada, there would have been 117,622 fewer deaths in the United States.

The US death rate was lower than six other countries with high COVID-19 mortality in the early spring, including Belgium, Spain, and the United Kingdom. However, after May 10, the per capita mortality rate in the United States exceeded the others.

Between May 10 and Sept. 19, the death rate in Italy was 9.1 per 100,000, vs 36.9 per 100,000.

“After the first peak in early spring, US death rates from COVID-19 and from all causes remained higher than even countries with high COVID-19 mortality,” the researchers note. “This may have been a result of several factors, including weak public health infrastructure and a decentralized, inconsistent US response to the pandemic.”
 

“Mortifying and motivating”

Woolf and colleagues estimate that more than 225,000 excess deaths occurred in recent months; this represents a 20% increase over expected deaths, note Harvey V. Fineberg, MD, PhD, of the Gordon and Betty Moore Foundation, in an accompanying editorial in JAMA.

“Importantly, a condition such as COVID-19 can contribute both directly and indirectly to excess mortality,” he writes.

Although the direct contribution to the mortality rates by those infected is straightforward, “the indirect contribution may relate to circumstances or choices due to the COVID-19 pandemic: for example, a patient who develops symptoms of a stroke is too concerned about COVID-19 to go to the emergency department, and a potentially reversible condition becomes fatal.”

Fineberg notes that “a general indication of the death toll from COVID-19 and the excess deaths related to the pandemic, as presented by Woolf et al, are sufficiently mortifying and motivating.”
 

“Profound human toll”

“The importance of the estimate by Woolf et al – which suggests that for the entirety of 2020, more than 400,000 excess deaths will occur – cannot be overstated, because it accounts for what could be declines in some causes of death, like motor vehicle crashes, but increases in others, like myocardial infarction,” write Howard Bauchner, MD, editor in chief of JAMA, and Phil B. Fontanarosa, MD, MBA, executive editor of JAMA, in another accompanying editorial.

“These deaths reflect a true measure of the human cost of the Great Pandemic of 2020,” they add.

The study from Emanuel and Bilinski was notable for calculating the excess COVID-19 and all-cause mortality to Sept. 2020, they note. “After the initial peak in early spring, US death rates from COVID-19 and from all causes remained higher than rates in countries with high COVID-19 mortality.”

“Few people will forget the Great Pandemic of 2020, where and how they lived, how it substantially changed their lives, and for many, the profound human toll it has taken,” Bauchner and Fontanarosa write.

The study by Woolf and colleagues was supported by National Center for Advancing Translational Sciences, the National Institute on Aging, and the National Institute of Allergy and Infectious Diseases. The study by Bilinski and Emanuel was partially funded by the Colton Foundation. Woolf, Emanuel, Fineberg, Bauchner, and Fontanarosa have disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

More than 225,000 excess deaths occurred in the United States from March to July 2020, compared with historic norms, with approximately two-thirds directly attributable to COVID-19. However, additional deaths could be indirectly related because people avoided emergency care during the pandemic, new research shows.

Deaths linked to COVID-19 varied by state and phase of the pandemic, as reported in a study from researchers at Virginia Commonwealth University and Yale University that was published online October 12 in JAMA.

Another study published online simultaneously in JAMA took more of an international perspective. Investigators from the University of Pennsylvania and Harvard University found that in America there were more excess deaths and there was higher all-cause mortality during the pandemic than in 18 other countries.

Although the ongoing number of deaths attributable to COVID-19 continues to garner attention, there can be a lag of weeks or months in how long it takes some public health agencies to update their figures.

“For the public at large, the take-home message is twofold: that the number of deaths caused by the pandemic exceeds publicly reported COVID-19 death counts by 20% and that states that reopened or lifted restrictions early suffered a protracted surge in excess deaths that extended into the summer,” lead author of the US-focused study, Steven H. Woolf, MD, MPH, told Medscape Medical News.

The take-away for physicians is in the bigger picture – it is likely that the COVID-19 pandemic is responsible for deaths from other conditions as well. “Surges in COVID-19 were accompanied by an increase in deaths attributed to other causes, such as heart disease and Alzheimer’s disease and dementia,” said Woolf, director emeritus and senior adviser at the Center on Society and Health and professor in the Department of Family Medicine and Population Health at the Virginia Commonwealth University School of Medicine in Richmond, Virginia.

The investigators identified 225,530 excess US deaths in the 5 months from March to July. They report that 67% were directly attributable to COVID-19.

Deaths linked to COVID-19 included those in which the disease was listed as an underlying or contributing cause. US total death rates are “remarkably consistent” year after year, and the investigators calculated a 20% overall jump in mortality.

The study included data from the National Center for Health Statistics and the US Census Bureau for 48 states and the District of Columbia. Connecticut and North Carolina were excluded because of missing data.

Woolf and colleagues also found statistically higher rates of deaths from two other causes, heart disease and Alzheimer’s disease/dementia.
 

Altered states

New York, New Jersey, Massachusetts, Louisiana, Arizona, Mississippi, Maryland, Delaware, Rhode Island, and Michigan had the highest per capita excess death rates. Three states experienced the shortest epidemics during the study period: New York, New Jersey, and Massachusetts.

Some lessons could be learned by looking at how individual states managed large numbers of people with COVID-19. “Although we suspected that states that reopened early might have put themselves at risk of a pandemic surge, the consistency with which that occurred and the devastating numbers of deaths they suffered was a surprise,” Woolf said.

“The goal of our study is not to look in the rearview mirror and lament what happened months ago but to learn the lesson going forward: Our country will be unable to take control of this pandemic without more robust efforts to control community spread,” Woolf said. “Our study found that states that did this well, such as New York and New Jersey, experienced large surges but bent the curve and were back to baseline in less than 10 weeks.

“If we could do this as a country, countless lives could be saved.”
 

A global perspective

The United States experienced high mortality linked to COVID-19, as well as high all-cause mortality, compared with 18 other countries, as reported in the study by University of Pennsylvania and Harvard University researchers.

The United States ranked third, with 72 deaths per 100,000 people, among countries with moderate or high mortality. Although perhaps not surprising given the state of SARS-CoV-2 infection across the United States, a question remains as to what extent the relatively high mortality rate is linked to early outbreaks vs “poor long-term response,” the researchers note.

Alyssa Bilinski, MSc, and lead author Ezekiel J. Emanuel, MD, PhD, chair of the Department of Medical Ethics and Health Policy at the University of Pennsylvania Perelman School of Medicine in Philadelphia, calculated the difference in COVID-19 deaths among countries through Sept. 19, 2020. On this date, the United States reported a total 198,589 COVID-19 deaths.

They calculated that, if the US death rates were similar to those in Australia, the United States would have experienced 187,661 fewer COVID-19 deaths. If similar to those of Canada, there would have been 117,622 fewer deaths in the United States.

The US death rate was lower than six other countries with high COVID-19 mortality in the early spring, including Belgium, Spain, and the United Kingdom. However, after May 10, the per capita mortality rate in the United States exceeded the others.

Between May 10 and Sept. 19, the death rate in Italy was 9.1 per 100,000, vs 36.9 per 100,000.

“After the first peak in early spring, US death rates from COVID-19 and from all causes remained higher than even countries with high COVID-19 mortality,” the researchers note. “This may have been a result of several factors, including weak public health infrastructure and a decentralized, inconsistent US response to the pandemic.”
 

“Mortifying and motivating”

Woolf and colleagues estimate that more than 225,000 excess deaths occurred in recent months; this represents a 20% increase over expected deaths, note Harvey V. Fineberg, MD, PhD, of the Gordon and Betty Moore Foundation, in an accompanying editorial in JAMA.

“Importantly, a condition such as COVID-19 can contribute both directly and indirectly to excess mortality,” he writes.

Although the direct contribution to the mortality rates by those infected is straightforward, “the indirect contribution may relate to circumstances or choices due to the COVID-19 pandemic: for example, a patient who develops symptoms of a stroke is too concerned about COVID-19 to go to the emergency department, and a potentially reversible condition becomes fatal.”

Fineberg notes that “a general indication of the death toll from COVID-19 and the excess deaths related to the pandemic, as presented by Woolf et al, are sufficiently mortifying and motivating.”
 

“Profound human toll”

“The importance of the estimate by Woolf et al – which suggests that for the entirety of 2020, more than 400,000 excess deaths will occur – cannot be overstated, because it accounts for what could be declines in some causes of death, like motor vehicle crashes, but increases in others, like myocardial infarction,” write Howard Bauchner, MD, editor in chief of JAMA, and Phil B. Fontanarosa, MD, MBA, executive editor of JAMA, in another accompanying editorial.

“These deaths reflect a true measure of the human cost of the Great Pandemic of 2020,” they add.

The study from Emanuel and Bilinski was notable for calculating the excess COVID-19 and all-cause mortality to Sept. 2020, they note. “After the initial peak in early spring, US death rates from COVID-19 and from all causes remained higher than rates in countries with high COVID-19 mortality.”

“Few people will forget the Great Pandemic of 2020, where and how they lived, how it substantially changed their lives, and for many, the profound human toll it has taken,” Bauchner and Fontanarosa write.

The study by Woolf and colleagues was supported by National Center for Advancing Translational Sciences, the National Institute on Aging, and the National Institute of Allergy and Infectious Diseases. The study by Bilinski and Emanuel was partially funded by the Colton Foundation. Woolf, Emanuel, Fineberg, Bauchner, and Fontanarosa have disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

Human papillomavirus (HPV) is one of the most common sexually transmitted infections in the United States. It is the causative agent of genital warts, as well as cervical, anal, penile, vulvar, vaginal, and some head and neck cancers.¹ Development of the HPV vaccine and its introduction into the scheduled vaccine series recommended by the Centers for Disease Control and Prevention (CDC) represented a major public health milestone. The CDC recommends the HPV vaccine for all children beginning at 11 or 12 years of age, even as early as 9 years, regardless of gender identity or sexuality. As of late 2016, the 9-valent formulation (Gardasil 9 [Merck]) is the only HPV vaccine distributed in the United States, and the vaccination schedule depends specifically on age. The Advisory Committee on Immunization Practices (ACIP) of the CDC revised its recommendations in 2019 to include “shared clinical decision-making regarding HPV vaccination . . . for some adults aged 27 through 45 years.”² This change in policy has notable implications for sexual and gender minority populations, such as lesbian, gay, bisexual, transgender, and queer or questioning (LGBTQ) patients, especially in the context of dermatologic care. Herein, we discuss HPV-related conditions for LGBTQ patients, barriers to vaccine administration, and the role of dermatologists in promoting an increased vaccination rate in the LGBTQ community.

HPV-Related Conditions

A 2019 review of dermatologic care for LGBTQ patients identified many specific health disparities of HPV.³ Specifically, men who have sex with men (MSM) are more likely than heterosexual men to have oral, anal, and penile HPV infections, including high-risk HPV types.³ From 2011 to 2014, 18% and 13% of MSM had oral HPV infection and high-risk oral HPV infection, respectively, compared to only 11% and 7%, respectively, of men who reported never having had a same-sex sexual partner.⁴

Similarly, despite the CDC’s position that patients with perianal warts might benefit from digital anal examination or referral for standard or high-resolution anoscopy to detect intra-anal warts, improvements in morbidity have not yet been realized. In 2017, anal cancer incidence was 45.9 cases for every 100,000 person-years among human immunodeficiency (HIV)–positive MSM and 5.1 cases for every 100,000 person-years among HIV-negative MSM vs only 1.5 cases for every 100,000 person-years among men in the United States overall.³ Yet the CDC states that there is insufficient evidence to recommend routine anal cancer screening among MSM, even when a patient is HIV positive. Therefore, current screening practices and treatments are insufficient as MSM continue to have a disproportionately higher rate of HPV-associated disease compared to other populations.

Barriers to HPV Vaccine Administration

The HPV vaccination rate among MSM in adolescent populations varies across reports.^5-7 Interestingly, a 2016 survey study found that MSM had approximately 2-times greater odds of initiating the HPV vaccine than heterosexual men.⁸ However, a study specifically sampling young gay and bisexual men (N=428) found that only 13% had received any doses of the HPV vaccine.⁶

Regardless, HPV vaccination is much less common among all males than it is among all females, and the low rate of vaccination among sexual minority men has a disproportionate impact, given their higher risk for HPV infection.⁴ Although the HPV vaccination rate increased from 2014 to 2017, the HPV vaccination rate in MSM overall is less than half of the Healthy People 2020 goal of 80%.⁹ A 2018 review determined that HPV vaccination is a cost-effective strategy for preventing anal cancer in MSM¹⁰; yet male patients might still view the HPV vaccine as a “women’s issue” and are less likely to be vaccinated if they are not prompted by health care providers. Additionally, HPV vaccination is remarkably less likely in MSM when patients are older, uninsured, of lower socioeconomic status, or have not disclosed their sexual identity to their health care provider.⁹ Dermatologists should be mindful of these barriers to promote HPV vaccination in MSM before, or soon after, sexual debut.

Other members of the LGBTQ community, such as women who have sex with women, face notable HPV-related health disparities and would benefit from increased vaccination efforts by dermatologists. Adolescent and young adult women who have sex with women are less likely than heterosexual adolescent and young adult women to receive routine Papanicolaou tests and initiate HPV vaccination, despite having a higher number of lifetime sexual partners and a higher risk for HPV exposure.¹¹ A 2015 survey study (N=3253) found that after adjusting for covariates, only 8.5% of lesbians and 33.2% of bisexual women and girls who had heard of the HPV vaccine had initiated vaccination compared to 28.4% of their heterosexual counterparts.¹¹ The HPV vaccine is an effective public health tool for the prevention of cervical cancer in these populations. A study of women aged 15 to 19 years in the HPV vaccination era (2007-2014) found significant (P<.05) observed population-level decreases in cervical intraepithelial neoplasia incidence across all grades.¹²

Transgender women also face a high rate of HPV infection, HIV infection, and other structural and financial disparities, such as low insurance coverage, that can limit their access to vaccination. Transgender men have a higher rate of HPV infection than cisgender men, and those with female internal reproductive organs are less likely to receive routine Papanicolaou tests. A 2018 survey study found that approximately one-third of transgender men and women reported initiating the HPV vaccination series,¹³ but further investigation is required to make balanced comparisons to cisgender patients.

The Role of the Dermatologist

Collectively, these disparities emphasize the need for increased involvement by dermatologists in HPV vaccination efforts for all LGBTQ patients. Adult patients may have concerns about ties of the HPV vaccine to drug manufacturers and the general safety of vaccination. For pediatric patients, parents/guardians also may be concerned about an assumed but not evidence-based increase in sexual promiscuity following HPV vaccination.¹⁴ These topics can be challenging to discuss, but dermatologists have the duty to be proactive and initiate conversation about HPV vaccination, as opposed to waiting for patients to express interest. Dermatologists should stress the safety of the vaccine as well as its potential to protect against multiple, even life-threatening diseases. Providers also can explain that the ACIP recommends catch-up vaccination for all individuals through 26 years of age, regardless of sexual orientation or gender identity.

With the ACIP having recently expanded the appropriate age range for HPV vaccination, we encourage dermatologists to engage in education and shared decision-making to ensure that adult patients with specific risk factors receive the HPV vaccine. Because the expanded ACIP recommendations are aimed at vaccination before HPV exposure, vaccination might not be appropriate for all LGBTQ patients. However, eliciting a sexual history with routine patient intake forms or during the clinical encounter ensures equal access to the HPV vaccine.

Greater awareness of HPV-related disparities and barriers to vaccination in LGBTQ populations has the potential to notably decrease HPV-associated mortality and morbidity. Increased involvement by dermatologists contributes to the efforts of other specialties in universal HPV vaccination, regardless of sexual orientation or gender identity—ideally in younger age groups, such that patients receive the vaccine prior to coitarche.

There are many ways that dermatologists can advocate for HPV vaccination. Those in a multispecialty or academic practice can readily refer patients to an associated internist, primary care physician, or vaccination clinic in the same building or institution. Dermatologists in private practice might be able to administer the HPV vaccine themselves or can advocate for patients to receive the vaccine at a local facility of the Department of Health or at a nonprofit organization, such as a Planned Parenthood center. Although pediatricians and family physicians remain front-line providers of these services, dermatologists represent an additional member of a patient’s care team, capable of advocating for this important intervention.

Human papillomavirus (HPV) is one of the most common sexually transmitted infections in the United States. It is the causative agent of genital warts, as well as cervical, anal, penile, vulvar, vaginal, and some head and neck cancers.¹ Development of the HPV vaccine and its introduction into the scheduled vaccine series recommended by the Centers for Disease Control and Prevention (CDC) represented a major public health milestone. The CDC recommends the HPV vaccine for all children beginning at 11 or 12 years of age, even as early as 9 years, regardless of gender identity or sexuality. As of late 2016, the 9-valent formulation (Gardasil 9 [Merck]) is the only HPV vaccine distributed in the United States, and the vaccination schedule depends specifically on age. The Advisory Committee on Immunization Practices (ACIP) of the CDC revised its recommendations in 2019 to include “shared clinical decision-making regarding HPV vaccination . . . for some adults aged 27 through 45 years.”² This change in policy has notable implications for sexual and gender minority populations, such as lesbian, gay, bisexual, transgender, and queer or questioning (LGBTQ) patients, especially in the context of dermatologic care. Herein, we discuss HPV-related conditions for LGBTQ patients, barriers to vaccine administration, and the role of dermatologists in promoting an increased vaccination rate in the LGBTQ community.

HPV-Related Conditions

A 2019 review of dermatologic care for LGBTQ patients identified many specific health disparities of HPV.³ Specifically, men who have sex with men (MSM) are more likely than heterosexual men to have oral, anal, and penile HPV infections, including high-risk HPV types.³ From 2011 to 2014, 18% and 13% of MSM had oral HPV infection and high-risk oral HPV infection, respectively, compared to only 11% and 7%, respectively, of men who reported never having had a same-sex sexual partner.⁴

Similarly, despite the CDC’s position that patients with perianal warts might benefit from digital anal examination or referral for standard or high-resolution anoscopy to detect intra-anal warts, improvements in morbidity have not yet been realized. In 2017, anal cancer incidence was 45.9 cases for every 100,000 person-years among human immunodeficiency (HIV)–positive MSM and 5.1 cases for every 100,000 person-years among HIV-negative MSM vs only 1.5 cases for every 100,000 person-years among men in the United States overall.³ Yet the CDC states that there is insufficient evidence to recommend routine anal cancer screening among MSM, even when a patient is HIV positive. Therefore, current screening practices and treatments are insufficient as MSM continue to have a disproportionately higher rate of HPV-associated disease compared to other populations.

Barriers to HPV Vaccine Administration

The HPV vaccination rate among MSM in adolescent populations varies across reports.^5-7 Interestingly, a 2016 survey study found that MSM had approximately 2-times greater odds of initiating the HPV vaccine than heterosexual men.⁸ However, a study specifically sampling young gay and bisexual men (N=428) found that only 13% had received any doses of the HPV vaccine.⁶

Regardless, HPV vaccination is much less common among all males than it is among all females, and the low rate of vaccination among sexual minority men has a disproportionate impact, given their higher risk for HPV infection.⁴ Although the HPV vaccination rate increased from 2014 to 2017, the HPV vaccination rate in MSM overall is less than half of the Healthy People 2020 goal of 80%.⁹ A 2018 review determined that HPV vaccination is a cost-effective strategy for preventing anal cancer in MSM¹⁰; yet male patients might still view the HPV vaccine as a “women’s issue” and are less likely to be vaccinated if they are not prompted by health care providers. Additionally, HPV vaccination is remarkably less likely in MSM when patients are older, uninsured, of lower socioeconomic status, or have not disclosed their sexual identity to their health care provider.⁹ Dermatologists should be mindful of these barriers to promote HPV vaccination in MSM before, or soon after, sexual debut.

Other members of the LGBTQ community, such as women who have sex with women, face notable HPV-related health disparities and would benefit from increased vaccination efforts by dermatologists. Adolescent and young adult women who have sex with women are less likely than heterosexual adolescent and young adult women to receive routine Papanicolaou tests and initiate HPV vaccination, despite having a higher number of lifetime sexual partners and a higher risk for HPV exposure.¹¹ A 2015 survey study (N=3253) found that after adjusting for covariates, only 8.5% of lesbians and 33.2% of bisexual women and girls who had heard of the HPV vaccine had initiated vaccination compared to 28.4% of their heterosexual counterparts.¹¹ The HPV vaccine is an effective public health tool for the prevention of cervical cancer in these populations. A study of women aged 15 to 19 years in the HPV vaccination era (2007-2014) found significant (P<.05) observed population-level decreases in cervical intraepithelial neoplasia incidence across all grades.¹²

Transgender women also face a high rate of HPV infection, HIV infection, and other structural and financial disparities, such as low insurance coverage, that can limit their access to vaccination. Transgender men have a higher rate of HPV infection than cisgender men, and those with female internal reproductive organs are less likely to receive routine Papanicolaou tests. A 2018 survey study found that approximately one-third of transgender men and women reported initiating the HPV vaccination series,¹³ but further investigation is required to make balanced comparisons to cisgender patients.

The Role of the Dermatologist

Collectively, these disparities emphasize the need for increased involvement by dermatologists in HPV vaccination efforts for all LGBTQ patients. Adult patients may have concerns about ties of the HPV vaccine to drug manufacturers and the general safety of vaccination. For pediatric patients, parents/guardians also may be concerned about an assumed but not evidence-based increase in sexual promiscuity following HPV vaccination.¹⁴ These topics can be challenging to discuss, but dermatologists have the duty to be proactive and initiate conversation about HPV vaccination, as opposed to waiting for patients to express interest. Dermatologists should stress the safety of the vaccine as well as its potential to protect against multiple, even life-threatening diseases. Providers also can explain that the ACIP recommends catch-up vaccination for all individuals through 26 years of age, regardless of sexual orientation or gender identity.

With the ACIP having recently expanded the appropriate age range for HPV vaccination, we encourage dermatologists to engage in education and shared decision-making to ensure that adult patients with specific risk factors receive the HPV vaccine. Because the expanded ACIP recommendations are aimed at vaccination before HPV exposure, vaccination might not be appropriate for all LGBTQ patients. However, eliciting a sexual history with routine patient intake forms or during the clinical encounter ensures equal access to the HPV vaccine.

Greater awareness of HPV-related disparities and barriers to vaccination in LGBTQ populations has the potential to notably decrease HPV-associated mortality and morbidity. Increased involvement by dermatologists contributes to the efforts of other specialties in universal HPV vaccination, regardless of sexual orientation or gender identity—ideally in younger age groups, such that patients receive the vaccine prior to coitarche.

There are many ways that dermatologists can advocate for HPV vaccination. Those in a multispecialty or academic practice can readily refer patients to an associated internist, primary care physician, or vaccination clinic in the same building or institution. Dermatologists in private practice might be able to administer the HPV vaccine themselves or can advocate for patients to receive the vaccine at a local facility of the Department of Health or at a nonprofit organization, such as a Planned Parenthood center. Although pediatricians and family physicians remain front-line providers of these services, dermatologists represent an additional member of a patient’s care team, capable of advocating for this important intervention.

Human papillomavirus (HPV) is one of the most common sexually transmitted infections in the United States. It is the causative agent of genital warts, as well as cervical, anal, penile, vulvar, vaginal, and some head and neck cancers.¹ Development of the HPV vaccine and its introduction into the scheduled vaccine series recommended by the Centers for Disease Control and Prevention (CDC) represented a major public health milestone. The CDC recommends the HPV vaccine for all children beginning at 11 or 12 years of age, even as early as 9 years, regardless of gender identity or sexuality. As of late 2016, the 9-valent formulation (Gardasil 9 [Merck]) is the only HPV vaccine distributed in the United States, and the vaccination schedule depends specifically on age. The Advisory Committee on Immunization Practices (ACIP) of the CDC revised its recommendations in 2019 to include “shared clinical decision-making regarding HPV vaccination . . . for some adults aged 27 through 45 years.”² This change in policy has notable implications for sexual and gender minority populations, such as lesbian, gay, bisexual, transgender, and queer or questioning (LGBTQ) patients, especially in the context of dermatologic care. Herein, we discuss HPV-related conditions for LGBTQ patients, barriers to vaccine administration, and the role of dermatologists in promoting an increased vaccination rate in the LGBTQ community.

HPV-Related Conditions

A 2019 review of dermatologic care for LGBTQ patients identified many specific health disparities of HPV.³ Specifically, men who have sex with men (MSM) are more likely than heterosexual men to have oral, anal, and penile HPV infections, including high-risk HPV types.³ From 2011 to 2014, 18% and 13% of MSM had oral HPV infection and high-risk oral HPV infection, respectively, compared to only 11% and 7%, respectively, of men who reported never having had a same-sex sexual partner.⁴

Similarly, despite the CDC’s position that patients with perianal warts might benefit from digital anal examination or referral for standard or high-resolution anoscopy to detect intra-anal warts, improvements in morbidity have not yet been realized. In 2017, anal cancer incidence was 45.9 cases for every 100,000 person-years among human immunodeficiency (HIV)–positive MSM and 5.1 cases for every 100,000 person-years among HIV-negative MSM vs only 1.5 cases for every 100,000 person-years among men in the United States overall.³ Yet the CDC states that there is insufficient evidence to recommend routine anal cancer screening among MSM, even when a patient is HIV positive. Therefore, current screening practices and treatments are insufficient as MSM continue to have a disproportionately higher rate of HPV-associated disease compared to other populations.

Barriers to HPV Vaccine Administration

The HPV vaccination rate among MSM in adolescent populations varies across reports.^5-7 Interestingly, a 2016 survey study found that MSM had approximately 2-times greater odds of initiating the HPV vaccine than heterosexual men.⁸ However, a study specifically sampling young gay and bisexual men (N=428) found that only 13% had received any doses of the HPV vaccine.⁶

Regardless, HPV vaccination is much less common among all males than it is among all females, and the low rate of vaccination among sexual minority men has a disproportionate impact, given their higher risk for HPV infection.⁴ Although the HPV vaccination rate increased from 2014 to 2017, the HPV vaccination rate in MSM overall is less than half of the Healthy People 2020 goal of 80%.⁹ A 2018 review determined that HPV vaccination is a cost-effective strategy for preventing anal cancer in MSM¹⁰; yet male patients might still view the HPV vaccine as a “women’s issue” and are less likely to be vaccinated if they are not prompted by health care providers. Additionally, HPV vaccination is remarkably less likely in MSM when patients are older, uninsured, of lower socioeconomic status, or have not disclosed their sexual identity to their health care provider.⁹ Dermatologists should be mindful of these barriers to promote HPV vaccination in MSM before, or soon after, sexual debut.

Other members of the LGBTQ community, such as women who have sex with women, face notable HPV-related health disparities and would benefit from increased vaccination efforts by dermatologists. Adolescent and young adult women who have sex with women are less likely than heterosexual adolescent and young adult women to receive routine Papanicolaou tests and initiate HPV vaccination, despite having a higher number of lifetime sexual partners and a higher risk for HPV exposure.¹¹ A 2015 survey study (N=3253) found that after adjusting for covariates, only 8.5% of lesbians and 33.2% of bisexual women and girls who had heard of the HPV vaccine had initiated vaccination compared to 28.4% of their heterosexual counterparts.¹¹ The HPV vaccine is an effective public health tool for the prevention of cervical cancer in these populations. A study of women aged 15 to 19 years in the HPV vaccination era (2007-2014) found significant (P<.05) observed population-level decreases in cervical intraepithelial neoplasia incidence across all grades.¹²

Transgender women also face a high rate of HPV infection, HIV infection, and other structural and financial disparities, such as low insurance coverage, that can limit their access to vaccination. Transgender men have a higher rate of HPV infection than cisgender men, and those with female internal reproductive organs are less likely to receive routine Papanicolaou tests. A 2018 survey study found that approximately one-third of transgender men and women reported initiating the HPV vaccination series,¹³ but further investigation is required to make balanced comparisons to cisgender patients.

The Role of the Dermatologist

Collectively, these disparities emphasize the need for increased involvement by dermatologists in HPV vaccination efforts for all LGBTQ patients. Adult patients may have concerns about ties of the HPV vaccine to drug manufacturers and the general safety of vaccination. For pediatric patients, parents/guardians also may be concerned about an assumed but not evidence-based increase in sexual promiscuity following HPV vaccination.¹⁴ These topics can be challenging to discuss, but dermatologists have the duty to be proactive and initiate conversation about HPV vaccination, as opposed to waiting for patients to express interest. Dermatologists should stress the safety of the vaccine as well as its potential to protect against multiple, even life-threatening diseases. Providers also can explain that the ACIP recommends catch-up vaccination for all individuals through 26 years of age, regardless of sexual orientation or gender identity.

With the ACIP having recently expanded the appropriate age range for HPV vaccination, we encourage dermatologists to engage in education and shared decision-making to ensure that adult patients with specific risk factors receive the HPV vaccine. Because the expanded ACIP recommendations are aimed at vaccination before HPV exposure, vaccination might not be appropriate for all LGBTQ patients. However, eliciting a sexual history with routine patient intake forms or during the clinical encounter ensures equal access to the HPV vaccine.

Greater awareness of HPV-related disparities and barriers to vaccination in LGBTQ populations has the potential to notably decrease HPV-associated mortality and morbidity. Increased involvement by dermatologists contributes to the efforts of other specialties in universal HPV vaccination, regardless of sexual orientation or gender identity—ideally in younger age groups, such that patients receive the vaccine prior to coitarche.

There are many ways that dermatologists can advocate for HPV vaccination. Those in a multispecialty or academic practice can readily refer patients to an associated internist, primary care physician, or vaccination clinic in the same building or institution. Dermatologists in private practice might be able to administer the HPV vaccine themselves or can advocate for patients to receive the vaccine at a local facility of the Department of Health or at a nonprofit organization, such as a Planned Parenthood center. Although pediatricians and family physicians remain front-line providers of these services, dermatologists represent an additional member of a patient’s care team, capable of advocating for this important intervention.

Case Report

A 50-year-old woman presented with a sore, tender, red lump on the right superior buttock of 5 months’ duration. Five months prior to presentation the patient used this area to attach the infusion set for an insulin pump, which was left in place for 7 days as opposed to the 2 or 3 days recommended by the device manufacturer. A firm, slightly tender lump formed, similar to prior scars that had developed from use of the insulin pump. However, the lump began to grow and get softer. It was intermittently warm and red. Although the area was sore and tender, she never had any major pain. She also denied any fever, malaise, or other systemic symptoms.

The patient indicated a medical history of type 1 diabetes mellitus diagnosed at 9 years of age; hypertension; asthma; gastroesophageal reflux disease; allergic rhinitis; migraine headaches; depression; hidradenitis suppurativa that resolved after surgical excision; and recurrent vaginal yeast infections, especially when taking antibiotics. She had a surgical history of hidradenitis suppurativa excision at the inguinal folds, bilateral carpal tunnel release, tubal ligation, abdominoplasty, and cholecystectomy. The patient’s current medications included insulin aspart, mometasone furoate, inhaled fluticasone, pantoprazole, cetirizine, spironolactone, duloxetine, sumatriptan, fluconazole, topiramate, and enalapril.

Physical examination revealed normal vital signs and the patient was afebrile. She had no swollen or tender lymph nodes. There was a 5.5×7.0-cm, soft, tender, erythematous subcutaneous mass with no visible punctum or overlying epidermal change on the right superior buttock (Figure 1). Based on the history and physical examination, the differential diagnosis included subcutaneous fat necrosis, epidermal inclusion cyst, and an abscess.

Comment

Achromobacter xylosoxidans is a nonfermentative, non–spore-forming, motile, gram-negative, aerobic, catalase-positive and oxidase-positive flagellate bacterium. It is an emerging pathogen that was first isolated in 1971 from patients with chronic otitis media.¹ Since its recognition, it has been documented to cause a variety of infections, including pneumonia, meningitis, osteomyelitis, endocarditis, and bacteremia, as well as abdominal, urinary tract, ocular, and skin and soft tissue infections.^2,3 Those affected usually are immunocompromised, have hematologic disorders, or have indwelling catheters.⁴ Strains of A xylosoxidans have shown resistance to multiple antibiotics including penicillins, cephalosporins, carbapenems, aminoglycosides, macrolides, fluoroquinolones, and TMP-SMX. Achromobacter xylosoxidans has been documented to form biofilms on plastics, including on contact lenses, urinary and intravenous catheters, and reusable tissue dispensers treated with disinfectant solution.^4-6 One study demonstrated that A xylosoxidans is even capable of biodegradation of plastic, using the plastic as its sole source of carbon.⁷

Our case illustrates an indolent infection with A xylosoxidans forming a granulomatous abscess at the site of an insulin pump that was left in place for 7 days in an immunocompetent patient. Although infections with A xylosoxidans in patients with urinary or intravenous catheters have been reported,⁴ our case is unique, as the insulin pump was the source of such an infection. It is possible that the subcutaneous focus of acellular material described on the pathology report represented a partially biodegraded piece of the insulin pump catheter that broke off and was serving as a nidus of infection for A xylosoxidans. Although multidrug resistance is common, the culture grown from our patient was susceptible to TMP-SMX, among other antibiotics. Our patient was treated successfully with surgical excision, drainage, and a 10-day course of TMP-SMX.

Conclusion

Health care providers should recognize A xylosoxidans as an emerging pathogen that is capable of forming biofilms on “disinfected” surfaces and medical products, especially plastics. Achromobacter xylosoxidans may be resistant to multiple antibiotics and can cause infections with various presentations.

Case Report

A 50-year-old woman presented with a sore, tender, red lump on the right superior buttock of 5 months’ duration. Five months prior to presentation the patient used this area to attach the infusion set for an insulin pump, which was left in place for 7 days as opposed to the 2 or 3 days recommended by the device manufacturer. A firm, slightly tender lump formed, similar to prior scars that had developed from use of the insulin pump. However, the lump began to grow and get softer. It was intermittently warm and red. Although the area was sore and tender, she never had any major pain. She also denied any fever, malaise, or other systemic symptoms.

The patient indicated a medical history of type 1 diabetes mellitus diagnosed at 9 years of age; hypertension; asthma; gastroesophageal reflux disease; allergic rhinitis; migraine headaches; depression; hidradenitis suppurativa that resolved after surgical excision; and recurrent vaginal yeast infections, especially when taking antibiotics. She had a surgical history of hidradenitis suppurativa excision at the inguinal folds, bilateral carpal tunnel release, tubal ligation, abdominoplasty, and cholecystectomy. The patient’s current medications included insulin aspart, mometasone furoate, inhaled fluticasone, pantoprazole, cetirizine, spironolactone, duloxetine, sumatriptan, fluconazole, topiramate, and enalapril.

Physical examination revealed normal vital signs and the patient was afebrile. She had no swollen or tender lymph nodes. There was a 5.5×7.0-cm, soft, tender, erythematous subcutaneous mass with no visible punctum or overlying epidermal change on the right superior buttock (Figure 1). Based on the history and physical examination, the differential diagnosis included subcutaneous fat necrosis, epidermal inclusion cyst, and an abscess.

Comment

Achromobacter xylosoxidans is a nonfermentative, non–spore-forming, motile, gram-negative, aerobic, catalase-positive and oxidase-positive flagellate bacterium. It is an emerging pathogen that was first isolated in 1971 from patients with chronic otitis media.¹ Since its recognition, it has been documented to cause a variety of infections, including pneumonia, meningitis, osteomyelitis, endocarditis, and bacteremia, as well as abdominal, urinary tract, ocular, and skin and soft tissue infections.^2,3 Those affected usually are immunocompromised, have hematologic disorders, or have indwelling catheters.⁴ Strains of A xylosoxidans have shown resistance to multiple antibiotics including penicillins, cephalosporins, carbapenems, aminoglycosides, macrolides, fluoroquinolones, and TMP-SMX. Achromobacter xylosoxidans has been documented to form biofilms on plastics, including on contact lenses, urinary and intravenous catheters, and reusable tissue dispensers treated with disinfectant solution.^4-6 One study demonstrated that A xylosoxidans is even capable of biodegradation of plastic, using the plastic as its sole source of carbon.⁷

Our case illustrates an indolent infection with A xylosoxidans forming a granulomatous abscess at the site of an insulin pump that was left in place for 7 days in an immunocompetent patient. Although infections with A xylosoxidans in patients with urinary or intravenous catheters have been reported,⁴ our case is unique, as the insulin pump was the source of such an infection. It is possible that the subcutaneous focus of acellular material described on the pathology report represented a partially biodegraded piece of the insulin pump catheter that broke off and was serving as a nidus of infection for A xylosoxidans. Although multidrug resistance is common, the culture grown from our patient was susceptible to TMP-SMX, among other antibiotics. Our patient was treated successfully with surgical excision, drainage, and a 10-day course of TMP-SMX.

Conclusion

Health care providers should recognize A xylosoxidans as an emerging pathogen that is capable of forming biofilms on “disinfected” surfaces and medical products, especially plastics. Achromobacter xylosoxidans may be resistant to multiple antibiotics and can cause infections with various presentations.

Case Report

A 50-year-old woman presented with a sore, tender, red lump on the right superior buttock of 5 months’ duration. Five months prior to presentation the patient used this area to attach the infusion set for an insulin pump, which was left in place for 7 days as opposed to the 2 or 3 days recommended by the device manufacturer. A firm, slightly tender lump formed, similar to prior scars that had developed from use of the insulin pump. However, the lump began to grow and get softer. It was intermittently warm and red. Although the area was sore and tender, she never had any major pain. She also denied any fever, malaise, or other systemic symptoms.

The patient indicated a medical history of type 1 diabetes mellitus diagnosed at 9 years of age; hypertension; asthma; gastroesophageal reflux disease; allergic rhinitis; migraine headaches; depression; hidradenitis suppurativa that resolved after surgical excision; and recurrent vaginal yeast infections, especially when taking antibiotics. She had a surgical history of hidradenitis suppurativa excision at the inguinal folds, bilateral carpal tunnel release, tubal ligation, abdominoplasty, and cholecystectomy. The patient’s current medications included insulin aspart, mometasone furoate, inhaled fluticasone, pantoprazole, cetirizine, spironolactone, duloxetine, sumatriptan, fluconazole, topiramate, and enalapril.

Physical examination revealed normal vital signs and the patient was afebrile. She had no swollen or tender lymph nodes. There was a 5.5×7.0-cm, soft, tender, erythematous subcutaneous mass with no visible punctum or overlying epidermal change on the right superior buttock (Figure 1). Based on the history and physical examination, the differential diagnosis included subcutaneous fat necrosis, epidermal inclusion cyst, and an abscess.

Comment

Achromobacter xylosoxidans is a nonfermentative, non–spore-forming, motile, gram-negative, aerobic, catalase-positive and oxidase-positive flagellate bacterium. It is an emerging pathogen that was first isolated in 1971 from patients with chronic otitis media.¹ Since its recognition, it has been documented to cause a variety of infections, including pneumonia, meningitis, osteomyelitis, endocarditis, and bacteremia, as well as abdominal, urinary tract, ocular, and skin and soft tissue infections.^2,3 Those affected usually are immunocompromised, have hematologic disorders, or have indwelling catheters.⁴ Strains of A xylosoxidans have shown resistance to multiple antibiotics including penicillins, cephalosporins, carbapenems, aminoglycosides, macrolides, fluoroquinolones, and TMP-SMX. Achromobacter xylosoxidans has been documented to form biofilms on plastics, including on contact lenses, urinary and intravenous catheters, and reusable tissue dispensers treated with disinfectant solution.^4-6 One study demonstrated that A xylosoxidans is even capable of biodegradation of plastic, using the plastic as its sole source of carbon.⁷

Our case illustrates an indolent infection with A xylosoxidans forming a granulomatous abscess at the site of an insulin pump that was left in place for 7 days in an immunocompetent patient. Although infections with A xylosoxidans in patients with urinary or intravenous catheters have been reported,⁴ our case is unique, as the insulin pump was the source of such an infection. It is possible that the subcutaneous focus of acellular material described on the pathology report represented a partially biodegraded piece of the insulin pump catheter that broke off and was serving as a nidus of infection for A xylosoxidans. Although multidrug resistance is common, the culture grown from our patient was susceptible to TMP-SMX, among other antibiotics. Our patient was treated successfully with surgical excision, drainage, and a 10-day course of TMP-SMX.

Conclusion

Health care providers should recognize A xylosoxidans as an emerging pathogen that is capable of forming biofilms on “disinfected” surfaces and medical products, especially plastics. Achromobacter xylosoxidans may be resistant to multiple antibiotics and can cause infections with various presentations.

Leishmaniasis is a neglected parasitic disease with an estimated annual incidence of 1.3 million cases, the majority of which manifest as cutaneous leishmaniasis.¹ The cutaneous and mucosal forms demonstrate substantial global burden with morbidity and socioeconomic repercussions, while the visceral form is responsible for up to 30,000 deaths annually.² Despite increasing prevalence in the United States, awareness and diagnosis remain relatively low.³ We describe 2 cases of cutaneous leishmaniasis in New England, United States, in travelers returning from Central America, both successfully treated with miltefosine. We also review prevention, diagnosis, and treatment options.

Case Reports

Patient 1
A 47-year-old woman presented with an enlarging, 2-cm, erythematous, ulcerated nodule on the right dorsal hand of 2 weeks’ duration with accompanying right epitrochlear lymphadenopathy (Figure 1A). She noticed the lesion 10 weeks after returning from Panama, where she had been photographing the jungle. Prior to the initial presentation to dermatology, salicylic acid wart remover, intramuscular ceftriaxone, and oral trimethoprim had failed to alleviate the lesion. Her laboratory results were notable for an elevated C-reactive protein level of 5.4 mg/L (reference range, ≤4.9 mg/L). A punch biopsy demonstrated pseudoepitheliomatous hyperplasia with diffuse dermal lymphohistiocytic inflammation and small intracytoplasmic structures within histiocytes consistent with leishmaniasis (Figure 2). Immunohistochemistry was consistent with leishmaniasis (Figure 3), and polymerase chain reaction performed by the Centers for Disease Control and Prevention (CDC) identified the pathogen as Leishmania braziliensis.

Patient 2
An 18-year-old man presented with an enlarging, well-delineated, tender ulcer of 6 weeks’ duration measuring 2.5×2 cm with an erythematous and edematous border on the right medial forearm with associated epitrochlear lymphadenopathy (Figure 4). Nine weeks prior to initial presentation, he had returned from a 3-month outdoor adventure trip to the Florida Keys, Costa Rica, and Panama. He had used bug repellent intermittently, slept under a bug net, and did not recall any trauma or bite at the ulcer site. Biopsy and tissue culture were obtained, and histopathology demonstrated an ulcer with a dense dermal lymphogranulomatous infiltrate and intracytoplasmic organisms consistent with leishmaniasis. Polymerase chain reaction by the CDC identified the pathogen as Leishmania panamensis.

Comment

Epidemiology and Prevention
Risk factors for leishmaniasis include weak immunity, poverty, poor housing, poor sanitation, malnutrition, urbanization, climate change, and human migration.⁴ Our patients were most directly affected by travel to locations where leishmaniasis is endemic. Despite an increasing prevalence of endemic leishmaniasis and new animal hosts in the southern United States, most patients diagnosed in the United States are infected abroad by Leishmania mexicana and L braziliensis, both cutaneous New World species.³ Our patients were infected by species within the New World subgenus Viannia that have potential for mucocutaneous spread.⁴

Because there is no chemoprophylaxis or acquired active immunity such as vaccines that can mitigate the risk for leishmaniasis, public health efforts focus on preventive measures. Although difficult to achieve, avoidance of the phlebotomine sand fly species that transmit the obligate intracellular Leishmania parasite is a most effective measure.⁴ Travelers entering geographic regions with higher risk for leishmaniasis should be aware of the inherent risk and determine which methods of prevention, such as N,N-diethyl-meta-toluamide (DEET) insecticides or permethrin-treated protective clothing, are most feasible. Although higher concentrations of DEET provide longer protection, the effectiveness tends to plateau at approximately 50%.⁵

Presentation and Prognosis
For patients who develop leishmaniasis, the disease course and prognosis depend greatly on the species and manifestation. The most common form of leishmaniasis is localized cutaneous leishmaniasis, which has an annual incidence of up to 1 million cases. It initially presents as macules, usually at the site of inoculation within several months to years of infection.⁶ The macules expand into papules and plaques that reach maximum size over at least 1 week⁴ and then progress into crusted ulcers up to 5 cm in diameter with raised edges. Although usually painless and self-limited, these lesions can take years to spontaneously heal, with the risk for atrophic scarring and altered pigmentation. Lymphatic involvement manifests as lymphadenitis or regional lymphadenopathy and is common with lesions caused by the subgenus Viannia.⁶

Leishmania braziliensis and L panamensis, the species that infected our patients, can uniquely cause cutaneous leishmaniasis that metastasizes into mucocutaneous leishmaniasis, which always affects the nasal mucosa. Risk factors for transformation include a primary lesion site above the waist, multiple or large primary lesions, and delayed healing of primary cutaneous leishmaniasis. Mucocutaneous leishmaniasis can result in notable morbidity and even mortality from invasion and destruction of nasal and oropharyngeal mucosa, as well as intercurrent pneumonia, especially if treatment is insufficient or delayed.⁴

Diagnosis
Prompt treatment relies on accurate and timely diagnosis, which is complicated by the relative unfamiliarity with leishmaniasis in the United States. The differential diagnosis for cutaneous leishmaniasis is broad, including deep fungal infection, Mycobacterium infection, cutaneous granulomatous conditions, nonmelanoma cutaneous neoplasms, and trauma. Taking a thorough patient history, including potential exposures and travels; having high clinical suspicion; and being aware of classic presentation allows for identification of leishmaniasis and subsequent stratification by manifestation.⁷

Diagnosis is made by detecting Leishmania organisms or DNA using light microscopy and staining to visualize the kinetoplast in an amastigote, molecular methods, or specialized culturing.⁷ The CDC is a valuable diagnostic partner for confirmation and speciation. Specific instructions for specimen collection and transportation can be found by contacting the CDC or reading their guide.⁸ To provide prompt care and reassurance to patients, it is important to be aware of the coordination effort that may be needed to send samples, receive results, and otherwise correspond with a separate institution.

Treatment
Treatment of cutaneous leishmaniasis is indicated to decrease the risk for mucosal dissemination and clinical reactivation of lesions, accelerate healing of lesions, decrease local morbidity caused by large or persistent lesions, and decrease the reservoir of infection in places where infected humans serve as reservoir hosts. Oral treatments include ketoconazole, itraconazole, and fluconazole, recommended at doses ranging from 200 to 600 mg daily for at least 28 days. For severe, refractory, or visceral leishmaniasis, parenteral choices include pentavalent antimonials, amphotericin B deoxycholate, and pentamidine isethionate, each with known toxicity or limited data on efficacy.⁶ Pentavalent antimonials can cause life-threatening cardiotoxicity and are more difficult to administer.⁹ Furthermore, they are not approved by the US Food and Drug Administration or commercially available in the United States, with only sodium stibogluconate available through the CDC.⁶

Miltefosine is becoming a more common treatment of leishmaniasis because of its oral route, tolerability in nonpregnant patients, and commercial availability. It was approved by the US Food and Drug Administration in 2014 for cutaneous leishmaniasis due to L braziliensis, L panamensis, and Leishmania guyanensis; mucosal leishmaniasis due to L braziliensis; and visceral leishmaniasis due to Leishmania donovani in patients at least 12 years of age. For cutaneous leishmaniasis, the standard dosage of 50 mg twice daily (for patients weighing 30–44 kg) or 3 times daily (for patients weighing 45 kg or more) for 28 consecutive days has cure rates of 48% to 85% by 6 months after therapy ends. Cure is defined as epithelialization of lesions, no enlargement greater than 50% in lesions, no appearance of new lesions, and/or negative parasitology. The antileishmanial mechanism of action is unknown and likely involves interaction with lipids, inhibition of cytochrome c oxidase, and apoptosislike cell death. Miltefosine is contraindicated in pregnancy. The most common adverse reactions in patients include nausea (35.9%–41.7%), motion sickness (29.2%), headache (28.1%), and emesis (4.5%–27.5%). With the exception of headache, these adverse reactions can decrease with administration of food, fluids, and antiemetics. Potentially more serious but rarer adverse reactions include elevated serum creatinine (5%–25%) and transaminases (5%). Although our patients had mild hyperkalemia, it is not an established adverse reaction. However, renal injury has been reported.¹⁰

Conclusion

Cutaneous leishmaniasis is increasing in prevalence in the United States due to increased foreign travel. Providers should be familiar with the cutaneous presentation of leishmaniasis, even in areas of low prevalence, to limit the risk for mucocutaneous dissemination from infection with the subgenus Viannia. Prompt treatment is vital to ensuring the best prognosis, and first-line treatment with miltefosine should be strongly considered given its efficacy and tolerability.

Leishmaniasis is a neglected parasitic disease with an estimated annual incidence of 1.3 million cases, the majority of which manifest as cutaneous leishmaniasis.¹ The cutaneous and mucosal forms demonstrate substantial global burden with morbidity and socioeconomic repercussions, while the visceral form is responsible for up to 30,000 deaths annually.² Despite increasing prevalence in the United States, awareness and diagnosis remain relatively low.³ We describe 2 cases of cutaneous leishmaniasis in New England, United States, in travelers returning from Central America, both successfully treated with miltefosine. We also review prevention, diagnosis, and treatment options.

Case Reports

Patient 1
A 47-year-old woman presented with an enlarging, 2-cm, erythematous, ulcerated nodule on the right dorsal hand of 2 weeks’ duration with accompanying right epitrochlear lymphadenopathy (Figure 1A). She noticed the lesion 10 weeks after returning from Panama, where she had been photographing the jungle. Prior to the initial presentation to dermatology, salicylic acid wart remover, intramuscular ceftriaxone, and oral trimethoprim had failed to alleviate the lesion. Her laboratory results were notable for an elevated C-reactive protein level of 5.4 mg/L (reference range, ≤4.9 mg/L). A punch biopsy demonstrated pseudoepitheliomatous hyperplasia with diffuse dermal lymphohistiocytic inflammation and small intracytoplasmic structures within histiocytes consistent with leishmaniasis (Figure 2). Immunohistochemistry was consistent with leishmaniasis (Figure 3), and polymerase chain reaction performed by the Centers for Disease Control and Prevention (CDC) identified the pathogen as Leishmania braziliensis.

Patient 2
An 18-year-old man presented with an enlarging, well-delineated, tender ulcer of 6 weeks’ duration measuring 2.5×2 cm with an erythematous and edematous border on the right medial forearm with associated epitrochlear lymphadenopathy (Figure 4). Nine weeks prior to initial presentation, he had returned from a 3-month outdoor adventure trip to the Florida Keys, Costa Rica, and Panama. He had used bug repellent intermittently, slept under a bug net, and did not recall any trauma or bite at the ulcer site. Biopsy and tissue culture were obtained, and histopathology demonstrated an ulcer with a dense dermal lymphogranulomatous infiltrate and intracytoplasmic organisms consistent with leishmaniasis. Polymerase chain reaction by the CDC identified the pathogen as Leishmania panamensis.

Comment

Epidemiology and Prevention
Risk factors for leishmaniasis include weak immunity, poverty, poor housing, poor sanitation, malnutrition, urbanization, climate change, and human migration.⁴ Our patients were most directly affected by travel to locations where leishmaniasis is endemic. Despite an increasing prevalence of endemic leishmaniasis and new animal hosts in the southern United States, most patients diagnosed in the United States are infected abroad by Leishmania mexicana and L braziliensis, both cutaneous New World species.³ Our patients were infected by species within the New World subgenus Viannia that have potential for mucocutaneous spread.⁴

Because there is no chemoprophylaxis or acquired active immunity such as vaccines that can mitigate the risk for leishmaniasis, public health efforts focus on preventive measures. Although difficult to achieve, avoidance of the phlebotomine sand fly species that transmit the obligate intracellular Leishmania parasite is a most effective measure.⁴ Travelers entering geographic regions with higher risk for leishmaniasis should be aware of the inherent risk and determine which methods of prevention, such as N,N-diethyl-meta-toluamide (DEET) insecticides or permethrin-treated protective clothing, are most feasible. Although higher concentrations of DEET provide longer protection, the effectiveness tends to plateau at approximately 50%.⁵

Presentation and Prognosis
For patients who develop leishmaniasis, the disease course and prognosis depend greatly on the species and manifestation. The most common form of leishmaniasis is localized cutaneous leishmaniasis, which has an annual incidence of up to 1 million cases. It initially presents as macules, usually at the site of inoculation within several months to years of infection.⁶ The macules expand into papules and plaques that reach maximum size over at least 1 week⁴ and then progress into crusted ulcers up to 5 cm in diameter with raised edges. Although usually painless and self-limited, these lesions can take years to spontaneously heal, with the risk for atrophic scarring and altered pigmentation. Lymphatic involvement manifests as lymphadenitis or regional lymphadenopathy and is common with lesions caused by the subgenus Viannia.⁶

Leishmania braziliensis and L panamensis, the species that infected our patients, can uniquely cause cutaneous leishmaniasis that metastasizes into mucocutaneous leishmaniasis, which always affects the nasal mucosa. Risk factors for transformation include a primary lesion site above the waist, multiple or large primary lesions, and delayed healing of primary cutaneous leishmaniasis. Mucocutaneous leishmaniasis can result in notable morbidity and even mortality from invasion and destruction of nasal and oropharyngeal mucosa, as well as intercurrent pneumonia, especially if treatment is insufficient or delayed.⁴

Diagnosis
Prompt treatment relies on accurate and timely diagnosis, which is complicated by the relative unfamiliarity with leishmaniasis in the United States. The differential diagnosis for cutaneous leishmaniasis is broad, including deep fungal infection, Mycobacterium infection, cutaneous granulomatous conditions, nonmelanoma cutaneous neoplasms, and trauma. Taking a thorough patient history, including potential exposures and travels; having high clinical suspicion; and being aware of classic presentation allows for identification of leishmaniasis and subsequent stratification by manifestation.⁷

Diagnosis is made by detecting Leishmania organisms or DNA using light microscopy and staining to visualize the kinetoplast in an amastigote, molecular methods, or specialized culturing.⁷ The CDC is a valuable diagnostic partner for confirmation and speciation. Specific instructions for specimen collection and transportation can be found by contacting the CDC or reading their guide.⁸ To provide prompt care and reassurance to patients, it is important to be aware of the coordination effort that may be needed to send samples, receive results, and otherwise correspond with a separate institution.

Treatment
Treatment of cutaneous leishmaniasis is indicated to decrease the risk for mucosal dissemination and clinical reactivation of lesions, accelerate healing of lesions, decrease local morbidity caused by large or persistent lesions, and decrease the reservoir of infection in places where infected humans serve as reservoir hosts. Oral treatments include ketoconazole, itraconazole, and fluconazole, recommended at doses ranging from 200 to 600 mg daily for at least 28 days. For severe, refractory, or visceral leishmaniasis, parenteral choices include pentavalent antimonials, amphotericin B deoxycholate, and pentamidine isethionate, each with known toxicity or limited data on efficacy.⁶ Pentavalent antimonials can cause life-threatening cardiotoxicity and are more difficult to administer.⁹ Furthermore, they are not approved by the US Food and Drug Administration or commercially available in the United States, with only sodium stibogluconate available through the CDC.⁶

Miltefosine is becoming a more common treatment of leishmaniasis because of its oral route, tolerability in nonpregnant patients, and commercial availability. It was approved by the US Food and Drug Administration in 2014 for cutaneous leishmaniasis due to L braziliensis, L panamensis, and Leishmania guyanensis; mucosal leishmaniasis due to L braziliensis; and visceral leishmaniasis due to Leishmania donovani in patients at least 12 years of age. For cutaneous leishmaniasis, the standard dosage of 50 mg twice daily (for patients weighing 30–44 kg) or 3 times daily (for patients weighing 45 kg or more) for 28 consecutive days has cure rates of 48% to 85% by 6 months after therapy ends. Cure is defined as epithelialization of lesions, no enlargement greater than 50% in lesions, no appearance of new lesions, and/or negative parasitology. The antileishmanial mechanism of action is unknown and likely involves interaction with lipids, inhibition of cytochrome c oxidase, and apoptosislike cell death. Miltefosine is contraindicated in pregnancy. The most common adverse reactions in patients include nausea (35.9%–41.7%), motion sickness (29.2%), headache (28.1%), and emesis (4.5%–27.5%). With the exception of headache, these adverse reactions can decrease with administration of food, fluids, and antiemetics. Potentially more serious but rarer adverse reactions include elevated serum creatinine (5%–25%) and transaminases (5%). Although our patients had mild hyperkalemia, it is not an established adverse reaction. However, renal injury has been reported.¹⁰

Conclusion

Cutaneous leishmaniasis is increasing in prevalence in the United States due to increased foreign travel. Providers should be familiar with the cutaneous presentation of leishmaniasis, even in areas of low prevalence, to limit the risk for mucocutaneous dissemination from infection with the subgenus Viannia. Prompt treatment is vital to ensuring the best prognosis, and first-line treatment with miltefosine should be strongly considered given its efficacy and tolerability.

Leishmaniasis is a neglected parasitic disease with an estimated annual incidence of 1.3 million cases, the majority of which manifest as cutaneous leishmaniasis.¹ The cutaneous and mucosal forms demonstrate substantial global burden with morbidity and socioeconomic repercussions, while the visceral form is responsible for up to 30,000 deaths annually.² Despite increasing prevalence in the United States, awareness and diagnosis remain relatively low.³ We describe 2 cases of cutaneous leishmaniasis in New England, United States, in travelers returning from Central America, both successfully treated with miltefosine. We also review prevention, diagnosis, and treatment options.

Case Reports

Patient 1
A 47-year-old woman presented with an enlarging, 2-cm, erythematous, ulcerated nodule on the right dorsal hand of 2 weeks’ duration with accompanying right epitrochlear lymphadenopathy (Figure 1A). She noticed the lesion 10 weeks after returning from Panama, where she had been photographing the jungle. Prior to the initial presentation to dermatology, salicylic acid wart remover, intramuscular ceftriaxone, and oral trimethoprim had failed to alleviate the lesion. Her laboratory results were notable for an elevated C-reactive protein level of 5.4 mg/L (reference range, ≤4.9 mg/L). A punch biopsy demonstrated pseudoepitheliomatous hyperplasia with diffuse dermal lymphohistiocytic inflammation and small intracytoplasmic structures within histiocytes consistent with leishmaniasis (Figure 2). Immunohistochemistry was consistent with leishmaniasis (Figure 3), and polymerase chain reaction performed by the Centers for Disease Control and Prevention (CDC) identified the pathogen as Leishmania braziliensis.

Patient 2
An 18-year-old man presented with an enlarging, well-delineated, tender ulcer of 6 weeks’ duration measuring 2.5×2 cm with an erythematous and edematous border on the right medial forearm with associated epitrochlear lymphadenopathy (Figure 4). Nine weeks prior to initial presentation, he had returned from a 3-month outdoor adventure trip to the Florida Keys, Costa Rica, and Panama. He had used bug repellent intermittently, slept under a bug net, and did not recall any trauma or bite at the ulcer site. Biopsy and tissue culture were obtained, and histopathology demonstrated an ulcer with a dense dermal lymphogranulomatous infiltrate and intracytoplasmic organisms consistent with leishmaniasis. Polymerase chain reaction by the CDC identified the pathogen as Leishmania panamensis.

Comment

Epidemiology and Prevention
Risk factors for leishmaniasis include weak immunity, poverty, poor housing, poor sanitation, malnutrition, urbanization, climate change, and human migration.⁴ Our patients were most directly affected by travel to locations where leishmaniasis is endemic. Despite an increasing prevalence of endemic leishmaniasis and new animal hosts in the southern United States, most patients diagnosed in the United States are infected abroad by Leishmania mexicana and L braziliensis, both cutaneous New World species.³ Our patients were infected by species within the New World subgenus Viannia that have potential for mucocutaneous spread.⁴

Because there is no chemoprophylaxis or acquired active immunity such as vaccines that can mitigate the risk for leishmaniasis, public health efforts focus on preventive measures. Although difficult to achieve, avoidance of the phlebotomine sand fly species that transmit the obligate intracellular Leishmania parasite is a most effective measure.⁴ Travelers entering geographic regions with higher risk for leishmaniasis should be aware of the inherent risk and determine which methods of prevention, such as N,N-diethyl-meta-toluamide (DEET) insecticides or permethrin-treated protective clothing, are most feasible. Although higher concentrations of DEET provide longer protection, the effectiveness tends to plateau at approximately 50%.⁵

Presentation and Prognosis
For patients who develop leishmaniasis, the disease course and prognosis depend greatly on the species and manifestation. The most common form of leishmaniasis is localized cutaneous leishmaniasis, which has an annual incidence of up to 1 million cases. It initially presents as macules, usually at the site of inoculation within several months to years of infection.⁶ The macules expand into papules and plaques that reach maximum size over at least 1 week⁴ and then progress into crusted ulcers up to 5 cm in diameter with raised edges. Although usually painless and self-limited, these lesions can take years to spontaneously heal, with the risk for atrophic scarring and altered pigmentation. Lymphatic involvement manifests as lymphadenitis or regional lymphadenopathy and is common with lesions caused by the subgenus Viannia.⁶

Leishmania braziliensis and L panamensis, the species that infected our patients, can uniquely cause cutaneous leishmaniasis that metastasizes into mucocutaneous leishmaniasis, which always affects the nasal mucosa. Risk factors for transformation include a primary lesion site above the waist, multiple or large primary lesions, and delayed healing of primary cutaneous leishmaniasis. Mucocutaneous leishmaniasis can result in notable morbidity and even mortality from invasion and destruction of nasal and oropharyngeal mucosa, as well as intercurrent pneumonia, especially if treatment is insufficient or delayed.⁴

Diagnosis
Prompt treatment relies on accurate and timely diagnosis, which is complicated by the relative unfamiliarity with leishmaniasis in the United States. The differential diagnosis for cutaneous leishmaniasis is broad, including deep fungal infection, Mycobacterium infection, cutaneous granulomatous conditions, nonmelanoma cutaneous neoplasms, and trauma. Taking a thorough patient history, including potential exposures and travels; having high clinical suspicion; and being aware of classic presentation allows for identification of leishmaniasis and subsequent stratification by manifestation.⁷

Diagnosis is made by detecting Leishmania organisms or DNA using light microscopy and staining to visualize the kinetoplast in an amastigote, molecular methods, or specialized culturing.⁷ The CDC is a valuable diagnostic partner for confirmation and speciation. Specific instructions for specimen collection and transportation can be found by contacting the CDC or reading their guide.⁸ To provide prompt care and reassurance to patients, it is important to be aware of the coordination effort that may be needed to send samples, receive results, and otherwise correspond with a separate institution.

Treatment
Treatment of cutaneous leishmaniasis is indicated to decrease the risk for mucosal dissemination and clinical reactivation of lesions, accelerate healing of lesions, decrease local morbidity caused by large or persistent lesions, and decrease the reservoir of infection in places where infected humans serve as reservoir hosts. Oral treatments include ketoconazole, itraconazole, and fluconazole, recommended at doses ranging from 200 to 600 mg daily for at least 28 days. For severe, refractory, or visceral leishmaniasis, parenteral choices include pentavalent antimonials, amphotericin B deoxycholate, and pentamidine isethionate, each with known toxicity or limited data on efficacy.⁶ Pentavalent antimonials can cause life-threatening cardiotoxicity and are more difficult to administer.⁹ Furthermore, they are not approved by the US Food and Drug Administration or commercially available in the United States, with only sodium stibogluconate available through the CDC.⁶

Miltefosine is becoming a more common treatment of leishmaniasis because of its oral route, tolerability in nonpregnant patients, and commercial availability. It was approved by the US Food and Drug Administration in 2014 for cutaneous leishmaniasis due to L braziliensis, L panamensis, and Leishmania guyanensis; mucosal leishmaniasis due to L braziliensis; and visceral leishmaniasis due to Leishmania donovani in patients at least 12 years of age. For cutaneous leishmaniasis, the standard dosage of 50 mg twice daily (for patients weighing 30–44 kg) or 3 times daily (for patients weighing 45 kg or more) for 28 consecutive days has cure rates of 48% to 85% by 6 months after therapy ends. Cure is defined as epithelialization of lesions, no enlargement greater than 50% in lesions, no appearance of new lesions, and/or negative parasitology. The antileishmanial mechanism of action is unknown and likely involves interaction with lipids, inhibition of cytochrome c oxidase, and apoptosislike cell death. Miltefosine is contraindicated in pregnancy. The most common adverse reactions in patients include nausea (35.9%–41.7%), motion sickness (29.2%), headache (28.1%), and emesis (4.5%–27.5%). With the exception of headache, these adverse reactions can decrease with administration of food, fluids, and antiemetics. Potentially more serious but rarer adverse reactions include elevated serum creatinine (5%–25%) and transaminases (5%). Although our patients had mild hyperkalemia, it is not an established adverse reaction. However, renal injury has been reported.¹⁰

Conclusion

Cutaneous leishmaniasis is increasing in prevalence in the United States due to increased foreign travel. Providers should be familiar with the cutaneous presentation of leishmaniasis, even in areas of low prevalence, to limit the risk for mucocutaneous dissemination from infection with the subgenus Viannia. Prompt treatment is vital to ensuring the best prognosis, and first-line treatment with miltefosine should be strongly considered given its efficacy and tolerability.

Psoriasis is a common chronic, multisystem, inflammatory disease with predominantly skin and joint manifestations that affects approximately 2% of the world’s population.¹ It occurs in a variety of clinical forms, from a few well-demarcated, erythematous plaques with a silvery scale to involvement of almost the entire body surface area. Beyond the debilitating physical ailments of the disease, psoriasis also may have psychosocial effects on quality of life.² The pathogenesis of psoriasis is not fully understood but represents a complex multifactorial disease with both immune-mediated and genetic components. Characterized by hyperplasia of epidermal keratinocytes, psoriasis is shown to be mediated by infiltration of T-cell lymphocytes with an increase of various inflammatory cytokines, including tumor necrosis factor (TNF) α.³ More recently, interactions of helper T cells (T_H17) via IL-17 and IL-23 have been supported to play a major role in the pathogenesis of psoriasis.^4,5

With the growing understanding of the pathophysiology of psoriasis, focused biologics have been developed to target specific cytokines implicated in the disease process and have been increasingly utilized. Tumor necrosis factor α inhibitors, including adalimumab, infliximab, and etanercept, along with the IL-12/IL-23 inhibitor ustekinumab, have been revolutionary in psoriasis treatment by providing safe and effective long-term therapy; however, there is concern of life-threatening infections with biologics because of the immunosuppressive effects and mechanisms of action.⁶ Specifically, there have been reported cases of deep fungal infections associated with TNF-α inhibitor use.⁷

Recently, the advent of IL-17 and IL-23 inhibitors has garnered notable interest in these biologics as promising treatments for psoriasis. With IL-17 and IL-23 supported to have a major role in the pathogenesis of psoriasis, targeting the cytokine is not only logical but also has proven to be effacacious.^8-10 Secukinumab, ixekizumab, and brodalumab are IL-17 inhibitors that have been approved by the US Food and Drug Administration (FDA) for the treatment of psoriasis. Secukinumab and ixekizumab are anti–IL-17A monoclonal antibodies, whereas brodalumab is an anti–IL-17 receptor antibody. Risankizumab, guselkumab, and tildrakizumab are IL-23 inhibitors that also have been approved by the FDA for the treatment of psoriasis. As with older biologics, there is concern over the safety of these inhibitors because of the central role of IL-17 and IL-23 in both innate and adaptive immune responses, particularly against fungi.¹¹ Therefore, use of biologics targeting IL-17 and IL-23 may increase susceptibility to deep fungal infections.

Safety data and discussion of the risk for deep fungal infections from IL-17, IL-12/IL-23, and IL-23 inhibitor use for psoriasis treatment currently are lacking. Given the knowledge gap, we sought to synthesize and review the current evidence on risks for deep fungal infections during biologic therapy in patients with psoriasis, with a focus on IL-17 inhibitor therapies.

METHODS

A PubMed search of articles indexed for MEDLINE from database inception to 2019 (1946-2019) was performed to find randomized controlled trials (RCTs), including extended trials and clinical trials, for IL-17, IL-12/IL-23, and IL-23 inhibitors approved by the FDA for psoriasis treatment. The following keywords were used: psoriasis or inflammatory disease and secukinumab, ixekizumab, brodalumab, ustekinumab, risankizumab, guselkumab, or tildrakizumab. Studies were restricted to the English-language literature, and those that did not provide adequate safety data on the specific types of infections that occurred were excluded.

RESULTSIL-17 Inhibitors

Our search yielded RCTs, some including extension trials, and clinical trials of IL-17 inhibitors used for psoriatic disease and other nonpsoriatic conditions (Table).

Risk for Deep Fungal Infection With Secukinumab
The queried studies included 20 RCTs or clinical trials along with extension trials of 3746 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 52 weeks. In a 3-year extension study of SCULPTURE, Bissonnette et al¹² reported no new safety concerns for the 340 patients with moderate to severe psoriasis treated with secukinumab. Common adverse events (AEs) included nasopharyngitis, upper respiratory tract infections, and headache, but there were no reports of deep fungal infections.¹² In a subsequent 5-year analysis of 168 patients that focused on the 300-mg fixed interval treatment with secukinumab, the safety profile remained favorable, with 0 reports of invasive fungal infections.¹³ A study (FEATURE) of 118 patients with psoriasis treated with a prefilled syringe of 300 or 150 mg of secukinumab also described an acceptable safety profile and reported no deep fungal infections.¹⁴ JUNCTURE, another study utilizing autoinjectors, also found that treatment with 300 or 150 mg of secukinumab was well tolerated in 121 patients, with no deep fungal infections.¹⁵ Common AEs for both studies included nasopharyngitis and headache.^14,15 A 24-week phase 3 study for scalp psoriasis treated with secukinumab also reported 0 deep fungal infections in 51 patients.¹⁶ In an RCT comparing secukinumab and ustekinumab for moderate to severe plaque psoriasis, Blauvelt et al¹⁷ demonstrated that the incidence of serious AEs was comparable between the 2 groups, with no reports of invasive fungal infections in the 334 patients exposed to secukinumab. The CLEAR study, which compared secukinumab and ustekinumab, also found no reported deep fungal disease in the 335 patients exposed to secukinumab.¹⁸ Secukinumab exhibited a similar safety profile to ustekinumab in both studies, with common AEs being headache and nasopharyngitis.^17,18 The GESTURE study investigated the efficacy of secukinumab in 137 patients with palmoplantar psoriasis and reported a favorable profile with no reports of deep fungal disease.¹⁹ In a subanalysis of the phase 3 study ERASURE, secukinumab was shown to have a robust and sustainable efficacy in 58 Japanese patients with moderate to severe plaque psoriasis, and there were no reports of invasive fungal infections.²⁰ Another subanalysis of 36 Taiwanese patients from the ERASURE study also had similar findings, with no dose relationship observed for AEs.²¹ In a phase 2 study of 103 patients with psoriasis, Papp et al²² demonstrated AE rates that were similar across different doses of secukinumab—3×150 mg, 3×75 mg, 3×25 mg, and 1×25 mg—and described no incidences of invasive fungal disease. In a phase 2 regimen-finding study of 337 patients conducted by Rich et al,²³ the most commonly reported AEs included nasopharyngitis, worsening psoriasis, and upper respiratory tract infections, but there were no reported deep fungal infections.

Our search also resulted in studies specific to the treatment of psoriatic arthritis (PsA) with secukinumab. McInnes et al⁹ conducted a phase 2 proof-of-concept trial for patients with PsA and reported no deep fungal infections in 28 patients exposed to 10 mg/kg of secukinumab. A 2-year follow-up with the cohort from FUTURE 1, a phase 3 clinical trial, also showed no new or unexpected safety signals in 404 patients exposed to 150 or 75 mg of secukinumab, including no reports of invasive fungal disease.²⁴ FUTURE 2, a phase 3 clinical trial, demonstrated that the most common AE was upper respiratory tract infection in the 299 patients treatedwith secukinumab, but there were no recorded invasive fungal infections.²⁵ In FUTURE 3, 277 patients were treated with secukinumab, with 14 nonserious candida infections but no observed deep fungal infections.²⁶ A study comparing secukinumab to fumaric acid esters reported that 6 of 105 patients treated with secukinumab also experienced superficial candidiasis, but there were no reports of deep fungal disease.²⁷

Secukinumab also has been used in the treatment of ankylosing spondylitis in a phase 3 RCT (MEASURE 1) in which 4 cases of superficial candidiasis were reported (0.7 cases per 100 patient-years of secukinumab) that were all resolved with standard antifungal therapy.²⁸ In MEASURE 2, a 5-year phase 3 RCT, 145 patients were treated with secukinumab for ankylosing spondylitis, with common AEs including nasopharyngitis, diarrhea, and upper respiratory tract infection, but there were no reports of any invasive fungal infections.²⁹ MEASURE 3 also demonstrated similar results in which no invasive fungal infections were observed.³⁰

Risk for Deep Fungal Infection With Ixekizumab
The queried studies included 7 RCTs or clinical trials of 3523 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 52 weeks. In UNCOVER-A, a phase 3 RCT of the pharmacokinetics and safety of ixekizumab, 204 patients were randomized to a prefilled syringe or autoinjector; 48% of patients experienced AEs, but no invasive fungal infections were observed.³¹ In an analysis of 3 phase 3 trials of ixekizumab including a total 2334 patients treated with ixekizumab from UNCOVER-1, UNCOVER-2, and UNCOVER-3, oral candidiasis frequently was reported, but no candidal infections met criteria for serious invasive infection.³² In UNCOVER-J, a 52-week phase 3 open-label trial of Japanese patients, 91 patients were treated for plaque psoriasis, erythrodermic psoriasis, or generalized pustular psoriasis using ixekizumab; the most common AEs included allergic reactions and injection-site reactions. One case of oral candidiasis was reported, but there were no reported cases of invasive fungal infections.³³ A comparison of ixekizumab vs ustekinumab from the IXORA-S trial demonstrated no substantial differences in AEs between the two, and no cases of deep fungal infections were reported. The most common AE between the 2 groups was nasopharyngitis.³⁴ An open-label extension over 4 years of a phase 2 RCT treated 211 patients with either 120 or 80 mg of ixekizumab; 87% of patients had experienced at least 1 AE, and all AEs were considered mild or moderate in severity, with no invasive fungal disease.³⁵

Our search also resulted in 1 study specific to the treatment of PsA with ixekizumab. A phase 3, 52-week study of patients treated with ixekizumab for PsA observed 2 incidences of oral candidiasis and nail candida infections, but no invasive fungal infections were reported.³⁶

We also found 1 study of ixekizumab used in the treatment of ankylosing spondylitis. COAST-V was a phase 3 RCT of patients treated for ankylosing spondylitis in which 164 patients were treated with ixekizumab; no serious AEs were recorded, including 0 deep fungal infections. The most common AEs observed were nasopharyngitis and upper respiratory tract infections.³⁷

Risk for Deep Fungal Infection With Brodalumab
The queried studies included 9 RCTs and 3 clinical trials along with extension trials of 1599 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 120 weeks. In a phase 2 RCT of Japanese patients with moderate to severe plaque psoriasis, 113 patients were treated with 70, 140, or 210 mg of brodalumab, and the most common AEs were nasopharyngitis, diarrhea, and upper respiratory tract inflammation. There were no reported cases of fungal infections in the study.³⁸ In an open-label extension study of Japanese patients that evaluated the long-term clinical safety of brodalumab, 145 patients were enrolled and observed similar AEs to the RCT, with 7 patients experiencing oral candidiasis and 1 patient having skin candidiasis, but there were no observed deep fungal infections.³⁹ In AMG 827, which evaluated the efficacy and safety of brodalumab, 320 patients were treated, and only 2 serious AEs were reported, neither of which were deep fungal disease.¹⁰ A phase 3 RCT conducted by Papp et al⁴⁰ (AMAGINE-1) also treated 441 patients with moderate to severe plaque psoriasis with brodalumab and observed candida infections in 9 patients that were mild to moderate and responsive to treatment, with no patients discontinuing the study. In a 120-week open-label extension study of 181 patients, Papp et al⁴¹ reported 8% of patients experienced serious AEs, with 1 case of latent tuberculosis that led to withdrawal of treatment. A study also investigated the efficacy and safety of brodalumab in 30 patients with generalized pustular psoriasis or psoriatic erythroderma and observed 2 cases of mild candida infections that resolved with treatment. There were no reports of invasive fungal disease.⁴²

Our search also resulted in studies of brodalumab used in the treatment of PsA and nonpsoriatic diseases. In one phase 2 RCT, 113 patients with PsA were treated with 140 mg, 280 mg, or combined doses of brodalumab, with the most common AEs being nasopharyngitis, upper respiratory tract infection, and diarrhea, but there were no reports of deep fungal infection.⁴³ In a phase 1b trial of patients with methotrexate-resistant rheumatoid arthritis treated with brodalumab, common AEs reported included headache, cough, and abdominal pain, with only 1 case of oral candidiasis that was determined not to be drug related.⁴⁴ Finally, an RCT of patients with moderate to severe asthma treated 226 patients with brodalumab and reported a greater incidence of oral candidiasis in treatment groups compared with placebo (3.5% vs 0%) but saw no instances of invasive fungal infection.⁴⁵

IL-12/IL-23 Inhibitor

Risk for Deep Fungal Infection With Ustekinumab
The queried studies included 4 RCTs of 954 patients with psoriasis treated with ustekinumab (eTable).^46-49 Within these trials, there were no reported cases of serious infections involving deep fungal organisms during the stated follow-up period. The literature search also found long-term safety data from the ACCEPT and PHOENIX trials that included 5437 patients with psoriasis treated with ustekinumab.^66,67 There also were no demonstrated incidences of invasive fungal disease in these studies, with most cases of infection being common bacterial or viral infections.

IL-23 Inhibitors

Risk for Deep Fungal Infection With Risankizumab, Guselkumab, and Tildrakizumab
The queried studies included 16 RCTs or clinical trials for psoriatic patients treated with IL-23 inhibitors, including 5 with risankizumab,^50-54 9 with guselkumab,^55-63 and 2 with tildrakizumab.^64,65 Within these trials there were no observed cases of serious infections with deep fungal disease.

COMMENT

Our literature review has demonstrated that there does not appear to be an increased incidence of deep fungal infections for patients treated with IL-17, IL-12/IL-23, or IL-23 inhibitors for psoriatic disease. All of the reviewed studies found no cases of invasive fungal infections for patients with psoriasis treated with secukinumab, ixekizumab, brodalumab, ustekinumab, risankizumab, guselkumab, or tildrakizumab. Patients with other inflammatory conditions, such as ankylosing spondylitis, rheumatoid arthritis, and asthma, also did not appear to show an increased incidence of deep fungal disease.

Although these results show promising safety data for the use of these biologic therapies in treating inflammatory conditions, caution still is warranted, as these medications still are relatively new, with FDA approvals within the last 5 years. Safety data among different study populations also cannot be derived without further investigation, and much of the available literature is limited in long-term data. More extended trials or registry data from a large, broadly representative cohort are necessary to establish the long-term safety and risk for deep fungal infections with IL-17 and especially the newer IL-23 inhibitors.

A small percentage of patients from the reviewed literature did develop superficial candidiasis. This outcome can be expected, as the central role of IL-17 and IL-23 has been recognized in immunologic protection against infections, specifically against fungi.¹¹ Because all of the fungal infections reported for patients on IL-17 inhibitors were superficial candidiasis, guides for practical management and treatment should be implemented to standardize future research and care. A proposed screening algorithm for patients on these biologic therapies involves safety monitoring, including inspection of the oral cavity, folds, and genitals, along with inquiring about symptoms such as burning, dysgeusia, and dysuria.⁶⁸ If infection is suspected, confirmation by culture, molecular method, or optimally with esophagoscopy can be performed, and appropriate treatment may be initiated.⁶⁸ Patients with candida infections of the oral cavity, folds, or genitals can be placed on topical therapy such as nystatin, amphotericin B, ciclopirox, or other azoles, while those with infections of the esophagus can be started on oral fluconazole.⁶⁸

Although there were no reported cases of deep fungal infections, the theoretical risk for developing one while on IL-17 and IL-23 inhibitors may warrant further screening prior to beginning therapy. The TNF inhibitors approved for the treatment of psoriasis currently contain a black box warning for risk for disseminated and extrapulmonary histoplasmosis, coccidioidomycosis, blastomycosis, and other invasive fungal infections, which may highlight the importance of thorough evaluation and awareness of endemic areas for patients on biologics. Prior to initiating treatment with TNF inhibitors, current suggestions involve performing a thorough examination along with keeping a high index of suspicion for invasive fungal infections in patients who live in or have traveled to endemic regions.⁶⁹

Screening for invasive fungal infections for patients on TNF inhibitors involves questioning about potential exposures, such as demolition of old buildings, bird roosts, or spelunking.⁷⁰ Serologies or antigen testing can be used routinely, but as these tests are insensitive, empiric antifungal therapy should be initiated if there is high enough clinical suspicion.⁷¹ Currently, there are no clinical guidelines regarding fungal screening and initiation of IL-17 and IL-23 inhibitors for treatment of psoriasis and other inflammatory conditions, but careful stewardship over using these effective medications should still be practiced.

Upon review of the available safety data on the use of IL-17 and IL-23 inhibitors for the treatment of psoriasis and other inflammatory conditions, there does not appear to be an increased incidence of deep fungal infections. Physicians, however, should still be cautiously optimistic in prescribing these medications, as there is a theoretical risk for infection for all patients on biologics. A high index of suspicion for patients presenting with symptoms of fungal infections should be maintained, and appropriate diagnosis and management should be initiated if they do occur.

Psoriasis is a common chronic, multisystem, inflammatory disease with predominantly skin and joint manifestations that affects approximately 2% of the world’s population.¹ It occurs in a variety of clinical forms, from a few well-demarcated, erythematous plaques with a silvery scale to involvement of almost the entire body surface area. Beyond the debilitating physical ailments of the disease, psoriasis also may have psychosocial effects on quality of life.² The pathogenesis of psoriasis is not fully understood but represents a complex multifactorial disease with both immune-mediated and genetic components. Characterized by hyperplasia of epidermal keratinocytes, psoriasis is shown to be mediated by infiltration of T-cell lymphocytes with an increase of various inflammatory cytokines, including tumor necrosis factor (TNF) α.³ More recently, interactions of helper T cells (T_H17) via IL-17 and IL-23 have been supported to play a major role in the pathogenesis of psoriasis.^4,5

With the growing understanding of the pathophysiology of psoriasis, focused biologics have been developed to target specific cytokines implicated in the disease process and have been increasingly utilized. Tumor necrosis factor α inhibitors, including adalimumab, infliximab, and etanercept, along with the IL-12/IL-23 inhibitor ustekinumab, have been revolutionary in psoriasis treatment by providing safe and effective long-term therapy; however, there is concern of life-threatening infections with biologics because of the immunosuppressive effects and mechanisms of action.⁶ Specifically, there have been reported cases of deep fungal infections associated with TNF-α inhibitor use.⁷

Recently, the advent of IL-17 and IL-23 inhibitors has garnered notable interest in these biologics as promising treatments for psoriasis. With IL-17 and IL-23 supported to have a major role in the pathogenesis of psoriasis, targeting the cytokine is not only logical but also has proven to be effacacious.^8-10 Secukinumab, ixekizumab, and brodalumab are IL-17 inhibitors that have been approved by the US Food and Drug Administration (FDA) for the treatment of psoriasis. Secukinumab and ixekizumab are anti–IL-17A monoclonal antibodies, whereas brodalumab is an anti–IL-17 receptor antibody. Risankizumab, guselkumab, and tildrakizumab are IL-23 inhibitors that also have been approved by the FDA for the treatment of psoriasis. As with older biologics, there is concern over the safety of these inhibitors because of the central role of IL-17 and IL-23 in both innate and adaptive immune responses, particularly against fungi.¹¹ Therefore, use of biologics targeting IL-17 and IL-23 may increase susceptibility to deep fungal infections.

Safety data and discussion of the risk for deep fungal infections from IL-17, IL-12/IL-23, and IL-23 inhibitor use for psoriasis treatment currently are lacking. Given the knowledge gap, we sought to synthesize and review the current evidence on risks for deep fungal infections during biologic therapy in patients with psoriasis, with a focus on IL-17 inhibitor therapies.

METHODS

A PubMed search of articles indexed for MEDLINE from database inception to 2019 (1946-2019) was performed to find randomized controlled trials (RCTs), including extended trials and clinical trials, for IL-17, IL-12/IL-23, and IL-23 inhibitors approved by the FDA for psoriasis treatment. The following keywords were used: psoriasis or inflammatory disease and secukinumab, ixekizumab, brodalumab, ustekinumab, risankizumab, guselkumab, or tildrakizumab. Studies were restricted to the English-language literature, and those that did not provide adequate safety data on the specific types of infections that occurred were excluded.

RESULTSIL-17 Inhibitors

Our search yielded RCTs, some including extension trials, and clinical trials of IL-17 inhibitors used for psoriatic disease and other nonpsoriatic conditions (Table).

Risk for Deep Fungal Infection With Secukinumab
The queried studies included 20 RCTs or clinical trials along with extension trials of 3746 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 52 weeks. In a 3-year extension study of SCULPTURE, Bissonnette et al¹² reported no new safety concerns for the 340 patients with moderate to severe psoriasis treated with secukinumab. Common adverse events (AEs) included nasopharyngitis, upper respiratory tract infections, and headache, but there were no reports of deep fungal infections.¹² In a subsequent 5-year analysis of 168 patients that focused on the 300-mg fixed interval treatment with secukinumab, the safety profile remained favorable, with 0 reports of invasive fungal infections.¹³ A study (FEATURE) of 118 patients with psoriasis treated with a prefilled syringe of 300 or 150 mg of secukinumab also described an acceptable safety profile and reported no deep fungal infections.¹⁴ JUNCTURE, another study utilizing autoinjectors, also found that treatment with 300 or 150 mg of secukinumab was well tolerated in 121 patients, with no deep fungal infections.¹⁵ Common AEs for both studies included nasopharyngitis and headache.^14,15 A 24-week phase 3 study for scalp psoriasis treated with secukinumab also reported 0 deep fungal infections in 51 patients.¹⁶ In an RCT comparing secukinumab and ustekinumab for moderate to severe plaque psoriasis, Blauvelt et al¹⁷ demonstrated that the incidence of serious AEs was comparable between the 2 groups, with no reports of invasive fungal infections in the 334 patients exposed to secukinumab. The CLEAR study, which compared secukinumab and ustekinumab, also found no reported deep fungal disease in the 335 patients exposed to secukinumab.¹⁸ Secukinumab exhibited a similar safety profile to ustekinumab in both studies, with common AEs being headache and nasopharyngitis.^17,18 The GESTURE study investigated the efficacy of secukinumab in 137 patients with palmoplantar psoriasis and reported a favorable profile with no reports of deep fungal disease.¹⁹ In a subanalysis of the phase 3 study ERASURE, secukinumab was shown to have a robust and sustainable efficacy in 58 Japanese patients with moderate to severe plaque psoriasis, and there were no reports of invasive fungal infections.²⁰ Another subanalysis of 36 Taiwanese patients from the ERASURE study also had similar findings, with no dose relationship observed for AEs.²¹ In a phase 2 study of 103 patients with psoriasis, Papp et al²² demonstrated AE rates that were similar across different doses of secukinumab—3×150 mg, 3×75 mg, 3×25 mg, and 1×25 mg—and described no incidences of invasive fungal disease. In a phase 2 regimen-finding study of 337 patients conducted by Rich et al,²³ the most commonly reported AEs included nasopharyngitis, worsening psoriasis, and upper respiratory tract infections, but there were no reported deep fungal infections.

Our search also resulted in studies specific to the treatment of psoriatic arthritis (PsA) with secukinumab. McInnes et al⁹ conducted a phase 2 proof-of-concept trial for patients with PsA and reported no deep fungal infections in 28 patients exposed to 10 mg/kg of secukinumab. A 2-year follow-up with the cohort from FUTURE 1, a phase 3 clinical trial, also showed no new or unexpected safety signals in 404 patients exposed to 150 or 75 mg of secukinumab, including no reports of invasive fungal disease.²⁴ FUTURE 2, a phase 3 clinical trial, demonstrated that the most common AE was upper respiratory tract infection in the 299 patients treatedwith secukinumab, but there were no recorded invasive fungal infections.²⁵ In FUTURE 3, 277 patients were treated with secukinumab, with 14 nonserious candida infections but no observed deep fungal infections.²⁶ A study comparing secukinumab to fumaric acid esters reported that 6 of 105 patients treated with secukinumab also experienced superficial candidiasis, but there were no reports of deep fungal disease.²⁷

Secukinumab also has been used in the treatment of ankylosing spondylitis in a phase 3 RCT (MEASURE 1) in which 4 cases of superficial candidiasis were reported (0.7 cases per 100 patient-years of secukinumab) that were all resolved with standard antifungal therapy.²⁸ In MEASURE 2, a 5-year phase 3 RCT, 145 patients were treated with secukinumab for ankylosing spondylitis, with common AEs including nasopharyngitis, diarrhea, and upper respiratory tract infection, but there were no reports of any invasive fungal infections.²⁹ MEASURE 3 also demonstrated similar results in which no invasive fungal infections were observed.³⁰

Risk for Deep Fungal Infection With Ixekizumab
The queried studies included 7 RCTs or clinical trials of 3523 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 52 weeks. In UNCOVER-A, a phase 3 RCT of the pharmacokinetics and safety of ixekizumab, 204 patients were randomized to a prefilled syringe or autoinjector; 48% of patients experienced AEs, but no invasive fungal infections were observed.³¹ In an analysis of 3 phase 3 trials of ixekizumab including a total 2334 patients treated with ixekizumab from UNCOVER-1, UNCOVER-2, and UNCOVER-3, oral candidiasis frequently was reported, but no candidal infections met criteria for serious invasive infection.³² In UNCOVER-J, a 52-week phase 3 open-label trial of Japanese patients, 91 patients were treated for plaque psoriasis, erythrodermic psoriasis, or generalized pustular psoriasis using ixekizumab; the most common AEs included allergic reactions and injection-site reactions. One case of oral candidiasis was reported, but there were no reported cases of invasive fungal infections.³³ A comparison of ixekizumab vs ustekinumab from the IXORA-S trial demonstrated no substantial differences in AEs between the two, and no cases of deep fungal infections were reported. The most common AE between the 2 groups was nasopharyngitis.³⁴ An open-label extension over 4 years of a phase 2 RCT treated 211 patients with either 120 or 80 mg of ixekizumab; 87% of patients had experienced at least 1 AE, and all AEs were considered mild or moderate in severity, with no invasive fungal disease.³⁵

Our search also resulted in 1 study specific to the treatment of PsA with ixekizumab. A phase 3, 52-week study of patients treated with ixekizumab for PsA observed 2 incidences of oral candidiasis and nail candida infections, but no invasive fungal infections were reported.³⁶

We also found 1 study of ixekizumab used in the treatment of ankylosing spondylitis. COAST-V was a phase 3 RCT of patients treated for ankylosing spondylitis in which 164 patients were treated with ixekizumab; no serious AEs were recorded, including 0 deep fungal infections. The most common AEs observed were nasopharyngitis and upper respiratory tract infections.³⁷

Risk for Deep Fungal Infection With Brodalumab
The queried studies included 9 RCTs and 3 clinical trials along with extension trials of 1599 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 120 weeks. In a phase 2 RCT of Japanese patients with moderate to severe plaque psoriasis, 113 patients were treated with 70, 140, or 210 mg of brodalumab, and the most common AEs were nasopharyngitis, diarrhea, and upper respiratory tract inflammation. There were no reported cases of fungal infections in the study.³⁸ In an open-label extension study of Japanese patients that evaluated the long-term clinical safety of brodalumab, 145 patients were enrolled and observed similar AEs to the RCT, with 7 patients experiencing oral candidiasis and 1 patient having skin candidiasis, but there were no observed deep fungal infections.³⁹ In AMG 827, which evaluated the efficacy and safety of brodalumab, 320 patients were treated, and only 2 serious AEs were reported, neither of which were deep fungal disease.¹⁰ A phase 3 RCT conducted by Papp et al⁴⁰ (AMAGINE-1) also treated 441 patients with moderate to severe plaque psoriasis with brodalumab and observed candida infections in 9 patients that were mild to moderate and responsive to treatment, with no patients discontinuing the study. In a 120-week open-label extension study of 181 patients, Papp et al⁴¹ reported 8% of patients experienced serious AEs, with 1 case of latent tuberculosis that led to withdrawal of treatment. A study also investigated the efficacy and safety of brodalumab in 30 patients with generalized pustular psoriasis or psoriatic erythroderma and observed 2 cases of mild candida infections that resolved with treatment. There were no reports of invasive fungal disease.⁴²

Our search also resulted in studies of brodalumab used in the treatment of PsA and nonpsoriatic diseases. In one phase 2 RCT, 113 patients with PsA were treated with 140 mg, 280 mg, or combined doses of brodalumab, with the most common AEs being nasopharyngitis, upper respiratory tract infection, and diarrhea, but there were no reports of deep fungal infection.⁴³ In a phase 1b trial of patients with methotrexate-resistant rheumatoid arthritis treated with brodalumab, common AEs reported included headache, cough, and abdominal pain, with only 1 case of oral candidiasis that was determined not to be drug related.⁴⁴ Finally, an RCT of patients with moderate to severe asthma treated 226 patients with brodalumab and reported a greater incidence of oral candidiasis in treatment groups compared with placebo (3.5% vs 0%) but saw no instances of invasive fungal infection.⁴⁵

IL-12/IL-23 Inhibitor

Risk for Deep Fungal Infection With Ustekinumab
The queried studies included 4 RCTs of 954 patients with psoriasis treated with ustekinumab (eTable).^46-49 Within these trials, there were no reported cases of serious infections involving deep fungal organisms during the stated follow-up period. The literature search also found long-term safety data from the ACCEPT and PHOENIX trials that included 5437 patients with psoriasis treated with ustekinumab.^66,67 There also were no demonstrated incidences of invasive fungal disease in these studies, with most cases of infection being common bacterial or viral infections.

IL-23 Inhibitors

Risk for Deep Fungal Infection With Risankizumab, Guselkumab, and Tildrakizumab
The queried studies included 16 RCTs or clinical trials for psoriatic patients treated with IL-23 inhibitors, including 5 with risankizumab,^50-54 9 with guselkumab,^55-63 and 2 with tildrakizumab.^64,65 Within these trials there were no observed cases of serious infections with deep fungal disease.

COMMENT

Our literature review has demonstrated that there does not appear to be an increased incidence of deep fungal infections for patients treated with IL-17, IL-12/IL-23, or IL-23 inhibitors for psoriatic disease. All of the reviewed studies found no cases of invasive fungal infections for patients with psoriasis treated with secukinumab, ixekizumab, brodalumab, ustekinumab, risankizumab, guselkumab, or tildrakizumab. Patients with other inflammatory conditions, such as ankylosing spondylitis, rheumatoid arthritis, and asthma, also did not appear to show an increased incidence of deep fungal disease.

Although these results show promising safety data for the use of these biologic therapies in treating inflammatory conditions, caution still is warranted, as these medications still are relatively new, with FDA approvals within the last 5 years. Safety data among different study populations also cannot be derived without further investigation, and much of the available literature is limited in long-term data. More extended trials or registry data from a large, broadly representative cohort are necessary to establish the long-term safety and risk for deep fungal infections with IL-17 and especially the newer IL-23 inhibitors.

A small percentage of patients from the reviewed literature did develop superficial candidiasis. This outcome can be expected, as the central role of IL-17 and IL-23 has been recognized in immunologic protection against infections, specifically against fungi.¹¹ Because all of the fungal infections reported for patients on IL-17 inhibitors were superficial candidiasis, guides for practical management and treatment should be implemented to standardize future research and care. A proposed screening algorithm for patients on these biologic therapies involves safety monitoring, including inspection of the oral cavity, folds, and genitals, along with inquiring about symptoms such as burning, dysgeusia, and dysuria.⁶⁸ If infection is suspected, confirmation by culture, molecular method, or optimally with esophagoscopy can be performed, and appropriate treatment may be initiated.⁶⁸ Patients with candida infections of the oral cavity, folds, or genitals can be placed on topical therapy such as nystatin, amphotericin B, ciclopirox, or other azoles, while those with infections of the esophagus can be started on oral fluconazole.⁶⁸

Although there were no reported cases of deep fungal infections, the theoretical risk for developing one while on IL-17 and IL-23 inhibitors may warrant further screening prior to beginning therapy. The TNF inhibitors approved for the treatment of psoriasis currently contain a black box warning for risk for disseminated and extrapulmonary histoplasmosis, coccidioidomycosis, blastomycosis, and other invasive fungal infections, which may highlight the importance of thorough evaluation and awareness of endemic areas for patients on biologics. Prior to initiating treatment with TNF inhibitors, current suggestions involve performing a thorough examination along with keeping a high index of suspicion for invasive fungal infections in patients who live in or have traveled to endemic regions.⁶⁹

Screening for invasive fungal infections for patients on TNF inhibitors involves questioning about potential exposures, such as demolition of old buildings, bird roosts, or spelunking.⁷⁰ Serologies or antigen testing can be used routinely, but as these tests are insensitive, empiric antifungal therapy should be initiated if there is high enough clinical suspicion.⁷¹ Currently, there are no clinical guidelines regarding fungal screening and initiation of IL-17 and IL-23 inhibitors for treatment of psoriasis and other inflammatory conditions, but careful stewardship over using these effective medications should still be practiced.

Upon review of the available safety data on the use of IL-17 and IL-23 inhibitors for the treatment of psoriasis and other inflammatory conditions, there does not appear to be an increased incidence of deep fungal infections. Physicians, however, should still be cautiously optimistic in prescribing these medications, as there is a theoretical risk for infection for all patients on biologics. A high index of suspicion for patients presenting with symptoms of fungal infections should be maintained, and appropriate diagnosis and management should be initiated if they do occur.

Psoriasis is a common chronic, multisystem, inflammatory disease with predominantly skin and joint manifestations that affects approximately 2% of the world’s population.¹ It occurs in a variety of clinical forms, from a few well-demarcated, erythematous plaques with a silvery scale to involvement of almost the entire body surface area. Beyond the debilitating physical ailments of the disease, psoriasis also may have psychosocial effects on quality of life.² The pathogenesis of psoriasis is not fully understood but represents a complex multifactorial disease with both immune-mediated and genetic components. Characterized by hyperplasia of epidermal keratinocytes, psoriasis is shown to be mediated by infiltration of T-cell lymphocytes with an increase of various inflammatory cytokines, including tumor necrosis factor (TNF) α.³ More recently, interactions of helper T cells (T_H17) via IL-17 and IL-23 have been supported to play a major role in the pathogenesis of psoriasis.^4,5

With the growing understanding of the pathophysiology of psoriasis, focused biologics have been developed to target specific cytokines implicated in the disease process and have been increasingly utilized. Tumor necrosis factor α inhibitors, including adalimumab, infliximab, and etanercept, along with the IL-12/IL-23 inhibitor ustekinumab, have been revolutionary in psoriasis treatment by providing safe and effective long-term therapy; however, there is concern of life-threatening infections with biologics because of the immunosuppressive effects and mechanisms of action.⁶ Specifically, there have been reported cases of deep fungal infections associated with TNF-α inhibitor use.⁷

Recently, the advent of IL-17 and IL-23 inhibitors has garnered notable interest in these biologics as promising treatments for psoriasis. With IL-17 and IL-23 supported to have a major role in the pathogenesis of psoriasis, targeting the cytokine is not only logical but also has proven to be effacacious.^8-10 Secukinumab, ixekizumab, and brodalumab are IL-17 inhibitors that have been approved by the US Food and Drug Administration (FDA) for the treatment of psoriasis. Secukinumab and ixekizumab are anti–IL-17A monoclonal antibodies, whereas brodalumab is an anti–IL-17 receptor antibody. Risankizumab, guselkumab, and tildrakizumab are IL-23 inhibitors that also have been approved by the FDA for the treatment of psoriasis. As with older biologics, there is concern over the safety of these inhibitors because of the central role of IL-17 and IL-23 in both innate and adaptive immune responses, particularly against fungi.¹¹ Therefore, use of biologics targeting IL-17 and IL-23 may increase susceptibility to deep fungal infections.

Safety data and discussion of the risk for deep fungal infections from IL-17, IL-12/IL-23, and IL-23 inhibitor use for psoriasis treatment currently are lacking. Given the knowledge gap, we sought to synthesize and review the current evidence on risks for deep fungal infections during biologic therapy in patients with psoriasis, with a focus on IL-17 inhibitor therapies.

METHODS

A PubMed search of articles indexed for MEDLINE from database inception to 2019 (1946-2019) was performed to find randomized controlled trials (RCTs), including extended trials and clinical trials, for IL-17, IL-12/IL-23, and IL-23 inhibitors approved by the FDA for psoriasis treatment. The following keywords were used: psoriasis or inflammatory disease and secukinumab, ixekizumab, brodalumab, ustekinumab, risankizumab, guselkumab, or tildrakizumab. Studies were restricted to the English-language literature, and those that did not provide adequate safety data on the specific types of infections that occurred were excluded.

RESULTSIL-17 Inhibitors

Our search yielded RCTs, some including extension trials, and clinical trials of IL-17 inhibitors used for psoriatic disease and other nonpsoriatic conditions (Table).

Risk for Deep Fungal Infection With Secukinumab
The queried studies included 20 RCTs or clinical trials along with extension trials of 3746 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 52 weeks. In a 3-year extension study of SCULPTURE, Bissonnette et al¹² reported no new safety concerns for the 340 patients with moderate to severe psoriasis treated with secukinumab. Common adverse events (AEs) included nasopharyngitis, upper respiratory tract infections, and headache, but there were no reports of deep fungal infections.¹² In a subsequent 5-year analysis of 168 patients that focused on the 300-mg fixed interval treatment with secukinumab, the safety profile remained favorable, with 0 reports of invasive fungal infections.¹³ A study (FEATURE) of 118 patients with psoriasis treated with a prefilled syringe of 300 or 150 mg of secukinumab also described an acceptable safety profile and reported no deep fungal infections.¹⁴ JUNCTURE, another study utilizing autoinjectors, also found that treatment with 300 or 150 mg of secukinumab was well tolerated in 121 patients, with no deep fungal infections.¹⁵ Common AEs for both studies included nasopharyngitis and headache.^14,15 A 24-week phase 3 study for scalp psoriasis treated with secukinumab also reported 0 deep fungal infections in 51 patients.¹⁶ In an RCT comparing secukinumab and ustekinumab for moderate to severe plaque psoriasis, Blauvelt et al¹⁷ demonstrated that the incidence of serious AEs was comparable between the 2 groups, with no reports of invasive fungal infections in the 334 patients exposed to secukinumab. The CLEAR study, which compared secukinumab and ustekinumab, also found no reported deep fungal disease in the 335 patients exposed to secukinumab.¹⁸ Secukinumab exhibited a similar safety profile to ustekinumab in both studies, with common AEs being headache and nasopharyngitis.^17,18 The GESTURE study investigated the efficacy of secukinumab in 137 patients with palmoplantar psoriasis and reported a favorable profile with no reports of deep fungal disease.¹⁹ In a subanalysis of the phase 3 study ERASURE, secukinumab was shown to have a robust and sustainable efficacy in 58 Japanese patients with moderate to severe plaque psoriasis, and there were no reports of invasive fungal infections.²⁰ Another subanalysis of 36 Taiwanese patients from the ERASURE study also had similar findings, with no dose relationship observed for AEs.²¹ In a phase 2 study of 103 patients with psoriasis, Papp et al²² demonstrated AE rates that were similar across different doses of secukinumab—3×150 mg, 3×75 mg, 3×25 mg, and 1×25 mg—and described no incidences of invasive fungal disease. In a phase 2 regimen-finding study of 337 patients conducted by Rich et al,²³ the most commonly reported AEs included nasopharyngitis, worsening psoriasis, and upper respiratory tract infections, but there were no reported deep fungal infections.

Our search also resulted in studies specific to the treatment of psoriatic arthritis (PsA) with secukinumab. McInnes et al⁹ conducted a phase 2 proof-of-concept trial for patients with PsA and reported no deep fungal infections in 28 patients exposed to 10 mg/kg of secukinumab. A 2-year follow-up with the cohort from FUTURE 1, a phase 3 clinical trial, also showed no new or unexpected safety signals in 404 patients exposed to 150 or 75 mg of secukinumab, including no reports of invasive fungal disease.²⁴ FUTURE 2, a phase 3 clinical trial, demonstrated that the most common AE was upper respiratory tract infection in the 299 patients treatedwith secukinumab, but there were no recorded invasive fungal infections.²⁵ In FUTURE 3, 277 patients were treated with secukinumab, with 14 nonserious candida infections but no observed deep fungal infections.²⁶ A study comparing secukinumab to fumaric acid esters reported that 6 of 105 patients treated with secukinumab also experienced superficial candidiasis, but there were no reports of deep fungal disease.²⁷

Secukinumab also has been used in the treatment of ankylosing spondylitis in a phase 3 RCT (MEASURE 1) in which 4 cases of superficial candidiasis were reported (0.7 cases per 100 patient-years of secukinumab) that were all resolved with standard antifungal therapy.²⁸ In MEASURE 2, a 5-year phase 3 RCT, 145 patients were treated with secukinumab for ankylosing spondylitis, with common AEs including nasopharyngitis, diarrhea, and upper respiratory tract infection, but there were no reports of any invasive fungal infections.²⁹ MEASURE 3 also demonstrated similar results in which no invasive fungal infections were observed.³⁰

Risk for Deep Fungal Infection With Ixekizumab
The queried studies included 7 RCTs or clinical trials of 3523 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 52 weeks. In UNCOVER-A, a phase 3 RCT of the pharmacokinetics and safety of ixekizumab, 204 patients were randomized to a prefilled syringe or autoinjector; 48% of patients experienced AEs, but no invasive fungal infections were observed.³¹ In an analysis of 3 phase 3 trials of ixekizumab including a total 2334 patients treated with ixekizumab from UNCOVER-1, UNCOVER-2, and UNCOVER-3, oral candidiasis frequently was reported, but no candidal infections met criteria for serious invasive infection.³² In UNCOVER-J, a 52-week phase 3 open-label trial of Japanese patients, 91 patients were treated for plaque psoriasis, erythrodermic psoriasis, or generalized pustular psoriasis using ixekizumab; the most common AEs included allergic reactions and injection-site reactions. One case of oral candidiasis was reported, but there were no reported cases of invasive fungal infections.³³ A comparison of ixekizumab vs ustekinumab from the IXORA-S trial demonstrated no substantial differences in AEs between the two, and no cases of deep fungal infections were reported. The most common AE between the 2 groups was nasopharyngitis.³⁴ An open-label extension over 4 years of a phase 2 RCT treated 211 patients with either 120 or 80 mg of ixekizumab; 87% of patients had experienced at least 1 AE, and all AEs were considered mild or moderate in severity, with no invasive fungal disease.³⁵

Our search also resulted in 1 study specific to the treatment of PsA with ixekizumab. A phase 3, 52-week study of patients treated with ixekizumab for PsA observed 2 incidences of oral candidiasis and nail candida infections, but no invasive fungal infections were reported.³⁶

We also found 1 study of ixekizumab used in the treatment of ankylosing spondylitis. COAST-V was a phase 3 RCT of patients treated for ankylosing spondylitis in which 164 patients were treated with ixekizumab; no serious AEs were recorded, including 0 deep fungal infections. The most common AEs observed were nasopharyngitis and upper respiratory tract infections.³⁷

Risk for Deep Fungal Infection With Brodalumab
The queried studies included 9 RCTs and 3 clinical trials along with extension trials of 1599 patients with psoriasis or other inflammatory conditions, with follow-up ranging from 12 to 120 weeks. In a phase 2 RCT of Japanese patients with moderate to severe plaque psoriasis, 113 patients were treated with 70, 140, or 210 mg of brodalumab, and the most common AEs were nasopharyngitis, diarrhea, and upper respiratory tract inflammation. There were no reported cases of fungal infections in the study.³⁸ In an open-label extension study of Japanese patients that evaluated the long-term clinical safety of brodalumab, 145 patients were enrolled and observed similar AEs to the RCT, with 7 patients experiencing oral candidiasis and 1 patient having skin candidiasis, but there were no observed deep fungal infections.³⁹ In AMG 827, which evaluated the efficacy and safety of brodalumab, 320 patients were treated, and only 2 serious AEs were reported, neither of which were deep fungal disease.¹⁰ A phase 3 RCT conducted by Papp et al⁴⁰ (AMAGINE-1) also treated 441 patients with moderate to severe plaque psoriasis with brodalumab and observed candida infections in 9 patients that were mild to moderate and responsive to treatment, with no patients discontinuing the study. In a 120-week open-label extension study of 181 patients, Papp et al⁴¹ reported 8% of patients experienced serious AEs, with 1 case of latent tuberculosis that led to withdrawal of treatment. A study also investigated the efficacy and safety of brodalumab in 30 patients with generalized pustular psoriasis or psoriatic erythroderma and observed 2 cases of mild candida infections that resolved with treatment. There were no reports of invasive fungal disease.⁴²

Our search also resulted in studies of brodalumab used in the treatment of PsA and nonpsoriatic diseases. In one phase 2 RCT, 113 patients with PsA were treated with 140 mg, 280 mg, or combined doses of brodalumab, with the most common AEs being nasopharyngitis, upper respiratory tract infection, and diarrhea, but there were no reports of deep fungal infection.⁴³ In a phase 1b trial of patients with methotrexate-resistant rheumatoid arthritis treated with brodalumab, common AEs reported included headache, cough, and abdominal pain, with only 1 case of oral candidiasis that was determined not to be drug related.⁴⁴ Finally, an RCT of patients with moderate to severe asthma treated 226 patients with brodalumab and reported a greater incidence of oral candidiasis in treatment groups compared with placebo (3.5% vs 0%) but saw no instances of invasive fungal infection.⁴⁵

IL-12/IL-23 Inhibitor

Risk for Deep Fungal Infection With Ustekinumab
The queried studies included 4 RCTs of 954 patients with psoriasis treated with ustekinumab (eTable).^46-49 Within these trials, there were no reported cases of serious infections involving deep fungal organisms during the stated follow-up period. The literature search also found long-term safety data from the ACCEPT and PHOENIX trials that included 5437 patients with psoriasis treated with ustekinumab.^66,67 There also were no demonstrated incidences of invasive fungal disease in these studies, with most cases of infection being common bacterial or viral infections.

IL-23 Inhibitors

Risk for Deep Fungal Infection With Risankizumab, Guselkumab, and Tildrakizumab
The queried studies included 16 RCTs or clinical trials for psoriatic patients treated with IL-23 inhibitors, including 5 with risankizumab,^50-54 9 with guselkumab,^55-63 and 2 with tildrakizumab.^64,65 Within these trials there were no observed cases of serious infections with deep fungal disease.

COMMENT

Our literature review has demonstrated that there does not appear to be an increased incidence of deep fungal infections for patients treated with IL-17, IL-12/IL-23, or IL-23 inhibitors for psoriatic disease. All of the reviewed studies found no cases of invasive fungal infections for patients with psoriasis treated with secukinumab, ixekizumab, brodalumab, ustekinumab, risankizumab, guselkumab, or tildrakizumab. Patients with other inflammatory conditions, such as ankylosing spondylitis, rheumatoid arthritis, and asthma, also did not appear to show an increased incidence of deep fungal disease.

Although these results show promising safety data for the use of these biologic therapies in treating inflammatory conditions, caution still is warranted, as these medications still are relatively new, with FDA approvals within the last 5 years. Safety data among different study populations also cannot be derived without further investigation, and much of the available literature is limited in long-term data. More extended trials or registry data from a large, broadly representative cohort are necessary to establish the long-term safety and risk for deep fungal infections with IL-17 and especially the newer IL-23 inhibitors.

A small percentage of patients from the reviewed literature did develop superficial candidiasis. This outcome can be expected, as the central role of IL-17 and IL-23 has been recognized in immunologic protection against infections, specifically against fungi.¹¹ Because all of the fungal infections reported for patients on IL-17 inhibitors were superficial candidiasis, guides for practical management and treatment should be implemented to standardize future research and care. A proposed screening algorithm for patients on these biologic therapies involves safety monitoring, including inspection of the oral cavity, folds, and genitals, along with inquiring about symptoms such as burning, dysgeusia, and dysuria.⁶⁸ If infection is suspected, confirmation by culture, molecular method, or optimally with esophagoscopy can be performed, and appropriate treatment may be initiated.⁶⁸ Patients with candida infections of the oral cavity, folds, or genitals can be placed on topical therapy such as nystatin, amphotericin B, ciclopirox, or other azoles, while those with infections of the esophagus can be started on oral fluconazole.⁶⁸

Although there were no reported cases of deep fungal infections, the theoretical risk for developing one while on IL-17 and IL-23 inhibitors may warrant further screening prior to beginning therapy. The TNF inhibitors approved for the treatment of psoriasis currently contain a black box warning for risk for disseminated and extrapulmonary histoplasmosis, coccidioidomycosis, blastomycosis, and other invasive fungal infections, which may highlight the importance of thorough evaluation and awareness of endemic areas for patients on biologics. Prior to initiating treatment with TNF inhibitors, current suggestions involve performing a thorough examination along with keeping a high index of suspicion for invasive fungal infections in patients who live in or have traveled to endemic regions.⁶⁹

Screening for invasive fungal infections for patients on TNF inhibitors involves questioning about potential exposures, such as demolition of old buildings, bird roosts, or spelunking.⁷⁰ Serologies or antigen testing can be used routinely, but as these tests are insensitive, empiric antifungal therapy should be initiated if there is high enough clinical suspicion.⁷¹ Currently, there are no clinical guidelines regarding fungal screening and initiation of IL-17 and IL-23 inhibitors for treatment of psoriasis and other inflammatory conditions, but careful stewardship over using these effective medications should still be practiced.

Upon review of the available safety data on the use of IL-17 and IL-23 inhibitors for the treatment of psoriasis and other inflammatory conditions, there does not appear to be an increased incidence of deep fungal infections. Physicians, however, should still be cautiously optimistic in prescribing these medications, as there is a theoretical risk for infection for all patients on biologics. A high index of suspicion for patients presenting with symptoms of fungal infections should be maintained, and appropriate diagnosis and management should be initiated if they do occur.