Lucy Hicks

A new analysis from the Centers for Disease Control and Prevention provides further details on mysterious cases of pediatric hepatitis identified across the United States. While 45% of patients have tested positive for adenovirus infection, it is likely that these children “represent a heterogenous group of hepatitis etiologies,” the CDC authors wrote.

Of the 296 children diagnosed between Oct. 1, 2021, and June 15, 2022, in the United States, 18 have required liver transplants and 11 have died.

On April 21, 2022, the CDC issued an alert to providers to report pediatric hepatitis cases of unknown etiology in children under 10 after similar cases had been identified in Europe and the United States. While the United Kingdom has found an uptick in cases over the past year, researchers from the CDC published data on June 14 that suggested pediatric hepatitis cases had not increased from 2017 to 2021.

This newest analysis, published Morbidity and Mortality Weekly Report, provides additional demographic data on affected patients and explores possible causes, including previous infection with COVID-19. Investigators had earlier ruled out COVID-19 vaccination as a potential factor in these cases, as most children were unvaccinated or not yet eligible to receive the vaccine. According to the analysis, only five patients had received at least one dose of a COVID-19 vaccine.

The 296 cases included in the analysis occurred in 42 U.S. states and territories, and the median age for patients was 2 years and 2 months. Nearly 60% of patients were male (58.1%) and 40.9% were female. The largest percentage of cases occurred in Hispanic or Latino children (37.8%), followed by non-Hispanic White (32.4%) children. Black patients made up 9.8% of all cases, and 3.7% of affected children were of Asian descent. Vomiting, fatigue, and jaundice were all common symptoms, and about 90% (89.9%) of children required hospitalization..

Of 224 children tested for adenovirus, 44.6% were positive. The analysis also included information on 123 of these hepatitis patients tested for other various pathogens. Nearly 80% (98/123) received a COVID-19 test and just 10.2% were positive. About 26% of patients had previously had COVID-19, and hepatitis onset occurred, on average, 133 days after the reported SARS-CoV-2 infection.

Other viruses detected included rhinovirus/enterovirus (24.5%), rotavirus (14.0%), and acute Epstein-Barr virus (11.4%)

Simultaneous infection with SARS-CoV-2 and adenovirus occurred in three patients.

There was no evidence of viral inclusions in the 36 patients who had pathological evaluation liver biopsies, explants, or autopsied tissue.

The findings suggest that there may be many different causes behind these severe hepatitis cases, and it is estimated that about one-third of hepatitis cases in children do not have a known cause. However, the identification of adenovirus infection in many cases “raises the question whether a new pattern of disease is emerging in this population or if adenovirus might be an underrecognized cause or cofactor in previously indeterminate cases of pediatric hepatitis,” the authors wrote. As the investigation continues, “further clinical data are needed to understand the cause of these cases and to assess the potential association with adenovirus.”

A version of this article first appeared on Medscape.com.

A new analysis from the Centers for Disease Control and Prevention provides further details on mysterious cases of pediatric hepatitis identified across the United States. While 45% of patients have tested positive for adenovirus infection, it is likely that these children “represent a heterogenous group of hepatitis etiologies,” the CDC authors wrote.

Of the 296 children diagnosed between Oct. 1, 2021, and June 15, 2022, in the United States, 18 have required liver transplants and 11 have died.

On April 21, 2022, the CDC issued an alert to providers to report pediatric hepatitis cases of unknown etiology in children under 10 after similar cases had been identified in Europe and the United States. While the United Kingdom has found an uptick in cases over the past year, researchers from the CDC published data on June 14 that suggested pediatric hepatitis cases had not increased from 2017 to 2021.

This newest analysis, published Morbidity and Mortality Weekly Report, provides additional demographic data on affected patients and explores possible causes, including previous infection with COVID-19. Investigators had earlier ruled out COVID-19 vaccination as a potential factor in these cases, as most children were unvaccinated or not yet eligible to receive the vaccine. According to the analysis, only five patients had received at least one dose of a COVID-19 vaccine.

The 296 cases included in the analysis occurred in 42 U.S. states and territories, and the median age for patients was 2 years and 2 months. Nearly 60% of patients were male (58.1%) and 40.9% were female. The largest percentage of cases occurred in Hispanic or Latino children (37.8%), followed by non-Hispanic White (32.4%) children. Black patients made up 9.8% of all cases, and 3.7% of affected children were of Asian descent. Vomiting, fatigue, and jaundice were all common symptoms, and about 90% (89.9%) of children required hospitalization..

Of 224 children tested for adenovirus, 44.6% were positive. The analysis also included information on 123 of these hepatitis patients tested for other various pathogens. Nearly 80% (98/123) received a COVID-19 test and just 10.2% were positive. About 26% of patients had previously had COVID-19, and hepatitis onset occurred, on average, 133 days after the reported SARS-CoV-2 infection.

Other viruses detected included rhinovirus/enterovirus (24.5%), rotavirus (14.0%), and acute Epstein-Barr virus (11.4%)

Simultaneous infection with SARS-CoV-2 and adenovirus occurred in three patients.

There was no evidence of viral inclusions in the 36 patients who had pathological evaluation liver biopsies, explants, or autopsied tissue.

The findings suggest that there may be many different causes behind these severe hepatitis cases, and it is estimated that about one-third of hepatitis cases in children do not have a known cause. However, the identification of adenovirus infection in many cases “raises the question whether a new pattern of disease is emerging in this population or if adenovirus might be an underrecognized cause or cofactor in previously indeterminate cases of pediatric hepatitis,” the authors wrote. As the investigation continues, “further clinical data are needed to understand the cause of these cases and to assess the potential association with adenovirus.”

A version of this article first appeared on Medscape.com.

A new analysis from the Centers for Disease Control and Prevention provides further details on mysterious cases of pediatric hepatitis identified across the United States. While 45% of patients have tested positive for adenovirus infection, it is likely that these children “represent a heterogenous group of hepatitis etiologies,” the CDC authors wrote.

Of the 296 children diagnosed between Oct. 1, 2021, and June 15, 2022, in the United States, 18 have required liver transplants and 11 have died.

On April 21, 2022, the CDC issued an alert to providers to report pediatric hepatitis cases of unknown etiology in children under 10 after similar cases had been identified in Europe and the United States. While the United Kingdom has found an uptick in cases over the past year, researchers from the CDC published data on June 14 that suggested pediatric hepatitis cases had not increased from 2017 to 2021.

This newest analysis, published Morbidity and Mortality Weekly Report, provides additional demographic data on affected patients and explores possible causes, including previous infection with COVID-19. Investigators had earlier ruled out COVID-19 vaccination as a potential factor in these cases, as most children were unvaccinated or not yet eligible to receive the vaccine. According to the analysis, only five patients had received at least one dose of a COVID-19 vaccine.

The 296 cases included in the analysis occurred in 42 U.S. states and territories, and the median age for patients was 2 years and 2 months. Nearly 60% of patients were male (58.1%) and 40.9% were female. The largest percentage of cases occurred in Hispanic or Latino children (37.8%), followed by non-Hispanic White (32.4%) children. Black patients made up 9.8% of all cases, and 3.7% of affected children were of Asian descent. Vomiting, fatigue, and jaundice were all common symptoms, and about 90% (89.9%) of children required hospitalization..

Of 224 children tested for adenovirus, 44.6% were positive. The analysis also included information on 123 of these hepatitis patients tested for other various pathogens. Nearly 80% (98/123) received a COVID-19 test and just 10.2% were positive. About 26% of patients had previously had COVID-19, and hepatitis onset occurred, on average, 133 days after the reported SARS-CoV-2 infection.

Other viruses detected included rhinovirus/enterovirus (24.5%), rotavirus (14.0%), and acute Epstein-Barr virus (11.4%)

Simultaneous infection with SARS-CoV-2 and adenovirus occurred in three patients.

There was no evidence of viral inclusions in the 36 patients who had pathological evaluation liver biopsies, explants, or autopsied tissue.

The findings suggest that there may be many different causes behind these severe hepatitis cases, and it is estimated that about one-third of hepatitis cases in children do not have a known cause. However, the identification of adenovirus infection in many cases “raises the question whether a new pattern of disease is emerging in this population or if adenovirus might be an underrecognized cause or cofactor in previously indeterminate cases of pediatric hepatitis,” the authors wrote. As the investigation continues, “further clinical data are needed to understand the cause of these cases and to assess the potential association with adenovirus.”

A version of this article first appeared on Medscape.com.

There may be a link between the recent unexplained cases of hepatitis in children and prior coronavirus infections, according to new research from Israel.

The study involves five children in Israel who had mild cases of COVID-19 who went on to develop hepatitis; two of these children required liver transplants. But clinicians are cautious about drawing conclusions from such a small study.

“All you can say is that these five cases seem to have proximity to COVID-19, and COVID-19 may be able to cause pediatric liver complications,” said Nancy Reau, MD, section chief of hepatology at Rush University in Chicago. She was not involved with the study.

While COVID-19 could be one explanation for these hepatitis cases, it is also possible that the two are unrelated, said William Balistreri, MD, director emeritus of the Pediatric Liver Care Center at Cincinnati Children’s Hospital Medical Center. He also is unaffiliated with the study.

Hepatitis is rare in children, and between 30% and 50% of these pediatric cases have no known cause, according to the CDC.

Since April 2022, children with hepatitis of an unexplained cause have garnered global attention. The United Kingdom now has 240 confirmed cases, the United States is investigating 290 cases, and Israel has reported 12 cases to the World Health Organization. Many investigators think that these liver problems could be related to adenovirus – a common infection in children that normally causes cold or flu-like symptoms – because more than half of global cases tested for the virus have been positive, according to the WHO. About 12% of children with unexplained hepatitis have tested positive for SARS-CoV-2, the virus that causes COVID-19, but investigators are considering the possibility that some cases may be related to prior infections.

The study documents five patients, 3-months to 13 years old, with prior  coronavirus infection who later developed hepatitis. All were treated at Schneider Children’s Medical Hospital in Petah Tikva, Israel, during 2021. The paper was published in the Journal of Pediatric Gastroenterology and Nutrition. Two patients, a 3-month-old and 5-month-old, needed liver transplants. The other three patients (two 8-year-olds and a 13-year-old) were treated with steroids. None of the five children had received any vaccinations against COVID-19. The time between COVID-19 infection and liver problems ranged from 21 to 130 days.

“It took time to be convinced that this could be COVID-related,” said senior study author Orith Waisbourd-Zinman, MD, director of pediatric liver disease service at Schneider Children’s Medical Hospital. “It’s something that wasn’t described.”

Sudden-onset hepatitis after COVID-19 has been recorded in adults, and the virus has been associated with multisystem inflammatory syndrome in children (MIS-C). The condition causes inflammation through the body, including the heart, lungs, and kidneys.

“We know that COVID can be mischievous, and children are no more exempt from that than adults,” Dr. Reau said.

Liver samples taken from these five patients did not test positive for COVID-19, similar to how liver samples have tested negative for adenovirus in more recent hepatitis cases around the world. Dr. Waisbourd-Zinman suggested that in these patients, hepatitis may have been brought on by an inflammatory response that was triggered by the virus. 

Still, there are notable differences between these five cases and current cases internationally. These five children became sick during the period of December 2020 to September 2021, whereas all current counted cases in the United Kingdom occurred after January 2022. The first cases in the United States took place in October 2021. It could be that there were similar hepatitis cases before that were not identified, Dr. Reau said.

The ages of the Israeli children with hepatitis also differ from the cases seen globally. More than three-fourths of these reported hepatitis cases occurred in children under 5, the WHO reports, though affected individuals have been as young as 1-month-old up to 16 years old. In the United Kingdom, which accounts for about a third of cases reported to the WHO, most children with unexplained hepatitis have been between 3 and 5 years old.

More research is needed to tease out any relationship between prior COVID-19 infection and liver inflammation, Dr. Balistreri said.

“I’m not sure what to make of any of it yet. We know that SARS-CoV-2 can alter immune responses ... so it wouldn’t surprise me,” if COVID-19 and these hepatitis cases were linked, he said. “It’s just that we need more information.”

A version of this article first appeared on WebMD.com.

There may be a link between the recent unexplained cases of hepatitis in children and prior coronavirus infections, according to new research from Israel.

The study involves five children in Israel who had mild cases of COVID-19 who went on to develop hepatitis; two of these children required liver transplants. But clinicians are cautious about drawing conclusions from such a small study.

“All you can say is that these five cases seem to have proximity to COVID-19, and COVID-19 may be able to cause pediatric liver complications,” said Nancy Reau, MD, section chief of hepatology at Rush University in Chicago. She was not involved with the study.

While COVID-19 could be one explanation for these hepatitis cases, it is also possible that the two are unrelated, said William Balistreri, MD, director emeritus of the Pediatric Liver Care Center at Cincinnati Children’s Hospital Medical Center. He also is unaffiliated with the study.

Hepatitis is rare in children, and between 30% and 50% of these pediatric cases have no known cause, according to the CDC.

Since April 2022, children with hepatitis of an unexplained cause have garnered global attention. The United Kingdom now has 240 confirmed cases, the United States is investigating 290 cases, and Israel has reported 12 cases to the World Health Organization. Many investigators think that these liver problems could be related to adenovirus – a common infection in children that normally causes cold or flu-like symptoms – because more than half of global cases tested for the virus have been positive, according to the WHO. About 12% of children with unexplained hepatitis have tested positive for SARS-CoV-2, the virus that causes COVID-19, but investigators are considering the possibility that some cases may be related to prior infections.

The study documents five patients, 3-months to 13 years old, with prior  coronavirus infection who later developed hepatitis. All were treated at Schneider Children’s Medical Hospital in Petah Tikva, Israel, during 2021. The paper was published in the Journal of Pediatric Gastroenterology and Nutrition. Two patients, a 3-month-old and 5-month-old, needed liver transplants. The other three patients (two 8-year-olds and a 13-year-old) were treated with steroids. None of the five children had received any vaccinations against COVID-19. The time between COVID-19 infection and liver problems ranged from 21 to 130 days.

“It took time to be convinced that this could be COVID-related,” said senior study author Orith Waisbourd-Zinman, MD, director of pediatric liver disease service at Schneider Children’s Medical Hospital. “It’s something that wasn’t described.”

Sudden-onset hepatitis after COVID-19 has been recorded in adults, and the virus has been associated with multisystem inflammatory syndrome in children (MIS-C). The condition causes inflammation through the body, including the heart, lungs, and kidneys.

“We know that COVID can be mischievous, and children are no more exempt from that than adults,” Dr. Reau said.

Liver samples taken from these five patients did not test positive for COVID-19, similar to how liver samples have tested negative for adenovirus in more recent hepatitis cases around the world. Dr. Waisbourd-Zinman suggested that in these patients, hepatitis may have been brought on by an inflammatory response that was triggered by the virus. 

Still, there are notable differences between these five cases and current cases internationally. These five children became sick during the period of December 2020 to September 2021, whereas all current counted cases in the United Kingdom occurred after January 2022. The first cases in the United States took place in October 2021. It could be that there were similar hepatitis cases before that were not identified, Dr. Reau said.

The ages of the Israeli children with hepatitis also differ from the cases seen globally. More than three-fourths of these reported hepatitis cases occurred in children under 5, the WHO reports, though affected individuals have been as young as 1-month-old up to 16 years old. In the United Kingdom, which accounts for about a third of cases reported to the WHO, most children with unexplained hepatitis have been between 3 and 5 years old.

More research is needed to tease out any relationship between prior COVID-19 infection and liver inflammation, Dr. Balistreri said.

“I’m not sure what to make of any of it yet. We know that SARS-CoV-2 can alter immune responses ... so it wouldn’t surprise me,” if COVID-19 and these hepatitis cases were linked, he said. “It’s just that we need more information.”

A version of this article first appeared on WebMD.com.

There may be a link between the recent unexplained cases of hepatitis in children and prior coronavirus infections, according to new research from Israel.

The study involves five children in Israel who had mild cases of COVID-19 who went on to develop hepatitis; two of these children required liver transplants. But clinicians are cautious about drawing conclusions from such a small study.

“All you can say is that these five cases seem to have proximity to COVID-19, and COVID-19 may be able to cause pediatric liver complications,” said Nancy Reau, MD, section chief of hepatology at Rush University in Chicago. She was not involved with the study.

While COVID-19 could be one explanation for these hepatitis cases, it is also possible that the two are unrelated, said William Balistreri, MD, director emeritus of the Pediatric Liver Care Center at Cincinnati Children’s Hospital Medical Center. He also is unaffiliated with the study.

Hepatitis is rare in children, and between 30% and 50% of these pediatric cases have no known cause, according to the CDC.

Since April 2022, children with hepatitis of an unexplained cause have garnered global attention. The United Kingdom now has 240 confirmed cases, the United States is investigating 290 cases, and Israel has reported 12 cases to the World Health Organization. Many investigators think that these liver problems could be related to adenovirus – a common infection in children that normally causes cold or flu-like symptoms – because more than half of global cases tested for the virus have been positive, according to the WHO. About 12% of children with unexplained hepatitis have tested positive for SARS-CoV-2, the virus that causes COVID-19, but investigators are considering the possibility that some cases may be related to prior infections.

The study documents five patients, 3-months to 13 years old, with prior  coronavirus infection who later developed hepatitis. All were treated at Schneider Children’s Medical Hospital in Petah Tikva, Israel, during 2021. The paper was published in the Journal of Pediatric Gastroenterology and Nutrition. Two patients, a 3-month-old and 5-month-old, needed liver transplants. The other three patients (two 8-year-olds and a 13-year-old) were treated with steroids. None of the five children had received any vaccinations against COVID-19. The time between COVID-19 infection and liver problems ranged from 21 to 130 days.

“It took time to be convinced that this could be COVID-related,” said senior study author Orith Waisbourd-Zinman, MD, director of pediatric liver disease service at Schneider Children’s Medical Hospital. “It’s something that wasn’t described.”

Sudden-onset hepatitis after COVID-19 has been recorded in adults, and the virus has been associated with multisystem inflammatory syndrome in children (MIS-C). The condition causes inflammation through the body, including the heart, lungs, and kidneys.

“We know that COVID can be mischievous, and children are no more exempt from that than adults,” Dr. Reau said.

Liver samples taken from these five patients did not test positive for COVID-19, similar to how liver samples have tested negative for adenovirus in more recent hepatitis cases around the world. Dr. Waisbourd-Zinman suggested that in these patients, hepatitis may have been brought on by an inflammatory response that was triggered by the virus. 

Still, there are notable differences between these five cases and current cases internationally. These five children became sick during the period of December 2020 to September 2021, whereas all current counted cases in the United Kingdom occurred after January 2022. The first cases in the United States took place in October 2021. It could be that there were similar hepatitis cases before that were not identified, Dr. Reau said.

The ages of the Israeli children with hepatitis also differ from the cases seen globally. More than three-fourths of these reported hepatitis cases occurred in children under 5, the WHO reports, though affected individuals have been as young as 1-month-old up to 16 years old. In the United Kingdom, which accounts for about a third of cases reported to the WHO, most children with unexplained hepatitis have been between 3 and 5 years old.

More research is needed to tease out any relationship between prior COVID-19 infection and liver inflammation, Dr. Balistreri said.

“I’m not sure what to make of any of it yet. We know that SARS-CoV-2 can alter immune responses ... so it wouldn’t surprise me,” if COVID-19 and these hepatitis cases were linked, he said. “It’s just that we need more information.”

A version of this article first appeared on WebMD.com.

The number of pediatric hepatitis cases has remained steady since 2017, new research from the Centers for Disease Control and Prevention suggests, despite the recent investigation into children with hepatitis of unknown cause. The study also found that there was no indication of elevated rates of adenovirus type 40/41 infection in children.

But Rohit Kohli, MBBS, MS, chief of the Division of Gastroenterology, Hepatology, and Nutrition at the Children’s Hospital Los Angeles, California, says that although the study is “well-designed and robust,” that does not mean that these hepatitis cases of unknown origin are no longer a concern. He was not involved with the CDC research. “As a clinician, I’m still worried,” he said. “Why I feel like this is not conclusive is that there are other data from entities like the United Kingdom Health Security Agency that are incongruent with [these findings],” he said.

The research was published in the CDC’s Morbidity and Mortality Weekly Report.

In November 2021, the Alabama Department of Public Health began an investigation with the CDC after a cluster of children were admitted to a children’s hospital in the state with severe hepatitis, who all tested positive for adenovirus. When the United Kingdom’s Health Security Agency announced an investigation into similar cases in early April 2022, the CDC decided to expand their search nationally.

Now, as of June 15, the agency is investigating 290 cases in 41 states and U.S. territories. Worldwide, 650 cases in 33 countries have been reported, according to the most recent update by the World Health Organization on May 27, 2022. At least 38 patients have needed liver transplants, and nine deaths have been reported to WHO.

In its most recent press call on the topic, the CDC announced that it’s aware of six deaths in the United States through May 20, 2022. The COVID-19 vaccine has been ruled out as a potential cause because the majority of affected children are unvaccinated or are too young to receive the vaccine. Adenovirus infection remains a leading suspect in these sick children because the virus has been detected in 60.8% of tested cases, WHO reports.

Investigators have detected an increase in reported pediatric hepatitis cases, compared with prior years in the United Kingdom, but it was not clear whether that same pattern would be found in the United States. Neither pediatric hepatitis nor adenovirus type 40/41 are reportable conditions in the United States. In the May 20 CDC press call, Umesh Parashar, MD, chief of the CDC’s Viral Gastroenteritis Branch, said that an estimated 1,500-2,000 children aged younger than 10 are hospitalized in the United States for hepatitis every year. “That’s a fairly large number,” he said, and it might make it difficult to detect a small increase in cases.

To better estimate trends in pediatric hepatitis and adenovirus infection in the United States, investigators collected available data on emergency department (ED) visits, hospitalizations, and liver transplants associated with hepatitis in children as well as adenovirus stool testing results. Researchers used four large databases: the National Syndromic Surveillance Program; the Premier Healthcare Database Special Release; the Organ Procurement and Transplant Network; and Labcorp, which is a large commercial lab network.

To account for changes in health care utilization in the first year of the COVID-19 pandemic, the team compared hepatitis-associated ED visits, hospitalizations, and liver transplants from October 2021 to March 2022 versus the same months (January to March and October to December) in 2017, 2018, and 2019. For adenovirus stool testing, results from October 2021 to March 2022 were compared with the same calendar months (October to March) from 2017-2018, 2018-2019, and 2019-2020, to help control for seasonality.

• Weekly ED visits with hepatitis-associated discharge codes
• Hepatitis-associated monthly hospitalizations in children aged 0-4 years (22 vs. 19.5; P = .26)
• Hepatitis-associated monthly hospitalization in children aged 5-11 years (12 vs. 10.5; P = .42)
• Monthly liver transplants (5 vs. 4; P = .19)
• Percentage of stool specimens positive for adenovirus types 40/41, though the number of specimens tested was highest in March 2022

The authors acknowledged that pediatric hepatitis is rare, so it may be difficult tease out small changes in the number of cases. Also, data on hospitalizations and liver transplants have a 2- to 3-month reporting delay, so the case counts for March 2022 “might be underreported,” they wrote. Mr. Kohli noted that because hepatitis and adenovirus are not reportable conditions, the analysis relied on retrospective data from insurance companies and electronic medical records. Retrospective data are inherently limited, compared with prospective analyses, he said, and it’s possible that certain cases could be included in more than one database and thus be double-counted, whereas other cases could be missed entirely.

These findings also conflict with data from the United Kingdom, which in May reported that the average number of hepatitis cases had increased, compared with previous years, he said. More data are needed, he said, and he is involved with a study with the North American Society for Pediatric Gastroenterology and the American Association for the Study of Liver Diseases that is also collecting data to try to understand whether there has been an uptick in pediatric hepatitis cases. The study will collect patient data directly from hospitals as well as include additional pathology data, such as biopsy results.

“We should not be inhibited to look further academically – and public health–wise – while we take into cognizance this very good, robust attempt from the CDC,” he said.

A version of this article first appeared on Medscape.com.

The number of pediatric hepatitis cases has remained steady since 2017, new research from the Centers for Disease Control and Prevention suggests, despite the recent investigation into children with hepatitis of unknown cause. The study also found that there was no indication of elevated rates of adenovirus type 40/41 infection in children.

But Rohit Kohli, MBBS, MS, chief of the Division of Gastroenterology, Hepatology, and Nutrition at the Children’s Hospital Los Angeles, California, says that although the study is “well-designed and robust,” that does not mean that these hepatitis cases of unknown origin are no longer a concern. He was not involved with the CDC research. “As a clinician, I’m still worried,” he said. “Why I feel like this is not conclusive is that there are other data from entities like the United Kingdom Health Security Agency that are incongruent with [these findings],” he said.

The research was published in the CDC’s Morbidity and Mortality Weekly Report.

In November 2021, the Alabama Department of Public Health began an investigation with the CDC after a cluster of children were admitted to a children’s hospital in the state with severe hepatitis, who all tested positive for adenovirus. When the United Kingdom’s Health Security Agency announced an investigation into similar cases in early April 2022, the CDC decided to expand their search nationally.

Now, as of June 15, the agency is investigating 290 cases in 41 states and U.S. territories. Worldwide, 650 cases in 33 countries have been reported, according to the most recent update by the World Health Organization on May 27, 2022. At least 38 patients have needed liver transplants, and nine deaths have been reported to WHO.

In its most recent press call on the topic, the CDC announced that it’s aware of six deaths in the United States through May 20, 2022. The COVID-19 vaccine has been ruled out as a potential cause because the majority of affected children are unvaccinated or are too young to receive the vaccine. Adenovirus infection remains a leading suspect in these sick children because the virus has been detected in 60.8% of tested cases, WHO reports.

Investigators have detected an increase in reported pediatric hepatitis cases, compared with prior years in the United Kingdom, but it was not clear whether that same pattern would be found in the United States. Neither pediatric hepatitis nor adenovirus type 40/41 are reportable conditions in the United States. In the May 20 CDC press call, Umesh Parashar, MD, chief of the CDC’s Viral Gastroenteritis Branch, said that an estimated 1,500-2,000 children aged younger than 10 are hospitalized in the United States for hepatitis every year. “That’s a fairly large number,” he said, and it might make it difficult to detect a small increase in cases.

To better estimate trends in pediatric hepatitis and adenovirus infection in the United States, investigators collected available data on emergency department (ED) visits, hospitalizations, and liver transplants associated with hepatitis in children as well as adenovirus stool testing results. Researchers used four large databases: the National Syndromic Surveillance Program; the Premier Healthcare Database Special Release; the Organ Procurement and Transplant Network; and Labcorp, which is a large commercial lab network.

To account for changes in health care utilization in the first year of the COVID-19 pandemic, the team compared hepatitis-associated ED visits, hospitalizations, and liver transplants from October 2021 to March 2022 versus the same months (January to March and October to December) in 2017, 2018, and 2019. For adenovirus stool testing, results from October 2021 to March 2022 were compared with the same calendar months (October to March) from 2017-2018, 2018-2019, and 2019-2020, to help control for seasonality.

• Weekly ED visits with hepatitis-associated discharge codes
• Hepatitis-associated monthly hospitalizations in children aged 0-4 years (22 vs. 19.5; P = .26)
• Hepatitis-associated monthly hospitalization in children aged 5-11 years (12 vs. 10.5; P = .42)
• Monthly liver transplants (5 vs. 4; P = .19)
• Percentage of stool specimens positive for adenovirus types 40/41, though the number of specimens tested was highest in March 2022

The authors acknowledged that pediatric hepatitis is rare, so it may be difficult tease out small changes in the number of cases. Also, data on hospitalizations and liver transplants have a 2- to 3-month reporting delay, so the case counts for March 2022 “might be underreported,” they wrote. Mr. Kohli noted that because hepatitis and adenovirus are not reportable conditions, the analysis relied on retrospective data from insurance companies and electronic medical records. Retrospective data are inherently limited, compared with prospective analyses, he said, and it’s possible that certain cases could be included in more than one database and thus be double-counted, whereas other cases could be missed entirely.

These findings also conflict with data from the United Kingdom, which in May reported that the average number of hepatitis cases had increased, compared with previous years, he said. More data are needed, he said, and he is involved with a study with the North American Society for Pediatric Gastroenterology and the American Association for the Study of Liver Diseases that is also collecting data to try to understand whether there has been an uptick in pediatric hepatitis cases. The study will collect patient data directly from hospitals as well as include additional pathology data, such as biopsy results.

“We should not be inhibited to look further academically – and public health–wise – while we take into cognizance this very good, robust attempt from the CDC,” he said.

A version of this article first appeared on Medscape.com.

The number of pediatric hepatitis cases has remained steady since 2017, new research from the Centers for Disease Control and Prevention suggests, despite the recent investigation into children with hepatitis of unknown cause. The study also found that there was no indication of elevated rates of adenovirus type 40/41 infection in children.

But Rohit Kohli, MBBS, MS, chief of the Division of Gastroenterology, Hepatology, and Nutrition at the Children’s Hospital Los Angeles, California, says that although the study is “well-designed and robust,” that does not mean that these hepatitis cases of unknown origin are no longer a concern. He was not involved with the CDC research. “As a clinician, I’m still worried,” he said. “Why I feel like this is not conclusive is that there are other data from entities like the United Kingdom Health Security Agency that are incongruent with [these findings],” he said.

The research was published in the CDC’s Morbidity and Mortality Weekly Report.

In November 2021, the Alabama Department of Public Health began an investigation with the CDC after a cluster of children were admitted to a children’s hospital in the state with severe hepatitis, who all tested positive for adenovirus. When the United Kingdom’s Health Security Agency announced an investigation into similar cases in early April 2022, the CDC decided to expand their search nationally.

Now, as of June 15, the agency is investigating 290 cases in 41 states and U.S. territories. Worldwide, 650 cases in 33 countries have been reported, according to the most recent update by the World Health Organization on May 27, 2022. At least 38 patients have needed liver transplants, and nine deaths have been reported to WHO.

In its most recent press call on the topic, the CDC announced that it’s aware of six deaths in the United States through May 20, 2022. The COVID-19 vaccine has been ruled out as a potential cause because the majority of affected children are unvaccinated or are too young to receive the vaccine. Adenovirus infection remains a leading suspect in these sick children because the virus has been detected in 60.8% of tested cases, WHO reports.

Investigators have detected an increase in reported pediatric hepatitis cases, compared with prior years in the United Kingdom, but it was not clear whether that same pattern would be found in the United States. Neither pediatric hepatitis nor adenovirus type 40/41 are reportable conditions in the United States. In the May 20 CDC press call, Umesh Parashar, MD, chief of the CDC’s Viral Gastroenteritis Branch, said that an estimated 1,500-2,000 children aged younger than 10 are hospitalized in the United States for hepatitis every year. “That’s a fairly large number,” he said, and it might make it difficult to detect a small increase in cases.

To better estimate trends in pediatric hepatitis and adenovirus infection in the United States, investigators collected available data on emergency department (ED) visits, hospitalizations, and liver transplants associated with hepatitis in children as well as adenovirus stool testing results. Researchers used four large databases: the National Syndromic Surveillance Program; the Premier Healthcare Database Special Release; the Organ Procurement and Transplant Network; and Labcorp, which is a large commercial lab network.

To account for changes in health care utilization in the first year of the COVID-19 pandemic, the team compared hepatitis-associated ED visits, hospitalizations, and liver transplants from October 2021 to March 2022 versus the same months (January to March and October to December) in 2017, 2018, and 2019. For adenovirus stool testing, results from October 2021 to March 2022 were compared with the same calendar months (October to March) from 2017-2018, 2018-2019, and 2019-2020, to help control for seasonality.

• Weekly ED visits with hepatitis-associated discharge codes
• Hepatitis-associated monthly hospitalizations in children aged 0-4 years (22 vs. 19.5; P = .26)
• Hepatitis-associated monthly hospitalization in children aged 5-11 years (12 vs. 10.5; P = .42)
• Monthly liver transplants (5 vs. 4; P = .19)
• Percentage of stool specimens positive for adenovirus types 40/41, though the number of specimens tested was highest in March 2022

The authors acknowledged that pediatric hepatitis is rare, so it may be difficult tease out small changes in the number of cases. Also, data on hospitalizations and liver transplants have a 2- to 3-month reporting delay, so the case counts for March 2022 “might be underreported,” they wrote. Mr. Kohli noted that because hepatitis and adenovirus are not reportable conditions, the analysis relied on retrospective data from insurance companies and electronic medical records. Retrospective data are inherently limited, compared with prospective analyses, he said, and it’s possible that certain cases could be included in more than one database and thus be double-counted, whereas other cases could be missed entirely.

These findings also conflict with data from the United Kingdom, which in May reported that the average number of hepatitis cases had increased, compared with previous years, he said. More data are needed, he said, and he is involved with a study with the North American Society for Pediatric Gastroenterology and the American Association for the Study of Liver Diseases that is also collecting data to try to understand whether there has been an uptick in pediatric hepatitis cases. The study will collect patient data directly from hospitals as well as include additional pathology data, such as biopsy results.

“We should not be inhibited to look further academically – and public health–wise – while we take into cognizance this very good, robust attempt from the CDC,” he said.

A version of this article first appeared on Medscape.com.

The annual cost of Lyme disease in the United States could be nearly $970 million, according to new research. But not all cases of Lyme disease are equally costly. Costs for patients with disseminated Lyme disease were more than twice as high as those for patients with localized disease.

CDC/ Dr. Amanda Loftis, Dr. William Nicholson, Dr. Will Reeves, Dr. Chris Paddock

“These findings emphasize the importance of early and accurate diagnosis to reduce both illness and its associated personal and societal costs,” the study’s authors write. The analysis was published  in Emerging Infectious Diseases. The authors are from the Centers for Disease Control and Prevention, the Yale School of Public Health, and the Departments of Health of Minnesota, Maryland, and New York State.

Lyme disease is the most reported vector-borne disease in the United States; an estimated 476,000 Americans are diagnosed with the infection every year. Though the highest incidences are in the Northeast and in Minnesota and Wisconsin, the CDC has recorded cases in all 50 states. Over the past 20 years, estimates of the total cost of treating Lyme disease have varied from $203 million to nearly $1.3 billion. A major limitation to these studies, however, is that they may not accurately identify patients with Lyme disease or capture many of the nonmedical costs associated with treatment, the authors write, such as costs associated with time taken off work and travel to appointments.

To better capture the comprehensive cost of Lyme disease in the United States, researchers conducted a prospective study from September 2014 to January 2016 and followed reported cases in four states with high rates of Lyme disease: Connecticut, Maryland, Minnesota, and New York. The team conducted monthly patient surveys and queried billing codes from participants’ clinicians to estimate both the personal expenses and societal costs – such as total costs to the health care system – of Lyme disease.

Participants were variously assigned to one of three categories: those with confirmed local disease (such as patients with erythema migrans); those with confirmed disseminated disease, with symptoms including arthritis, lymphocytic meningitis, and encephalomyelitis; and those with probable cases with reported symptoms.

The researchers surveyed 901 participants with clinician-diagnosed Lyme disease: 402 with localized disease, 238 with disseminated disease, and 261 with probable cases. Nearly all participants (94%) were White, 57% were men, and 71% had an annual household income above $60,000. About 28% of participants were younger than 18 years, 16% were aged 18-45 years, 36% were aged 46-65, and 19% were older than 65 years. For most participants (68%), complete medical cost data were available. Those data were used to calculate societal costs.

Costs per patient varied dramatically, from $0.46 to $30,628. On average, patients spent $1,252 during the study period on expenses related to Lyme disease treatment, including expenses associated with travel and time taken off work. The median cost to patients was notably smaller, at $244. Patients with disseminated disease had the highest median ($358) and mean ($1,692) costs, followed by participants with probable disease (median, $315; mean, $1,277). Participants with localized disease had the lowest median ($170) and mean ($1,070) costs.

Societal costs ranged from $54 to $122,766 per patient; the median was $690, and the mean was $2,032. Multiplying these numbers by the estimated cases diagnosed nationally each year, researchers determined that the total cost of Lyme disease in the United States is between $345 million and $968 million.

The study “pointed out the tremendous variability in costs” associated with Lyme disease treatment, Brian Fallon, MD, MPH, director of the Lyme and Tick-Borne Diseases Research Center at the Columbia University Irving Medical Center, New York, told this news organization. He was not involved with the research. Some patients continued having health expenses after the end of the study, which means their costs would be even higher, he noted. Though most patients fully recovered after 1 year, about 4% still reported symptoms, and 3% were still incurring costs.

A version of this article first appeared on Medscape.com.

The annual cost of Lyme disease in the United States could be nearly $970 million, according to new research. But not all cases of Lyme disease are equally costly. Costs for patients with disseminated Lyme disease were more than twice as high as those for patients with localized disease.

CDC/ Dr. Amanda Loftis, Dr. William Nicholson, Dr. Will Reeves, Dr. Chris Paddock

“These findings emphasize the importance of early and accurate diagnosis to reduce both illness and its associated personal and societal costs,” the study’s authors write. The analysis was published  in Emerging Infectious Diseases. The authors are from the Centers for Disease Control and Prevention, the Yale School of Public Health, and the Departments of Health of Minnesota, Maryland, and New York State.

Lyme disease is the most reported vector-borne disease in the United States; an estimated 476,000 Americans are diagnosed with the infection every year. Though the highest incidences are in the Northeast and in Minnesota and Wisconsin, the CDC has recorded cases in all 50 states. Over the past 20 years, estimates of the total cost of treating Lyme disease have varied from $203 million to nearly $1.3 billion. A major limitation to these studies, however, is that they may not accurately identify patients with Lyme disease or capture many of the nonmedical costs associated with treatment, the authors write, such as costs associated with time taken off work and travel to appointments.

To better capture the comprehensive cost of Lyme disease in the United States, researchers conducted a prospective study from September 2014 to January 2016 and followed reported cases in four states with high rates of Lyme disease: Connecticut, Maryland, Minnesota, and New York. The team conducted monthly patient surveys and queried billing codes from participants’ clinicians to estimate both the personal expenses and societal costs – such as total costs to the health care system – of Lyme disease.

Participants were variously assigned to one of three categories: those with confirmed local disease (such as patients with erythema migrans); those with confirmed disseminated disease, with symptoms including arthritis, lymphocytic meningitis, and encephalomyelitis; and those with probable cases with reported symptoms.

The researchers surveyed 901 participants with clinician-diagnosed Lyme disease: 402 with localized disease, 238 with disseminated disease, and 261 with probable cases. Nearly all participants (94%) were White, 57% were men, and 71% had an annual household income above $60,000. About 28% of participants were younger than 18 years, 16% were aged 18-45 years, 36% were aged 46-65, and 19% were older than 65 years. For most participants (68%), complete medical cost data were available. Those data were used to calculate societal costs.

Costs per patient varied dramatically, from $0.46 to $30,628. On average, patients spent $1,252 during the study period on expenses related to Lyme disease treatment, including expenses associated with travel and time taken off work. The median cost to patients was notably smaller, at $244. Patients with disseminated disease had the highest median ($358) and mean ($1,692) costs, followed by participants with probable disease (median, $315; mean, $1,277). Participants with localized disease had the lowest median ($170) and mean ($1,070) costs.

Societal costs ranged from $54 to $122,766 per patient; the median was $690, and the mean was $2,032. Multiplying these numbers by the estimated cases diagnosed nationally each year, researchers determined that the total cost of Lyme disease in the United States is between $345 million and $968 million.

The study “pointed out the tremendous variability in costs” associated with Lyme disease treatment, Brian Fallon, MD, MPH, director of the Lyme and Tick-Borne Diseases Research Center at the Columbia University Irving Medical Center, New York, told this news organization. He was not involved with the research. Some patients continued having health expenses after the end of the study, which means their costs would be even higher, he noted. Though most patients fully recovered after 1 year, about 4% still reported symptoms, and 3% were still incurring costs.

A version of this article first appeared on Medscape.com.

The annual cost of Lyme disease in the United States could be nearly $970 million, according to new research. But not all cases of Lyme disease are equally costly. Costs for patients with disseminated Lyme disease were more than twice as high as those for patients with localized disease.

CDC/ Dr. Amanda Loftis, Dr. William Nicholson, Dr. Will Reeves, Dr. Chris Paddock

“These findings emphasize the importance of early and accurate diagnosis to reduce both illness and its associated personal and societal costs,” the study’s authors write. The analysis was published  in Emerging Infectious Diseases. The authors are from the Centers for Disease Control and Prevention, the Yale School of Public Health, and the Departments of Health of Minnesota, Maryland, and New York State.

Lyme disease is the most reported vector-borne disease in the United States; an estimated 476,000 Americans are diagnosed with the infection every year. Though the highest incidences are in the Northeast and in Minnesota and Wisconsin, the CDC has recorded cases in all 50 states. Over the past 20 years, estimates of the total cost of treating Lyme disease have varied from $203 million to nearly $1.3 billion. A major limitation to these studies, however, is that they may not accurately identify patients with Lyme disease or capture many of the nonmedical costs associated with treatment, the authors write, such as costs associated with time taken off work and travel to appointments.

To better capture the comprehensive cost of Lyme disease in the United States, researchers conducted a prospective study from September 2014 to January 2016 and followed reported cases in four states with high rates of Lyme disease: Connecticut, Maryland, Minnesota, and New York. The team conducted monthly patient surveys and queried billing codes from participants’ clinicians to estimate both the personal expenses and societal costs – such as total costs to the health care system – of Lyme disease.

Participants were variously assigned to one of three categories: those with confirmed local disease (such as patients with erythema migrans); those with confirmed disseminated disease, with symptoms including arthritis, lymphocytic meningitis, and encephalomyelitis; and those with probable cases with reported symptoms.

The researchers surveyed 901 participants with clinician-diagnosed Lyme disease: 402 with localized disease, 238 with disseminated disease, and 261 with probable cases. Nearly all participants (94%) were White, 57% were men, and 71% had an annual household income above $60,000. About 28% of participants were younger than 18 years, 16% were aged 18-45 years, 36% were aged 46-65, and 19% were older than 65 years. For most participants (68%), complete medical cost data were available. Those data were used to calculate societal costs.

Costs per patient varied dramatically, from $0.46 to $30,628. On average, patients spent $1,252 during the study period on expenses related to Lyme disease treatment, including expenses associated with travel and time taken off work. The median cost to patients was notably smaller, at $244. Patients with disseminated disease had the highest median ($358) and mean ($1,692) costs, followed by participants with probable disease (median, $315; mean, $1,277). Participants with localized disease had the lowest median ($170) and mean ($1,070) costs.

Societal costs ranged from $54 to $122,766 per patient; the median was $690, and the mean was $2,032. Multiplying these numbers by the estimated cases diagnosed nationally each year, researchers determined that the total cost of Lyme disease in the United States is between $345 million and $968 million.

The study “pointed out the tremendous variability in costs” associated with Lyme disease treatment, Brian Fallon, MD, MPH, director of the Lyme and Tick-Borne Diseases Research Center at the Columbia University Irving Medical Center, New York, told this news organization. He was not involved with the research. Some patients continued having health expenses after the end of the study, which means their costs would be even higher, he noted. Though most patients fully recovered after 1 year, about 4% still reported symptoms, and 3% were still incurring costs.

A version of this article first appeared on Medscape.com.

Health officials are investigating at least 30 cases of severe hepatitis in children across 10 U.S. states. The Minnesota Department of Health received two reports of severe hepatitis, one in an infant and another in a 2-year-old, the Associated Press reported on April 30. One child was treated “several months ago” and required a liver transplant, according to the article. 

Worldwide cases surpass 200, including 34 cases in the United Kingdom, the U.K. Health Security Agency announced on April 29. Most cases have occurred in the United Kingdom, but there have been more than 55 probable and confirmed hepatitis cases in children in 12 countries in the European Union or the European Economic Area. Cases have also been identified in Asia, with both Japan and Singapore reporting one case each of acute hepatitis, Bloomberg reported. Additionally, three children in Indonesia died from acute hepatitis in April, but the total number of cases in that country was not available.

Although the total number of worldwide cases remains small, the severity of the cases – as well as their unexplained cause – have health officials on alert, said David Lee Thomas, MD, MPH, of the Viral Hepatitis Center at Johns Hopkins Medicine in Baltimore. “There are some kids who would have died if not for liver transplants.”

In the United States, the only confirmed cases are in Alabama, where nine patients were admitted for severe hepatitis between October 2021 and February 2022. Beyond the two suspected cases in Minnesota, health officials are investigating at least 19 other potential cases in eight states, according to NBC News: Delaware (1), Georgia, Illinois (3), Louisiana (1), New York, North Carolina (2), Tennessee (6), and Wisconsin (4). (New York and Georgia did not specify the number of cases being investigated.)

Reported cases have occurred in patients aged between 1 month and 16 years old. Globally, at least 17 patients have needed liver transplants, according to a World Health Organization alert on April 23. While WHO officials said there has been at least one death globally linked to hepatitis, that does not include the three deaths in Indonesia. One death has also been reported in Wisconsin, but the state’s Department of Health Services did not confirm whether this death was included in the WHO announcement.

The cause of these severe hepatitis cases has yet to be identified, but these cases have tested negative for more common viruses that can cause hepatitis in children. There is no link between these cases and COVID-19 vaccination, according to WHO, because most affected children have not been vaccinated.

Adenovirus is a possible contributing factor in these cases, as many of the cases in Europe tested positive for the virus. In an analysis of the nine Alabama cases released by the Centers for Disease Control and Prevention, adenovirus was detected in the blood samples of all nine children. Five of the nine children tested positive for adenovirus type 41, which is a common cause of acute gastroenteritis in children. While the six liver biopsies performed showed varying degrees of hepatitis, there were “no viral inclusions observed, no immunohistochemical evidence of adenovirus, or no viral particles identified by electron microscopy,” according to the report. None of the children tested positive for COVID-19 or had a documented history of previous COVID-19 infection.

“At this time, we believe that adenovirus may be the cause for these reported cases, but other potential environmental and situational factors are still being investigated,” the CDC said in a media statement. The CDC added that the report was specific to the nine Alabama cases, and that the agency is working to investigate other potential cases with state and local public health officials.

While the “growing consensus” among experts is that adenovirus could be behind these severe cases, there are many unanswered questions, Dr. Thomas added, such as why this strain of adenovirus causes such severe hepatitis, and why the liver biopsies do not show classic signs of viral infection. That information will come as investigations continue.

“From a provider point of view, if you have a child with an unexplained liver problem, report it to the CDC,” he advised. “Right now, we have to learn more about [these cases],” and that requires more research like the investigations in Alabama, he noted.

A version of this article first appeared on Medscape.com.

Health officials are investigating at least 30 cases of severe hepatitis in children across 10 U.S. states. The Minnesota Department of Health received two reports of severe hepatitis, one in an infant and another in a 2-year-old, the Associated Press reported on April 30. One child was treated “several months ago” and required a liver transplant, according to the article. 

Worldwide cases surpass 200, including 34 cases in the United Kingdom, the U.K. Health Security Agency announced on April 29. Most cases have occurred in the United Kingdom, but there have been more than 55 probable and confirmed hepatitis cases in children in 12 countries in the European Union or the European Economic Area. Cases have also been identified in Asia, with both Japan and Singapore reporting one case each of acute hepatitis, Bloomberg reported. Additionally, three children in Indonesia died from acute hepatitis in April, but the total number of cases in that country was not available.

Although the total number of worldwide cases remains small, the severity of the cases – as well as their unexplained cause – have health officials on alert, said David Lee Thomas, MD, MPH, of the Viral Hepatitis Center at Johns Hopkins Medicine in Baltimore. “There are some kids who would have died if not for liver transplants.”

In the United States, the only confirmed cases are in Alabama, where nine patients were admitted for severe hepatitis between October 2021 and February 2022. Beyond the two suspected cases in Minnesota, health officials are investigating at least 19 other potential cases in eight states, according to NBC News: Delaware (1), Georgia, Illinois (3), Louisiana (1), New York, North Carolina (2), Tennessee (6), and Wisconsin (4). (New York and Georgia did not specify the number of cases being investigated.)

Reported cases have occurred in patients aged between 1 month and 16 years old. Globally, at least 17 patients have needed liver transplants, according to a World Health Organization alert on April 23. While WHO officials said there has been at least one death globally linked to hepatitis, that does not include the three deaths in Indonesia. One death has also been reported in Wisconsin, but the state’s Department of Health Services did not confirm whether this death was included in the WHO announcement.

The cause of these severe hepatitis cases has yet to be identified, but these cases have tested negative for more common viruses that can cause hepatitis in children. There is no link between these cases and COVID-19 vaccination, according to WHO, because most affected children have not been vaccinated.

Adenovirus is a possible contributing factor in these cases, as many of the cases in Europe tested positive for the virus. In an analysis of the nine Alabama cases released by the Centers for Disease Control and Prevention, adenovirus was detected in the blood samples of all nine children. Five of the nine children tested positive for adenovirus type 41, which is a common cause of acute gastroenteritis in children. While the six liver biopsies performed showed varying degrees of hepatitis, there were “no viral inclusions observed, no immunohistochemical evidence of adenovirus, or no viral particles identified by electron microscopy,” according to the report. None of the children tested positive for COVID-19 or had a documented history of previous COVID-19 infection.

“At this time, we believe that adenovirus may be the cause for these reported cases, but other potential environmental and situational factors are still being investigated,” the CDC said in a media statement. The CDC added that the report was specific to the nine Alabama cases, and that the agency is working to investigate other potential cases with state and local public health officials.

While the “growing consensus” among experts is that adenovirus could be behind these severe cases, there are many unanswered questions, Dr. Thomas added, such as why this strain of adenovirus causes such severe hepatitis, and why the liver biopsies do not show classic signs of viral infection. That information will come as investigations continue.

“From a provider point of view, if you have a child with an unexplained liver problem, report it to the CDC,” he advised. “Right now, we have to learn more about [these cases],” and that requires more research like the investigations in Alabama, he noted.

A version of this article first appeared on Medscape.com.

Health officials are investigating at least 30 cases of severe hepatitis in children across 10 U.S. states. The Minnesota Department of Health received two reports of severe hepatitis, one in an infant and another in a 2-year-old, the Associated Press reported on April 30. One child was treated “several months ago” and required a liver transplant, according to the article. 

Worldwide cases surpass 200, including 34 cases in the United Kingdom, the U.K. Health Security Agency announced on April 29. Most cases have occurred in the United Kingdom, but there have been more than 55 probable and confirmed hepatitis cases in children in 12 countries in the European Union or the European Economic Area. Cases have also been identified in Asia, with both Japan and Singapore reporting one case each of acute hepatitis, Bloomberg reported. Additionally, three children in Indonesia died from acute hepatitis in April, but the total number of cases in that country was not available.

Although the total number of worldwide cases remains small, the severity of the cases – as well as their unexplained cause – have health officials on alert, said David Lee Thomas, MD, MPH, of the Viral Hepatitis Center at Johns Hopkins Medicine in Baltimore. “There are some kids who would have died if not for liver transplants.”

In the United States, the only confirmed cases are in Alabama, where nine patients were admitted for severe hepatitis between October 2021 and February 2022. Beyond the two suspected cases in Minnesota, health officials are investigating at least 19 other potential cases in eight states, according to NBC News: Delaware (1), Georgia, Illinois (3), Louisiana (1), New York, North Carolina (2), Tennessee (6), and Wisconsin (4). (New York and Georgia did not specify the number of cases being investigated.)

Reported cases have occurred in patients aged between 1 month and 16 years old. Globally, at least 17 patients have needed liver transplants, according to a World Health Organization alert on April 23. While WHO officials said there has been at least one death globally linked to hepatitis, that does not include the three deaths in Indonesia. One death has also been reported in Wisconsin, but the state’s Department of Health Services did not confirm whether this death was included in the WHO announcement.

The cause of these severe hepatitis cases has yet to be identified, but these cases have tested negative for more common viruses that can cause hepatitis in children. There is no link between these cases and COVID-19 vaccination, according to WHO, because most affected children have not been vaccinated.

Adenovirus is a possible contributing factor in these cases, as many of the cases in Europe tested positive for the virus. In an analysis of the nine Alabama cases released by the Centers for Disease Control and Prevention, adenovirus was detected in the blood samples of all nine children. Five of the nine children tested positive for adenovirus type 41, which is a common cause of acute gastroenteritis in children. While the six liver biopsies performed showed varying degrees of hepatitis, there were “no viral inclusions observed, no immunohistochemical evidence of adenovirus, or no viral particles identified by electron microscopy,” according to the report. None of the children tested positive for COVID-19 or had a documented history of previous COVID-19 infection.

“At this time, we believe that adenovirus may be the cause for these reported cases, but other potential environmental and situational factors are still being investigated,” the CDC said in a media statement. The CDC added that the report was specific to the nine Alabama cases, and that the agency is working to investigate other potential cases with state and local public health officials.

While the “growing consensus” among experts is that adenovirus could be behind these severe cases, there are many unanswered questions, Dr. Thomas added, such as why this strain of adenovirus causes such severe hepatitis, and why the liver biopsies do not show classic signs of viral infection. That information will come as investigations continue.

“From a provider point of view, if you have a child with an unexplained liver problem, report it to the CDC,” he advised. “Right now, we have to learn more about [these cases],” and that requires more research like the investigations in Alabama, he noted.

A version of this article first appeared on Medscape.com.

Pregnant women who underwent immediate surgery to treat a ruptured or abscessed appendix had lower risk of infectious complications, compared with those whose complicated appendicitis was managed without surgery, according to new research.

Most cases that began with nonoperative management eventually required surgery, and the operative delay was associated with an increased risk of preterm labor, preterm delivery, and abortion.

“Our study findings may help to define the preferred management strategy in complicated appendicitis during pregnancy to be immediate operation,” Kazuhide Matsushima, MD, an assistant professor of clinical surgery at the University of Southern California, Los Angeles, and colleagues wrote.

The retrospective study was published in JAMA Network Open.

While acute appendicitis is relatively rare during pregnancy, it is the most common nonobstetric emergency in pregnant women, Dr. Matsushima said. This condition occurs in an estimated 1 in 700 to 1 in 1,500 pregnancies, and some data suggest that pregnant women are at higher risk for perforation and other forms of complicated appendicitis.

National guidelines support appendectomy as the first-line treatment for pregnant women with acute uncomplicated appendicitis, but there is no clear guidance on the best treatment approach for managing complicated appendicitis in this population, the authors note.

To better understand how surgical and nonoperational interventions affected outcomes, investigators analyzed data from the National Inpatient Sample from January 2003 to September 2015 to identify pregnant women with complicated appendicitis. The condition was defined as “acute appendicitis with generalized peritonitis” and “acute appendicitis with peritoneal abscess.” Patients were excluded if they had complications such as ectopic pregnancy and hydatidiform mole.

Investigators split the patients into three groups: those who underwent immediate operation for complicated appendicitis, those whose appendicitis was successfully managed without surgery, and those in whom nonoperative management of their condition failed, resulting in delayed surgery. Failed nonoperative management was defined as at least 1 day of nonoperative management followed by a laparoscopic or open appendectomy.

Of the 8,087 pregnant women identified during the study with complicated appendicitis, 55.5% underwent immediate appendectomy, 11.8% were successfully treated without surgical intervention, and 32.7% had delayed operations after initial failed nonoperative management. There was no significant difference in preterm delivery, preterm labor, or abortion between the immediate operative and successful nonoperative groups; however, the successful nonoperative group was more than twice as likely to experience premature rupture of membranes (odds ratio, 2.77; P = .03). Patients successfully treated without surgery also were at higher risk for infections such as amniotic infection (OR, 4.35; P < .001), pneumonia (OR, 2.52; P < .001), and sepsis (OR, 1.52; P = .01), compared with patients who underwent immediate operation.

Patients who had delayed surgery were 45% more likely to experience preterm delivery, preterm labor, or abortion (OR, 1.45; P < .001), compared with the immediate surgery group. The delayed surgery group was also at higher risk for antepartum hemorrhage (OR, 1.56; P = .03) and premature rupture of membranes (OR, 3.44; P = .002). They were more than four times as likely to have amniotic infection (OR, 4.74; P < .001), twice as likely to contract pneumonia (OR, 2.01; P < .001), and 58% more likely to develop sepsis (OR, 1.58; P < .001), compared with the immediate surgery group. The researchers calculated that every day surgery was delayed, the risk of preterm delivery, preterm labor, and abortion rose by 23% (OR, 1.23; P < .001).

Delayed surgery and successful nonoperative management were also associated with higher hospital charges and longer hospital stays.

Because this was a retrospective study, there are some limitations to the findings, Dr. Matsushima said, and therefore it should not be used to justify changing standards of care; however, it does give more information on the risks associated with different interventions. “It’s very important to have a discussion with the patient and make a shared decision,” he told this news organization, “because each option has significant risks and benefits.”

Because the data were from a database, he added, the research team was not able to see if outcomes from immediate surgery, nonoperative management, and delayed surgery differed in each trimester.

Kenneth W. Sharp, MD, a professor of surgery at Vanderbilt University Medical Center in Nashville, Tenn., agreed that the study does have limitations, such as lack of information on how complicated appendicitis was identified and diagnosed; however, the study does provide guidance to surgeons in a surgical area with “very sparse literature,” he told this news organization. Dr. Sharp is also a regent from the American College of Surgeons, which arranged the interview.

“Especially with these very complicated patients, it was never clear what to do,” he said. “With the recent studies showing that treatment of appendicitis with antibiotics works for a large number of people, people start extrapolating [those findings] to complicated appendicitis and they start extrapolating it to pregnant women, none of which the studies were meant to show anything about,” he said.

This analysis gives additional information to inform treatment decisions in pregnant women who may be hesitant to undergo this abdominal surgery because of possible complications, like pregnancy loss, he added. “Now, I can say to them that the data would suggest that with your particular complicated appendicitis, we should operate sooner, not later.”

Dr. Matsushima and Dr. Sharp have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Pregnant women who underwent immediate surgery to treat a ruptured or abscessed appendix had lower risk of infectious complications, compared with those whose complicated appendicitis was managed without surgery, according to new research.

Most cases that began with nonoperative management eventually required surgery, and the operative delay was associated with an increased risk of preterm labor, preterm delivery, and abortion.

“Our study findings may help to define the preferred management strategy in complicated appendicitis during pregnancy to be immediate operation,” Kazuhide Matsushima, MD, an assistant professor of clinical surgery at the University of Southern California, Los Angeles, and colleagues wrote.

The retrospective study was published in JAMA Network Open.

While acute appendicitis is relatively rare during pregnancy, it is the most common nonobstetric emergency in pregnant women, Dr. Matsushima said. This condition occurs in an estimated 1 in 700 to 1 in 1,500 pregnancies, and some data suggest that pregnant women are at higher risk for perforation and other forms of complicated appendicitis.

National guidelines support appendectomy as the first-line treatment for pregnant women with acute uncomplicated appendicitis, but there is no clear guidance on the best treatment approach for managing complicated appendicitis in this population, the authors note.

To better understand how surgical and nonoperational interventions affected outcomes, investigators analyzed data from the National Inpatient Sample from January 2003 to September 2015 to identify pregnant women with complicated appendicitis. The condition was defined as “acute appendicitis with generalized peritonitis” and “acute appendicitis with peritoneal abscess.” Patients were excluded if they had complications such as ectopic pregnancy and hydatidiform mole.

Investigators split the patients into three groups: those who underwent immediate operation for complicated appendicitis, those whose appendicitis was successfully managed without surgery, and those in whom nonoperative management of their condition failed, resulting in delayed surgery. Failed nonoperative management was defined as at least 1 day of nonoperative management followed by a laparoscopic or open appendectomy.

Of the 8,087 pregnant women identified during the study with complicated appendicitis, 55.5% underwent immediate appendectomy, 11.8% were successfully treated without surgical intervention, and 32.7% had delayed operations after initial failed nonoperative management. There was no significant difference in preterm delivery, preterm labor, or abortion between the immediate operative and successful nonoperative groups; however, the successful nonoperative group was more than twice as likely to experience premature rupture of membranes (odds ratio, 2.77; P = .03). Patients successfully treated without surgery also were at higher risk for infections such as amniotic infection (OR, 4.35; P < .001), pneumonia (OR, 2.52; P < .001), and sepsis (OR, 1.52; P = .01), compared with patients who underwent immediate operation.

Patients who had delayed surgery were 45% more likely to experience preterm delivery, preterm labor, or abortion (OR, 1.45; P < .001), compared with the immediate surgery group. The delayed surgery group was also at higher risk for antepartum hemorrhage (OR, 1.56; P = .03) and premature rupture of membranes (OR, 3.44; P = .002). They were more than four times as likely to have amniotic infection (OR, 4.74; P < .001), twice as likely to contract pneumonia (OR, 2.01; P < .001), and 58% more likely to develop sepsis (OR, 1.58; P < .001), compared with the immediate surgery group. The researchers calculated that every day surgery was delayed, the risk of preterm delivery, preterm labor, and abortion rose by 23% (OR, 1.23; P < .001).

Delayed surgery and successful nonoperative management were also associated with higher hospital charges and longer hospital stays.

Because this was a retrospective study, there are some limitations to the findings, Dr. Matsushima said, and therefore it should not be used to justify changing standards of care; however, it does give more information on the risks associated with different interventions. “It’s very important to have a discussion with the patient and make a shared decision,” he told this news organization, “because each option has significant risks and benefits.”

Because the data were from a database, he added, the research team was not able to see if outcomes from immediate surgery, nonoperative management, and delayed surgery differed in each trimester.

Kenneth W. Sharp, MD, a professor of surgery at Vanderbilt University Medical Center in Nashville, Tenn., agreed that the study does have limitations, such as lack of information on how complicated appendicitis was identified and diagnosed; however, the study does provide guidance to surgeons in a surgical area with “very sparse literature,” he told this news organization. Dr. Sharp is also a regent from the American College of Surgeons, which arranged the interview.

“Especially with these very complicated patients, it was never clear what to do,” he said. “With the recent studies showing that treatment of appendicitis with antibiotics works for a large number of people, people start extrapolating [those findings] to complicated appendicitis and they start extrapolating it to pregnant women, none of which the studies were meant to show anything about,” he said.

This analysis gives additional information to inform treatment decisions in pregnant women who may be hesitant to undergo this abdominal surgery because of possible complications, like pregnancy loss, he added. “Now, I can say to them that the data would suggest that with your particular complicated appendicitis, we should operate sooner, not later.”

Dr. Matsushima and Dr. Sharp have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Pregnant women who underwent immediate surgery to treat a ruptured or abscessed appendix had lower risk of infectious complications, compared with those whose complicated appendicitis was managed without surgery, according to new research.

Most cases that began with nonoperative management eventually required surgery, and the operative delay was associated with an increased risk of preterm labor, preterm delivery, and abortion.

“Our study findings may help to define the preferred management strategy in complicated appendicitis during pregnancy to be immediate operation,” Kazuhide Matsushima, MD, an assistant professor of clinical surgery at the University of Southern California, Los Angeles, and colleagues wrote.

The retrospective study was published in JAMA Network Open.

While acute appendicitis is relatively rare during pregnancy, it is the most common nonobstetric emergency in pregnant women, Dr. Matsushima said. This condition occurs in an estimated 1 in 700 to 1 in 1,500 pregnancies, and some data suggest that pregnant women are at higher risk for perforation and other forms of complicated appendicitis.

National guidelines support appendectomy as the first-line treatment for pregnant women with acute uncomplicated appendicitis, but there is no clear guidance on the best treatment approach for managing complicated appendicitis in this population, the authors note.

To better understand how surgical and nonoperational interventions affected outcomes, investigators analyzed data from the National Inpatient Sample from January 2003 to September 2015 to identify pregnant women with complicated appendicitis. The condition was defined as “acute appendicitis with generalized peritonitis” and “acute appendicitis with peritoneal abscess.” Patients were excluded if they had complications such as ectopic pregnancy and hydatidiform mole.

Investigators split the patients into three groups: those who underwent immediate operation for complicated appendicitis, those whose appendicitis was successfully managed without surgery, and those in whom nonoperative management of their condition failed, resulting in delayed surgery. Failed nonoperative management was defined as at least 1 day of nonoperative management followed by a laparoscopic or open appendectomy.

Of the 8,087 pregnant women identified during the study with complicated appendicitis, 55.5% underwent immediate appendectomy, 11.8% were successfully treated without surgical intervention, and 32.7% had delayed operations after initial failed nonoperative management. There was no significant difference in preterm delivery, preterm labor, or abortion between the immediate operative and successful nonoperative groups; however, the successful nonoperative group was more than twice as likely to experience premature rupture of membranes (odds ratio, 2.77; P = .03). Patients successfully treated without surgery also were at higher risk for infections such as amniotic infection (OR, 4.35; P < .001), pneumonia (OR, 2.52; P < .001), and sepsis (OR, 1.52; P = .01), compared with patients who underwent immediate operation.

Patients who had delayed surgery were 45% more likely to experience preterm delivery, preterm labor, or abortion (OR, 1.45; P < .001), compared with the immediate surgery group. The delayed surgery group was also at higher risk for antepartum hemorrhage (OR, 1.56; P = .03) and premature rupture of membranes (OR, 3.44; P = .002). They were more than four times as likely to have amniotic infection (OR, 4.74; P < .001), twice as likely to contract pneumonia (OR, 2.01; P < .001), and 58% more likely to develop sepsis (OR, 1.58; P < .001), compared with the immediate surgery group. The researchers calculated that every day surgery was delayed, the risk of preterm delivery, preterm labor, and abortion rose by 23% (OR, 1.23; P < .001).

Delayed surgery and successful nonoperative management were also associated with higher hospital charges and longer hospital stays.

Because this was a retrospective study, there are some limitations to the findings, Dr. Matsushima said, and therefore it should not be used to justify changing standards of care; however, it does give more information on the risks associated with different interventions. “It’s very important to have a discussion with the patient and make a shared decision,” he told this news organization, “because each option has significant risks and benefits.”

Because the data were from a database, he added, the research team was not able to see if outcomes from immediate surgery, nonoperative management, and delayed surgery differed in each trimester.

Kenneth W. Sharp, MD, a professor of surgery at Vanderbilt University Medical Center in Nashville, Tenn., agreed that the study does have limitations, such as lack of information on how complicated appendicitis was identified and diagnosed; however, the study does provide guidance to surgeons in a surgical area with “very sparse literature,” he told this news organization. Dr. Sharp is also a regent from the American College of Surgeons, which arranged the interview.

“Especially with these very complicated patients, it was never clear what to do,” he said. “With the recent studies showing that treatment of appendicitis with antibiotics works for a large number of people, people start extrapolating [those findings] to complicated appendicitis and they start extrapolating it to pregnant women, none of which the studies were meant to show anything about,” he said.

This analysis gives additional information to inform treatment decisions in pregnant women who may be hesitant to undergo this abdominal surgery because of possible complications, like pregnancy loss, he added. “Now, I can say to them that the data would suggest that with your particular complicated appendicitis, we should operate sooner, not later.”

Dr. Matsushima and Dr. Sharp have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The U.S. Centers for Disease Control and Prevention has issued a health alert regarding severe hepatitis in young children after several cases have been reported in Alabama. Public health officials in the United Kingdom are also investigating more than 100 cases. While the source of the infections is unknown, “a possible association between pediatric hepatitis and adenovirus infection is currently under investigation,” according to the CDC alert.

Internationally, 108 cases have been reported in the United Kingdom, with 79 cases occurring in England. There are three documented cases in Spain, and similar cases are being reported in Denmark and the Netherlands, according to an article in Science. In the United Kingdom, cases have been reported in children up to 16 years old, but most affected children are between 2 and 5 years old. Eight children in the United Kingdom have required liver transplants.

On April 14, the CDC said that nine cases have been recorded in Alabama since the fall of 2021. All of these cases have been in children between 1 and 6 years old, and two children have needed liver transplants. Two additional cases have been reported in North Carolina, according to Stat News, and both children have since recovered.

Hepatitis A, B, C, D, and E viruses—common causes of hepatitis—have been ruled out in the U.K. and Spanish cases. More than three-fourths (77%) of the children sickened in the United Kingdom and all nine cases in Alabama have tested positive for a form of the adenovirus. While adenovirus can cause hepatitis in children, it is usually in those who are immunocompromised.

The CDC health alert advises clinicians who have cases of unexplained hepatitis in children to test for adenovirus and report these cases to the CDC as well as state public health authorities. The agency recommends nucleic acid amplification testing to detect adenovirus using respiratory swabs, stool samples or rectal swabs, or blood.

Officials are exploring whether these cases are linked to a version of the virus called adenovirus 41, which is associated with gut inflammation. The most recent case in Alabama was reported in February, and five of the nine children in the state with these puzzling cases of hepatitis have tested positive for adenovirus 41.

There have yet to be any links among the cases in Alabama or North Carolina, and investigators in the United Kingdom have also not found any connections in their cases, STAT News reports.

“CDC is working with state health departments to see if there are additional U.S. cases and what may be causing these cases,” said Kristen Nordlund, a CDC spokesperson, in a statement to STAT News. “At this time, adenovirus may be the cause for these, but investigators are still learning more – including ruling out the more common causes of hepatitis.”

Looking for other explanations

None of the children in the United States with hepatitis had COVID-19, but a few children in the United Kingdom have tested positive for the virus; none of these children have received the COVID-19 vaccine.

While the U.K. Health Security Agency says their investigation “continues to point toward a link to adenovirus infection,” they are also considering other contributing factors such as an environmental cause or COVID-19.

“COVID has been consistently shown to increase liver test numbers,” Nancy Reau, MD, the section chief of hepatology at Rush University in Chicago, said in an interview with this news organization. “It has been shown to cause other organ involvement besides just pulmonary symptoms and respiratory failure. As this virus evolves, it might be that in children, it is more able to present as hepatitis.”
 

A version of this article first appeared on Medscape.com.

This article was updated 4/22/22.

The U.S. Centers for Disease Control and Prevention has issued a health alert regarding severe hepatitis in young children after several cases have been reported in Alabama. Public health officials in the United Kingdom are also investigating more than 100 cases. While the source of the infections is unknown, “a possible association between pediatric hepatitis and adenovirus infection is currently under investigation,” according to the CDC alert.

Internationally, 108 cases have been reported in the United Kingdom, with 79 cases occurring in England. There are three documented cases in Spain, and similar cases are being reported in Denmark and the Netherlands, according to an article in Science. In the United Kingdom, cases have been reported in children up to 16 years old, but most affected children are between 2 and 5 years old. Eight children in the United Kingdom have required liver transplants.

On April 14, the CDC said that nine cases have been recorded in Alabama since the fall of 2021. All of these cases have been in children between 1 and 6 years old, and two children have needed liver transplants. Two additional cases have been reported in North Carolina, according to Stat News, and both children have since recovered.

Hepatitis A, B, C, D, and E viruses—common causes of hepatitis—have been ruled out in the U.K. and Spanish cases. More than three-fourths (77%) of the children sickened in the United Kingdom and all nine cases in Alabama have tested positive for a form of the adenovirus. While adenovirus can cause hepatitis in children, it is usually in those who are immunocompromised.

The CDC health alert advises clinicians who have cases of unexplained hepatitis in children to test for adenovirus and report these cases to the CDC as well as state public health authorities. The agency recommends nucleic acid amplification testing to detect adenovirus using respiratory swabs, stool samples or rectal swabs, or blood.

Officials are exploring whether these cases are linked to a version of the virus called adenovirus 41, which is associated with gut inflammation. The most recent case in Alabama was reported in February, and five of the nine children in the state with these puzzling cases of hepatitis have tested positive for adenovirus 41.

There have yet to be any links among the cases in Alabama or North Carolina, and investigators in the United Kingdom have also not found any connections in their cases, STAT News reports.

“CDC is working with state health departments to see if there are additional U.S. cases and what may be causing these cases,” said Kristen Nordlund, a CDC spokesperson, in a statement to STAT News. “At this time, adenovirus may be the cause for these, but investigators are still learning more – including ruling out the more common causes of hepatitis.”

Looking for other explanations

None of the children in the United States with hepatitis had COVID-19, but a few children in the United Kingdom have tested positive for the virus; none of these children have received the COVID-19 vaccine.

While the U.K. Health Security Agency says their investigation “continues to point toward a link to adenovirus infection,” they are also considering other contributing factors such as an environmental cause or COVID-19.

“COVID has been consistently shown to increase liver test numbers,” Nancy Reau, MD, the section chief of hepatology at Rush University in Chicago, said in an interview with this news organization. “It has been shown to cause other organ involvement besides just pulmonary symptoms and respiratory failure. As this virus evolves, it might be that in children, it is more able to present as hepatitis.”
 

A version of this article first appeared on Medscape.com.

This article was updated 4/22/22.

The U.S. Centers for Disease Control and Prevention has issued a health alert regarding severe hepatitis in young children after several cases have been reported in Alabama. Public health officials in the United Kingdom are also investigating more than 100 cases. While the source of the infections is unknown, “a possible association between pediatric hepatitis and adenovirus infection is currently under investigation,” according to the CDC alert.

Internationally, 108 cases have been reported in the United Kingdom, with 79 cases occurring in England. There are three documented cases in Spain, and similar cases are being reported in Denmark and the Netherlands, according to an article in Science. In the United Kingdom, cases have been reported in children up to 16 years old, but most affected children are between 2 and 5 years old. Eight children in the United Kingdom have required liver transplants.

On April 14, the CDC said that nine cases have been recorded in Alabama since the fall of 2021. All of these cases have been in children between 1 and 6 years old, and two children have needed liver transplants. Two additional cases have been reported in North Carolina, according to Stat News, and both children have since recovered.

Hepatitis A, B, C, D, and E viruses—common causes of hepatitis—have been ruled out in the U.K. and Spanish cases. More than three-fourths (77%) of the children sickened in the United Kingdom and all nine cases in Alabama have tested positive for a form of the adenovirus. While adenovirus can cause hepatitis in children, it is usually in those who are immunocompromised.

The CDC health alert advises clinicians who have cases of unexplained hepatitis in children to test for adenovirus and report these cases to the CDC as well as state public health authorities. The agency recommends nucleic acid amplification testing to detect adenovirus using respiratory swabs, stool samples or rectal swabs, or blood.

Officials are exploring whether these cases are linked to a version of the virus called adenovirus 41, which is associated with gut inflammation. The most recent case in Alabama was reported in February, and five of the nine children in the state with these puzzling cases of hepatitis have tested positive for adenovirus 41.

There have yet to be any links among the cases in Alabama or North Carolina, and investigators in the United Kingdom have also not found any connections in their cases, STAT News reports.

“CDC is working with state health departments to see if there are additional U.S. cases and what may be causing these cases,” said Kristen Nordlund, a CDC spokesperson, in a statement to STAT News. “At this time, adenovirus may be the cause for these, but investigators are still learning more – including ruling out the more common causes of hepatitis.”

Looking for other explanations

None of the children in the United States with hepatitis had COVID-19, but a few children in the United Kingdom have tested positive for the virus; none of these children have received the COVID-19 vaccine.

While the U.K. Health Security Agency says their investigation “continues to point toward a link to adenovirus infection,” they are also considering other contributing factors such as an environmental cause or COVID-19.

“COVID has been consistently shown to increase liver test numbers,” Nancy Reau, MD, the section chief of hepatology at Rush University in Chicago, said in an interview with this news organization. “It has been shown to cause other organ involvement besides just pulmonary symptoms and respiratory failure. As this virus evolves, it might be that in children, it is more able to present as hepatitis.”
 

A version of this article first appeared on Medscape.com.

This article was updated 4/22/22.

A widely approved vaccine for meningitis may provide up to 40% protection against gonorrhea in young adults and adolescents, according to new research. This moderate efficacy paired with a targeted risk-based approach could reduce cases as well as lead to health care savings over 10 years, an additional modeling study showed.

The results – in three linked papers – were published in The Lancet Infectious Diseases.

Gonorrhea, caused by the bacterium Neisseria gonorrhoeae, is the second most commonly reported sexually transmitted infection in the United States, according to the Centers for Disease Control and Prevention. Globally, the World Health Organization estimates that there were 82.4 million new cases in people aged 15-49 in 2020. At the same time, it is becoming more difficult to treat the infection because of the increasing prevalence of drug-resistant strains of N. gonorrhoeae.

“New approaches, such as vaccination, are needed as long-term strategies to prevent gonorrhea and address the emerging threat of antimicrobial resistance,” Winston Abara, MD, PhD, Division of STD Prevention, Centers for Disease Control and Prevention, and colleagues wrote.

While there is currently no vaccine for gonorrhea, observational studies have found an association between a meningococcal serogroup B vaccine and reduced gonorrhea cases. One study in New Zealand found that people vaccinated with the MeNZB vaccine, which was produced to control an outbreak of meningococcal disease in the country, were 31% less likely to contract gonorrhea.

This cross-reactivity comes about because Neisseria meningitidis, the bacterium that can cause meningitis, is closely related to N. gonorrhoeae, Joseph Alex Duncan, MD, PhD, associate professor of medicine, Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, said in an interview. He was not involved with the research. The thought is that “a large proportion of the proteins that are in the vaccine also recognize proteins from Neisseria gonorrhea, because the bacteria are so similar at the genetic level,” he said.

To see if this association was still found for the four-component serogroup B meningococcal vaccine (MenB-4C), which is now widely available, Dr. Abara and colleagues looked through health records to identify laboratory-confirmed gonorrhea and chlamydia infections in adolescents and young adults in New York City and Philadelphia. All individuals included in the analysis were age 16-23 and all infections occurred between Jan. 1, 2016, and Dec. 31, 2018. These infections were then linked to vaccination records to determine individuals’ MenB-4C vaccination status. Complete vaccination was defined as two MenB-4C doses, delivered 30-180 days apart.

The research team identified over 167,700 infections, including 18,099 gonococcal infections, 124,876 chlamydial infections, and 24,731 coinfections, among 109,737 individuals. A total of 7,692 individuals had received at least one shot of the vaccine, and 3,660 people were fully vaccinated. Full MenB-4C vaccination was estimated to be 40% protective (APR 0.60; P < .0001) against gonorrhea, and partial vaccination was 26% protective (APR 0.74; P = .0012).

“The findings of our study add to the body of evidence that demonstrates that the MenB-4C may offer cross-protection against Neisseria gonorrhoeae, and it supports feasibility of an effective gonococcal vaccine with implications for gonorrhea prevention and control,” Dr. Abara told this news organization.

A second study conducted in South Australia looked at the effectiveness of the MenB-4C vaccine against meningitis and gonorrhea as part of a vaccination program. Using infection data from the Government of South Australia and vaccination records from the Australian Immunization Register, researchers identified individuals born between Feb. 1, 1998, and Feb. 1, 2005, with a documented gonorrhea or chlamydia infection between Feb. 1, 2019, and Jan. 31, 2021. Individuals with chlamydia served as the controls to account for similar sexual behavioral risks.

The analysis included 512 individuals with 575 cases of gonorrhea and 3,140 individuals with 3,847 episodes of chlamydia. In this group, the estimated vaccine effectiveness against gonorrhea was 32.7% (95% confidence interval, 8.3-50.6) in individuals who were fully vaccinated and 32.6% (95% CI, 10.6-49.1) in those who had received at least one dose of the MenB-4C.

While these findings are “confirmatory” because they showed results similar to those in previous observational studies, they are still exciting, Dr. Duncan said. “Up until now, we really haven’t had any real progress in knowing what type of immune responses could actually be protective from the disease,” he said. “These observational studies have really reinvigorated the Neisseria gonorrhea vaccine research community.”

A vaccine with moderate efficacy – like the protection demonstrated in both studies – could lead to a significant reduction in cases, he noted. A 2015 Australian modeling study estimated that a nonwaning vaccine with 20% efficacy could reduce cases by 40% over 20 years. Focusing on vaccinating higher-risk groups could also have an “outsize impact,” said Jeanne Marrazzo, MD, director, Division of Infectious Diseases, UAB Medicine, Birmingham, Alabama, in an interview. In the third study published in The Lancet, researchers estimated the possible reduction of cases and the potential health care cost savings in England in a vaccination effort focusing on men who have sex with men (MSM) at high risk for gonorrhea infection. They predicted that a vaccine with 31% efficacy could prevent 110,200 cases in MSM and save about £8 million ($10.4 million) over 10 years.

Both Dr. Duncan and Dr. Marrazzo agreed that clinical trials are needed to tease out whether the decrease in gonorrhea cases is due to the MenB-4C vaccine or the association is incidental. There are two ongoing clinical trials, one in Australia and one in the United States. Dr. Marrazzo leads the U.S. multicenter study, which also has two locations in Bangkok. The trial will also look at whether vaccination protection varies by the location of gonococcal infection: urethra, rectum, cervix, or pharynx. The two new observational studies did not distinguish the different sites of infection.

Dr. Marrazzo’s trial has enrolled almost 500 individuals so far, with the goal of enrolling over 2,000 participants in total. She hopes to see results by late 2023. “It’s a pretty ambitious effort, but I’m hoping it will give us not only a definitive answer in terms of reduction in infection by anatomic site,” she said, but “also give us a lot of information about how the immune response works to protect you from getting gonorrhea if you do get the vaccine.”

Dr. Duncan has received research grants from the National Institutes of Health. Dr. Marrazzo leads a clinical trial of the MenB-4C vaccine sponsored by the National Institute of Allergy and Infectious Diseases.

A version of this article first appeared on Medscape.com.

A widely approved vaccine for meningitis may provide up to 40% protection against gonorrhea in young adults and adolescents, according to new research. This moderate efficacy paired with a targeted risk-based approach could reduce cases as well as lead to health care savings over 10 years, an additional modeling study showed.

The results – in three linked papers – were published in The Lancet Infectious Diseases.

Gonorrhea, caused by the bacterium Neisseria gonorrhoeae, is the second most commonly reported sexually transmitted infection in the United States, according to the Centers for Disease Control and Prevention. Globally, the World Health Organization estimates that there were 82.4 million new cases in people aged 15-49 in 2020. At the same time, it is becoming more difficult to treat the infection because of the increasing prevalence of drug-resistant strains of N. gonorrhoeae.

“New approaches, such as vaccination, are needed as long-term strategies to prevent gonorrhea and address the emerging threat of antimicrobial resistance,” Winston Abara, MD, PhD, Division of STD Prevention, Centers for Disease Control and Prevention, and colleagues wrote.

While there is currently no vaccine for gonorrhea, observational studies have found an association between a meningococcal serogroup B vaccine and reduced gonorrhea cases. One study in New Zealand found that people vaccinated with the MeNZB vaccine, which was produced to control an outbreak of meningococcal disease in the country, were 31% less likely to contract gonorrhea.

This cross-reactivity comes about because Neisseria meningitidis, the bacterium that can cause meningitis, is closely related to N. gonorrhoeae, Joseph Alex Duncan, MD, PhD, associate professor of medicine, Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, said in an interview. He was not involved with the research. The thought is that “a large proportion of the proteins that are in the vaccine also recognize proteins from Neisseria gonorrhea, because the bacteria are so similar at the genetic level,” he said.

To see if this association was still found for the four-component serogroup B meningococcal vaccine (MenB-4C), which is now widely available, Dr. Abara and colleagues looked through health records to identify laboratory-confirmed gonorrhea and chlamydia infections in adolescents and young adults in New York City and Philadelphia. All individuals included in the analysis were age 16-23 and all infections occurred between Jan. 1, 2016, and Dec. 31, 2018. These infections were then linked to vaccination records to determine individuals’ MenB-4C vaccination status. Complete vaccination was defined as two MenB-4C doses, delivered 30-180 days apart.

The research team identified over 167,700 infections, including 18,099 gonococcal infections, 124,876 chlamydial infections, and 24,731 coinfections, among 109,737 individuals. A total of 7,692 individuals had received at least one shot of the vaccine, and 3,660 people were fully vaccinated. Full MenB-4C vaccination was estimated to be 40% protective (APR 0.60; P < .0001) against gonorrhea, and partial vaccination was 26% protective (APR 0.74; P = .0012).

“The findings of our study add to the body of evidence that demonstrates that the MenB-4C may offer cross-protection against Neisseria gonorrhoeae, and it supports feasibility of an effective gonococcal vaccine with implications for gonorrhea prevention and control,” Dr. Abara told this news organization.

A second study conducted in South Australia looked at the effectiveness of the MenB-4C vaccine against meningitis and gonorrhea as part of a vaccination program. Using infection data from the Government of South Australia and vaccination records from the Australian Immunization Register, researchers identified individuals born between Feb. 1, 1998, and Feb. 1, 2005, with a documented gonorrhea or chlamydia infection between Feb. 1, 2019, and Jan. 31, 2021. Individuals with chlamydia served as the controls to account for similar sexual behavioral risks.

The analysis included 512 individuals with 575 cases of gonorrhea and 3,140 individuals with 3,847 episodes of chlamydia. In this group, the estimated vaccine effectiveness against gonorrhea was 32.7% (95% confidence interval, 8.3-50.6) in individuals who were fully vaccinated and 32.6% (95% CI, 10.6-49.1) in those who had received at least one dose of the MenB-4C.

While these findings are “confirmatory” because they showed results similar to those in previous observational studies, they are still exciting, Dr. Duncan said. “Up until now, we really haven’t had any real progress in knowing what type of immune responses could actually be protective from the disease,” he said. “These observational studies have really reinvigorated the Neisseria gonorrhea vaccine research community.”

A vaccine with moderate efficacy – like the protection demonstrated in both studies – could lead to a significant reduction in cases, he noted. A 2015 Australian modeling study estimated that a nonwaning vaccine with 20% efficacy could reduce cases by 40% over 20 years. Focusing on vaccinating higher-risk groups could also have an “outsize impact,” said Jeanne Marrazzo, MD, director, Division of Infectious Diseases, UAB Medicine, Birmingham, Alabama, in an interview. In the third study published in The Lancet, researchers estimated the possible reduction of cases and the potential health care cost savings in England in a vaccination effort focusing on men who have sex with men (MSM) at high risk for gonorrhea infection. They predicted that a vaccine with 31% efficacy could prevent 110,200 cases in MSM and save about £8 million ($10.4 million) over 10 years.

Both Dr. Duncan and Dr. Marrazzo agreed that clinical trials are needed to tease out whether the decrease in gonorrhea cases is due to the MenB-4C vaccine or the association is incidental. There are two ongoing clinical trials, one in Australia and one in the United States. Dr. Marrazzo leads the U.S. multicenter study, which also has two locations in Bangkok. The trial will also look at whether vaccination protection varies by the location of gonococcal infection: urethra, rectum, cervix, or pharynx. The two new observational studies did not distinguish the different sites of infection.

Dr. Marrazzo’s trial has enrolled almost 500 individuals so far, with the goal of enrolling over 2,000 participants in total. She hopes to see results by late 2023. “It’s a pretty ambitious effort, but I’m hoping it will give us not only a definitive answer in terms of reduction in infection by anatomic site,” she said, but “also give us a lot of information about how the immune response works to protect you from getting gonorrhea if you do get the vaccine.”

Dr. Duncan has received research grants from the National Institutes of Health. Dr. Marrazzo leads a clinical trial of the MenB-4C vaccine sponsored by the National Institute of Allergy and Infectious Diseases.

A version of this article first appeared on Medscape.com.

A widely approved vaccine for meningitis may provide up to 40% protection against gonorrhea in young adults and adolescents, according to new research. This moderate efficacy paired with a targeted risk-based approach could reduce cases as well as lead to health care savings over 10 years, an additional modeling study showed.

The results – in three linked papers – were published in The Lancet Infectious Diseases.

Gonorrhea, caused by the bacterium Neisseria gonorrhoeae, is the second most commonly reported sexually transmitted infection in the United States, according to the Centers for Disease Control and Prevention. Globally, the World Health Organization estimates that there were 82.4 million new cases in people aged 15-49 in 2020. At the same time, it is becoming more difficult to treat the infection because of the increasing prevalence of drug-resistant strains of N. gonorrhoeae.

“New approaches, such as vaccination, are needed as long-term strategies to prevent gonorrhea and address the emerging threat of antimicrobial resistance,” Winston Abara, MD, PhD, Division of STD Prevention, Centers for Disease Control and Prevention, and colleagues wrote.

While there is currently no vaccine for gonorrhea, observational studies have found an association between a meningococcal serogroup B vaccine and reduced gonorrhea cases. One study in New Zealand found that people vaccinated with the MeNZB vaccine, which was produced to control an outbreak of meningococcal disease in the country, were 31% less likely to contract gonorrhea.

This cross-reactivity comes about because Neisseria meningitidis, the bacterium that can cause meningitis, is closely related to N. gonorrhoeae, Joseph Alex Duncan, MD, PhD, associate professor of medicine, Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, said in an interview. He was not involved with the research. The thought is that “a large proportion of the proteins that are in the vaccine also recognize proteins from Neisseria gonorrhea, because the bacteria are so similar at the genetic level,” he said.

To see if this association was still found for the four-component serogroup B meningococcal vaccine (MenB-4C), which is now widely available, Dr. Abara and colleagues looked through health records to identify laboratory-confirmed gonorrhea and chlamydia infections in adolescents and young adults in New York City and Philadelphia. All individuals included in the analysis were age 16-23 and all infections occurred between Jan. 1, 2016, and Dec. 31, 2018. These infections were then linked to vaccination records to determine individuals’ MenB-4C vaccination status. Complete vaccination was defined as two MenB-4C doses, delivered 30-180 days apart.

The research team identified over 167,700 infections, including 18,099 gonococcal infections, 124,876 chlamydial infections, and 24,731 coinfections, among 109,737 individuals. A total of 7,692 individuals had received at least one shot of the vaccine, and 3,660 people were fully vaccinated. Full MenB-4C vaccination was estimated to be 40% protective (APR 0.60; P < .0001) against gonorrhea, and partial vaccination was 26% protective (APR 0.74; P = .0012).

“The findings of our study add to the body of evidence that demonstrates that the MenB-4C may offer cross-protection against Neisseria gonorrhoeae, and it supports feasibility of an effective gonococcal vaccine with implications for gonorrhea prevention and control,” Dr. Abara told this news organization.

A second study conducted in South Australia looked at the effectiveness of the MenB-4C vaccine against meningitis and gonorrhea as part of a vaccination program. Using infection data from the Government of South Australia and vaccination records from the Australian Immunization Register, researchers identified individuals born between Feb. 1, 1998, and Feb. 1, 2005, with a documented gonorrhea or chlamydia infection between Feb. 1, 2019, and Jan. 31, 2021. Individuals with chlamydia served as the controls to account for similar sexual behavioral risks.

The analysis included 512 individuals with 575 cases of gonorrhea and 3,140 individuals with 3,847 episodes of chlamydia. In this group, the estimated vaccine effectiveness against gonorrhea was 32.7% (95% confidence interval, 8.3-50.6) in individuals who were fully vaccinated and 32.6% (95% CI, 10.6-49.1) in those who had received at least one dose of the MenB-4C.

While these findings are “confirmatory” because they showed results similar to those in previous observational studies, they are still exciting, Dr. Duncan said. “Up until now, we really haven’t had any real progress in knowing what type of immune responses could actually be protective from the disease,” he said. “These observational studies have really reinvigorated the Neisseria gonorrhea vaccine research community.”

A vaccine with moderate efficacy – like the protection demonstrated in both studies – could lead to a significant reduction in cases, he noted. A 2015 Australian modeling study estimated that a nonwaning vaccine with 20% efficacy could reduce cases by 40% over 20 years. Focusing on vaccinating higher-risk groups could also have an “outsize impact,” said Jeanne Marrazzo, MD, director, Division of Infectious Diseases, UAB Medicine, Birmingham, Alabama, in an interview. In the third study published in The Lancet, researchers estimated the possible reduction of cases and the potential health care cost savings in England in a vaccination effort focusing on men who have sex with men (MSM) at high risk for gonorrhea infection. They predicted that a vaccine with 31% efficacy could prevent 110,200 cases in MSM and save about £8 million ($10.4 million) over 10 years.

Both Dr. Duncan and Dr. Marrazzo agreed that clinical trials are needed to tease out whether the decrease in gonorrhea cases is due to the MenB-4C vaccine or the association is incidental. There are two ongoing clinical trials, one in Australia and one in the United States. Dr. Marrazzo leads the U.S. multicenter study, which also has two locations in Bangkok. The trial will also look at whether vaccination protection varies by the location of gonococcal infection: urethra, rectum, cervix, or pharynx. The two new observational studies did not distinguish the different sites of infection.

Dr. Marrazzo’s trial has enrolled almost 500 individuals so far, with the goal of enrolling over 2,000 participants in total. She hopes to see results by late 2023. “It’s a pretty ambitious effort, but I’m hoping it will give us not only a definitive answer in terms of reduction in infection by anatomic site,” she said, but “also give us a lot of information about how the immune response works to protect you from getting gonorrhea if you do get the vaccine.”

Dr. Duncan has received research grants from the National Institutes of Health. Dr. Marrazzo leads a clinical trial of the MenB-4C vaccine sponsored by the National Institute of Allergy and Infectious Diseases.

A version of this article first appeared on Medscape.com.

BOSTON – Treatment with apremilast (Otezla) did not significantly affect vascular inflammation in patients with psoriasis but was associated with a generally beneficial effect on biomarkers associated with heart disease, lipid metabolism, and glucose metabolism, in a study presented at the 2022 American Academy of Dermatology annual meeting.

In the phase 4, open-label, single arm trial, participants also lost subcutaneous and visceral fat after 16 weeks on the oral medication, a phosphodiesterase 4 (PDE4) inhibitor, and maintained that loss at 52 weeks.

People with psoriasis have an increased risk of obesity, type 2 diabetes, and cardiovascular events. Patients with more significant psoriasis “tend to die about 5 years younger than they should, based on their risk factors for mortality,” Joel Gelfand, MD, MSCE, professor of dermatology and epidemiology and vice chair of clinical research in dermatology at the University of Pennsylvania Perelman School of Medicine, Philadelphia, told this news organization.

He led the research and presented the findings at the AAD meeting March 26. “As a result, there has been a keen interest in understanding how psoriasis therapies impact cardiovascular risk, the idea being that by controlling inflammation, you may lower the risk of these patients developing cardiovascular disease over time,” he said.

Previous trials looking at the effect of psoriasis therapies on vascular inflammation “have been, for the most part, inconclusive,” Michael Garshick, MD, a cardiologist at NYU Langone Health, told this news organization. Dr. Garshick was not involved with the research. A 2021 systematic review of psoriasis clinicals trials reported that the tumor necrosis factor (TNF) blocker adalimumab (Humira) and phototherapy had the greatest effect on cardiometabolic markers, while ustekinumab (Stelara), an interleukin (IL)-12 and IL-23 antagonist, was the only treatment that improved vascular inflammation. These variable findings make this area “ripe for study,” noted Dr. Garshick.

To observe how apremilast, which is approved by the FDA for treating psoriasis and psoriatic arthritis, affected vascular inflammation, adiposity, and blood-based cardiometabolic markers, Dr. Gelfand organized an open-label study in adults with moderate-to-severe psoriasis. All participants were 18 years or older, had psoriasis for at least 6 months, and were candidates for systemic therapy. All patients underwent FDG PET/CT scans to assess aortic vascular inflammation and had blood work at baseline. Of the 70 patients originally enrolled in the study, 60 remained in the study at week 16, including 57 who underwent imaging for the second time. Thirty-nine participants remained in the study until week 52, and all except one had another scan.

The average age of participants was 47 years, and their mean BMI was 30. More than 80% of participants were White (83%) and 77% were male. The study population had lived with psoriasis for an average of 16 years and 8 patients also had psoriatic arthritis. At baseline, on average, participants had a Psoriasis Area and Severity Index (PASI) score of 18.62, a dermatology life quality index (DLQI) score of 11.60, and 22% of participants’ BSA (body surface area) were affected. The mean TBRmax, the marker for vascular inflammation, was 1.61.

Treatment responses were as expected for apremilast, with 35% of patients achieving PASI 75 and 65% of participants reporting DLQI scores of 5 or less by 16 weeks. At 52 weeks, 31% of the cohort had achieved PASI 75, and 67% reported DLQI score of 5 or higher. All psoriasis endpoints had improved since baseline (P = .001).

Throughout the study period, there was no significant change in TBRmax. However, in a sensitivity analysis, the 16 patients with a baseline TBRmax  of 1.6 or higher had an absolute reduction of 0.21 in TBR by week 52. “That suggests that maybe a subset of people who have higher levels of aortic inflammation at baseline may experience some reduction that portend, potentially, some health benefits over time,” Dr. Gelfand said. “Ultimately, I wouldn’t hang my hat on the finding,” he said, noting that additional research comparing the treatment to placebo is necessary.

Both visceral and subcutaneous adipose tissue (VAT and SAT) decreased by week 16, and this reduction was maintained through week 52. In the first 16 weeks of the study, VAT decreased by 5.32% (P = .0009), and SAT decreased by 5.53% (P = .0005). From baseline to 52 weeks, VAT decreased by 5.52% (P = .0148), and SAT decreased by 5.50% (P = .0096). There were no significant differences between week 16 and week 52 in VAT or SAT.

Of the 68 blood biomarkers analyzed, there were significant decreases in the inflammatory markers ferritin (P = .015) and IL-beta (P = .006), the lipid metabolism biomarker HDL-cholesterol efflux (P = .008), and ketone bodies (P = .006). There were also increases in the inflammatory marker IL-8 (P = .003), the lipid metabolism marker ApoA (P = .05), and insulin (P = .05). Ferritin was the only biomarker that was reduced on both week 16 and week 52.

“If you want to be a purist, this was a negative trial,” said Dr. Garshick, because apremilast was not found to decrease vascular inflammation; however, he noted that the biomarker changes “were hopeful secondary endpoints.” It could be, he said, that another outcome measure may be better able to show changes in vascular inflammation compared with FDG. “It’s always hard to figure out what a good surrogate endpoint is in cardiovascular trials,” he noted, “so it may be that FDG/PET is too noisy or not reliable enough to see the outcome that we want to see.”

Dr. Gelfand reports consulting fees/grants from Amgen, AbbVie, BMS, Boehringer Ingelheim, Janssen Biologics, Novartis Corp, Pfizer, and UCB (DSMB). He serves as the Deputy Editor for the Journal of Investigative Dermatology and the Chief Medical Editor at Healio Psoriatic Disease and receives honoraria for both roles. Dr. Garshick has received consulting fees from AbbVie.

A version of this article first appeared on Medscape.com.

BOSTON – Treatment with apremilast (Otezla) did not significantly affect vascular inflammation in patients with psoriasis but was associated with a generally beneficial effect on biomarkers associated with heart disease, lipid metabolism, and glucose metabolism, in a study presented at the 2022 American Academy of Dermatology annual meeting.

In the phase 4, open-label, single arm trial, participants also lost subcutaneous and visceral fat after 16 weeks on the oral medication, a phosphodiesterase 4 (PDE4) inhibitor, and maintained that loss at 52 weeks.

People with psoriasis have an increased risk of obesity, type 2 diabetes, and cardiovascular events. Patients with more significant psoriasis “tend to die about 5 years younger than they should, based on their risk factors for mortality,” Joel Gelfand, MD, MSCE, professor of dermatology and epidemiology and vice chair of clinical research in dermatology at the University of Pennsylvania Perelman School of Medicine, Philadelphia, told this news organization.

He led the research and presented the findings at the AAD meeting March 26. “As a result, there has been a keen interest in understanding how psoriasis therapies impact cardiovascular risk, the idea being that by controlling inflammation, you may lower the risk of these patients developing cardiovascular disease over time,” he said.

Previous trials looking at the effect of psoriasis therapies on vascular inflammation “have been, for the most part, inconclusive,” Michael Garshick, MD, a cardiologist at NYU Langone Health, told this news organization. Dr. Garshick was not involved with the research. A 2021 systematic review of psoriasis clinicals trials reported that the tumor necrosis factor (TNF) blocker adalimumab (Humira) and phototherapy had the greatest effect on cardiometabolic markers, while ustekinumab (Stelara), an interleukin (IL)-12 and IL-23 antagonist, was the only treatment that improved vascular inflammation. These variable findings make this area “ripe for study,” noted Dr. Garshick.

To observe how apremilast, which is approved by the FDA for treating psoriasis and psoriatic arthritis, affected vascular inflammation, adiposity, and blood-based cardiometabolic markers, Dr. Gelfand organized an open-label study in adults with moderate-to-severe psoriasis. All participants were 18 years or older, had psoriasis for at least 6 months, and were candidates for systemic therapy. All patients underwent FDG PET/CT scans to assess aortic vascular inflammation and had blood work at baseline. Of the 70 patients originally enrolled in the study, 60 remained in the study at week 16, including 57 who underwent imaging for the second time. Thirty-nine participants remained in the study until week 52, and all except one had another scan.

The average age of participants was 47 years, and their mean BMI was 30. More than 80% of participants were White (83%) and 77% were male. The study population had lived with psoriasis for an average of 16 years and 8 patients also had psoriatic arthritis. At baseline, on average, participants had a Psoriasis Area and Severity Index (PASI) score of 18.62, a dermatology life quality index (DLQI) score of 11.60, and 22% of participants’ BSA (body surface area) were affected. The mean TBRmax, the marker for vascular inflammation, was 1.61.

Treatment responses were as expected for apremilast, with 35% of patients achieving PASI 75 and 65% of participants reporting DLQI scores of 5 or less by 16 weeks. At 52 weeks, 31% of the cohort had achieved PASI 75, and 67% reported DLQI score of 5 or higher. All psoriasis endpoints had improved since baseline (P = .001).

Throughout the study period, there was no significant change in TBRmax. However, in a sensitivity analysis, the 16 patients with a baseline TBRmax  of 1.6 or higher had an absolute reduction of 0.21 in TBR by week 52. “That suggests that maybe a subset of people who have higher levels of aortic inflammation at baseline may experience some reduction that portend, potentially, some health benefits over time,” Dr. Gelfand said. “Ultimately, I wouldn’t hang my hat on the finding,” he said, noting that additional research comparing the treatment to placebo is necessary.

Both visceral and subcutaneous adipose tissue (VAT and SAT) decreased by week 16, and this reduction was maintained through week 52. In the first 16 weeks of the study, VAT decreased by 5.32% (P = .0009), and SAT decreased by 5.53% (P = .0005). From baseline to 52 weeks, VAT decreased by 5.52% (P = .0148), and SAT decreased by 5.50% (P = .0096). There were no significant differences between week 16 and week 52 in VAT or SAT.

Of the 68 blood biomarkers analyzed, there were significant decreases in the inflammatory markers ferritin (P = .015) and IL-beta (P = .006), the lipid metabolism biomarker HDL-cholesterol efflux (P = .008), and ketone bodies (P = .006). There were also increases in the inflammatory marker IL-8 (P = .003), the lipid metabolism marker ApoA (P = .05), and insulin (P = .05). Ferritin was the only biomarker that was reduced on both week 16 and week 52.

“If you want to be a purist, this was a negative trial,” said Dr. Garshick, because apremilast was not found to decrease vascular inflammation; however, he noted that the biomarker changes “were hopeful secondary endpoints.” It could be, he said, that another outcome measure may be better able to show changes in vascular inflammation compared with FDG. “It’s always hard to figure out what a good surrogate endpoint is in cardiovascular trials,” he noted, “so it may be that FDG/PET is too noisy or not reliable enough to see the outcome that we want to see.”

Dr. Gelfand reports consulting fees/grants from Amgen, AbbVie, BMS, Boehringer Ingelheim, Janssen Biologics, Novartis Corp, Pfizer, and UCB (DSMB). He serves as the Deputy Editor for the Journal of Investigative Dermatology and the Chief Medical Editor at Healio Psoriatic Disease and receives honoraria for both roles. Dr. Garshick has received consulting fees from AbbVie.

A version of this article first appeared on Medscape.com.

BOSTON – Treatment with apremilast (Otezla) did not significantly affect vascular inflammation in patients with psoriasis but was associated with a generally beneficial effect on biomarkers associated with heart disease, lipid metabolism, and glucose metabolism, in a study presented at the 2022 American Academy of Dermatology annual meeting.

In the phase 4, open-label, single arm trial, participants also lost subcutaneous and visceral fat after 16 weeks on the oral medication, a phosphodiesterase 4 (PDE4) inhibitor, and maintained that loss at 52 weeks.

People with psoriasis have an increased risk of obesity, type 2 diabetes, and cardiovascular events. Patients with more significant psoriasis “tend to die about 5 years younger than they should, based on their risk factors for mortality,” Joel Gelfand, MD, MSCE, professor of dermatology and epidemiology and vice chair of clinical research in dermatology at the University of Pennsylvania Perelman School of Medicine, Philadelphia, told this news organization.

He led the research and presented the findings at the AAD meeting March 26. “As a result, there has been a keen interest in understanding how psoriasis therapies impact cardiovascular risk, the idea being that by controlling inflammation, you may lower the risk of these patients developing cardiovascular disease over time,” he said.

Previous trials looking at the effect of psoriasis therapies on vascular inflammation “have been, for the most part, inconclusive,” Michael Garshick, MD, a cardiologist at NYU Langone Health, told this news organization. Dr. Garshick was not involved with the research. A 2021 systematic review of psoriasis clinicals trials reported that the tumor necrosis factor (TNF) blocker adalimumab (Humira) and phototherapy had the greatest effect on cardiometabolic markers, while ustekinumab (Stelara), an interleukin (IL)-12 and IL-23 antagonist, was the only treatment that improved vascular inflammation. These variable findings make this area “ripe for study,” noted Dr. Garshick.

To observe how apremilast, which is approved by the FDA for treating psoriasis and psoriatic arthritis, affected vascular inflammation, adiposity, and blood-based cardiometabolic markers, Dr. Gelfand organized an open-label study in adults with moderate-to-severe psoriasis. All participants were 18 years or older, had psoriasis for at least 6 months, and were candidates for systemic therapy. All patients underwent FDG PET/CT scans to assess aortic vascular inflammation and had blood work at baseline. Of the 70 patients originally enrolled in the study, 60 remained in the study at week 16, including 57 who underwent imaging for the second time. Thirty-nine participants remained in the study until week 52, and all except one had another scan.

The average age of participants was 47 years, and their mean BMI was 30. More than 80% of participants were White (83%) and 77% were male. The study population had lived with psoriasis for an average of 16 years and 8 patients also had psoriatic arthritis. At baseline, on average, participants had a Psoriasis Area and Severity Index (PASI) score of 18.62, a dermatology life quality index (DLQI) score of 11.60, and 22% of participants’ BSA (body surface area) were affected. The mean TBRmax, the marker for vascular inflammation, was 1.61.

Treatment responses were as expected for apremilast, with 35% of patients achieving PASI 75 and 65% of participants reporting DLQI scores of 5 or less by 16 weeks. At 52 weeks, 31% of the cohort had achieved PASI 75, and 67% reported DLQI score of 5 or higher. All psoriasis endpoints had improved since baseline (P = .001).

Throughout the study period, there was no significant change in TBRmax. However, in a sensitivity analysis, the 16 patients with a baseline TBRmax  of 1.6 or higher had an absolute reduction of 0.21 in TBR by week 52. “That suggests that maybe a subset of people who have higher levels of aortic inflammation at baseline may experience some reduction that portend, potentially, some health benefits over time,” Dr. Gelfand said. “Ultimately, I wouldn’t hang my hat on the finding,” he said, noting that additional research comparing the treatment to placebo is necessary.

Both visceral and subcutaneous adipose tissue (VAT and SAT) decreased by week 16, and this reduction was maintained through week 52. In the first 16 weeks of the study, VAT decreased by 5.32% (P = .0009), and SAT decreased by 5.53% (P = .0005). From baseline to 52 weeks, VAT decreased by 5.52% (P = .0148), and SAT decreased by 5.50% (P = .0096). There were no significant differences between week 16 and week 52 in VAT or SAT.

Of the 68 blood biomarkers analyzed, there were significant decreases in the inflammatory markers ferritin (P = .015) and IL-beta (P = .006), the lipid metabolism biomarker HDL-cholesterol efflux (P = .008), and ketone bodies (P = .006). There were also increases in the inflammatory marker IL-8 (P = .003), the lipid metabolism marker ApoA (P = .05), and insulin (P = .05). Ferritin was the only biomarker that was reduced on both week 16 and week 52.

“If you want to be a purist, this was a negative trial,” said Dr. Garshick, because apremilast was not found to decrease vascular inflammation; however, he noted that the biomarker changes “were hopeful secondary endpoints.” It could be, he said, that another outcome measure may be better able to show changes in vascular inflammation compared with FDG. “It’s always hard to figure out what a good surrogate endpoint is in cardiovascular trials,” he noted, “so it may be that FDG/PET is too noisy or not reliable enough to see the outcome that we want to see.”

Dr. Gelfand reports consulting fees/grants from Amgen, AbbVie, BMS, Boehringer Ingelheim, Janssen Biologics, Novartis Corp, Pfizer, and UCB (DSMB). He serves as the Deputy Editor for the Journal of Investigative Dermatology and the Chief Medical Editor at Healio Psoriatic Disease and receives honoraria for both roles. Dr. Garshick has received consulting fees from AbbVie.

A version of this article first appeared on Medscape.com.

BOSTON – Dupilumab, a human monoclonal IgG4 antibody, was an effective treatment for prurigo nodularis (PN), improving itching and skin lesions after 12 and 24 weeks of treatment, in a phase 3 trial presented at the American Academy of Dermatology 2022 Annual Meeting.

There are currently no Food and Drug Administration–approved systemic therapies for PN. Although several treatments for the disease are used off label for the condition, such as ultraviolet light therapy and immunosuppressive agents, moderate to severe PN is usually difficult to control, noted Gil Yosipovitch, MD, director of the Miami Itch Center at the University of Miami Miller School of Medicine, Florida. He led the research and presented the findings at the conference.

“Many dermatologists feel very uncomfortable dealing with these patients because they suffer from chronicity, they are miserable, and previously, the drugs didn’t work well,” Dr. Yosipovitch told this news organization. The results from this trial “are very promising,” he said. “It opens a new field of treatment for itchy conditions.”

The trial, named LIBERTY-PN PRIME2, enrolled patients aged 18-80 who had been living with PN for at least 3 months. Patients had at least 20 lesions at baseline as well as severe itch, defined as a score of 7 or greater on the Worst Itch Numerical Rating Scale (WI-NRS). The scale ranges from 0 (no itch) to 10 (worst itch imaginable). Participants also had a history of treatment failure with medium to super-potent topical corticosteroids (TCSs), or treatment with TCSs was not medically advisable for them.

The randomized, double-blinded study enrolled 160 adults with PN. Of those, 78 were assigned to the treatment arm and received a 600-mg loading dose of dupilumab, administered subcutaneously, followed by 300-mg doses every 2 weeks for 24 weeks; 82 patients were allocated to receive placebo.

During the study, 25 patients in the placebo arm discontinued treatment. In the treatment arm, one patient was not treated and two discontinued treatment due to lack of efficacy.

The primary endpoint of the study was a reduction of at least 4 points on the WI-NRS at 12 weeks. Secondary endpoints included at least a 4-point WI-NRS reduction at 24 weeks and clear to nearly clear skin, defined as having a score of 0 or 1 on the Investigator’s Global Assessment PN-Stage (IGN PN-S). The scale ranges from 0 (clear) to 4 (severe).

At 12 weeks, 37.2% of patients given dupilumab reported a reduction of at least 4 points in WI-NRS, compared with 22.0% of patients given placebo (P = .0216). By 24 weeks, 57.7% of adults who received dupilumab achieved a greater than or equal to 4-point reduction in WI-NRS, compared with 19.5% of those who received placebo (P < .0001). Additionally, 44.9% of participants in the treatment arm achieved a score of 0 or 1 on the IGA PN-S, compared with 15.9% of those in the placebo arm (P < .0001).

Forty-four participants who received dupilumab (57.1%) and 42 participants who received placebo (51.2%) reported at least one treatment-emergent adverse event (TEAE) during the study, though none of these events were serious. The most common TEAE in the study was headache, occurring in five patients taking placebo and four patients receiving dupilumab. In the dupilumab group, there were five cases of herpes virus infection, four non-herpes skin infections, and three cases of conjunctivitis. In the placebo group, seven non-herpes skin infections were reported.

Sanofi and Regeneron, who jointly developed dupilumab, plan to file for regulatory approval for dupilumab for PN “around the world” in the first half of this year, according to a press release.

“It’s great news and a step in the right direction,” Sarina Elmariah, MD, PhD, a dermatologist at Massachusetts General Hospital and instructor of dermatology at Harvard Medical School, both in Boston, told this news organization. She was not involved with the research.

“We’re finally starting to shed light on this condition and its pathogenesis,” she said. She noted that other potential therapeutics for PN are also in development. “It’s reflective of the fact that we are making strides in this area.”

Sanofi and Regeneron Pharmaceuticals sponsored the LIBERTY-PN PRIME2 trial. Dr. Yosipovitch has reported financial relationships with Bellus Health, Eli Lilly, Galderma, GSK, Kiniksa Pharmaceuticals, LEO Pharma, Novartis, Pfizer, Regeneron, Sanofi, and Trevi Therapeutics. Dr. Elmariah is on the advisory boards of Sanofi, Galderma, and Trevi Therapeutics.

A version of this article first appeared on Medscape.com.

BOSTON – Dupilumab, a human monoclonal IgG4 antibody, was an effective treatment for prurigo nodularis (PN), improving itching and skin lesions after 12 and 24 weeks of treatment, in a phase 3 trial presented at the American Academy of Dermatology 2022 Annual Meeting.

There are currently no Food and Drug Administration–approved systemic therapies for PN. Although several treatments for the disease are used off label for the condition, such as ultraviolet light therapy and immunosuppressive agents, moderate to severe PN is usually difficult to control, noted Gil Yosipovitch, MD, director of the Miami Itch Center at the University of Miami Miller School of Medicine, Florida. He led the research and presented the findings at the conference.

“Many dermatologists feel very uncomfortable dealing with these patients because they suffer from chronicity, they are miserable, and previously, the drugs didn’t work well,” Dr. Yosipovitch told this news organization. The results from this trial “are very promising,” he said. “It opens a new field of treatment for itchy conditions.”

The trial, named LIBERTY-PN PRIME2, enrolled patients aged 18-80 who had been living with PN for at least 3 months. Patients had at least 20 lesions at baseline as well as severe itch, defined as a score of 7 or greater on the Worst Itch Numerical Rating Scale (WI-NRS). The scale ranges from 0 (no itch) to 10 (worst itch imaginable). Participants also had a history of treatment failure with medium to super-potent topical corticosteroids (TCSs), or treatment with TCSs was not medically advisable for them.

The randomized, double-blinded study enrolled 160 adults with PN. Of those, 78 were assigned to the treatment arm and received a 600-mg loading dose of dupilumab, administered subcutaneously, followed by 300-mg doses every 2 weeks for 24 weeks; 82 patients were allocated to receive placebo.

During the study, 25 patients in the placebo arm discontinued treatment. In the treatment arm, one patient was not treated and two discontinued treatment due to lack of efficacy.

The primary endpoint of the study was a reduction of at least 4 points on the WI-NRS at 12 weeks. Secondary endpoints included at least a 4-point WI-NRS reduction at 24 weeks and clear to nearly clear skin, defined as having a score of 0 or 1 on the Investigator’s Global Assessment PN-Stage (IGN PN-S). The scale ranges from 0 (clear) to 4 (severe).

At 12 weeks, 37.2% of patients given dupilumab reported a reduction of at least 4 points in WI-NRS, compared with 22.0% of patients given placebo (P = .0216). By 24 weeks, 57.7% of adults who received dupilumab achieved a greater than or equal to 4-point reduction in WI-NRS, compared with 19.5% of those who received placebo (P < .0001). Additionally, 44.9% of participants in the treatment arm achieved a score of 0 or 1 on the IGA PN-S, compared with 15.9% of those in the placebo arm (P < .0001).

Forty-four participants who received dupilumab (57.1%) and 42 participants who received placebo (51.2%) reported at least one treatment-emergent adverse event (TEAE) during the study, though none of these events were serious. The most common TEAE in the study was headache, occurring in five patients taking placebo and four patients receiving dupilumab. In the dupilumab group, there were five cases of herpes virus infection, four non-herpes skin infections, and three cases of conjunctivitis. In the placebo group, seven non-herpes skin infections were reported.

Sanofi and Regeneron, who jointly developed dupilumab, plan to file for regulatory approval for dupilumab for PN “around the world” in the first half of this year, according to a press release.

“It’s great news and a step in the right direction,” Sarina Elmariah, MD, PhD, a dermatologist at Massachusetts General Hospital and instructor of dermatology at Harvard Medical School, both in Boston, told this news organization. She was not involved with the research.

“We’re finally starting to shed light on this condition and its pathogenesis,” she said. She noted that other potential therapeutics for PN are also in development. “It’s reflective of the fact that we are making strides in this area.”

Sanofi and Regeneron Pharmaceuticals sponsored the LIBERTY-PN PRIME2 trial. Dr. Yosipovitch has reported financial relationships with Bellus Health, Eli Lilly, Galderma, GSK, Kiniksa Pharmaceuticals, LEO Pharma, Novartis, Pfizer, Regeneron, Sanofi, and Trevi Therapeutics. Dr. Elmariah is on the advisory boards of Sanofi, Galderma, and Trevi Therapeutics.

A version of this article first appeared on Medscape.com.

BOSTON – Dupilumab, a human monoclonal IgG4 antibody, was an effective treatment for prurigo nodularis (PN), improving itching and skin lesions after 12 and 24 weeks of treatment, in a phase 3 trial presented at the American Academy of Dermatology 2022 Annual Meeting.

There are currently no Food and Drug Administration–approved systemic therapies for PN. Although several treatments for the disease are used off label for the condition, such as ultraviolet light therapy and immunosuppressive agents, moderate to severe PN is usually difficult to control, noted Gil Yosipovitch, MD, director of the Miami Itch Center at the University of Miami Miller School of Medicine, Florida. He led the research and presented the findings at the conference.

“Many dermatologists feel very uncomfortable dealing with these patients because they suffer from chronicity, they are miserable, and previously, the drugs didn’t work well,” Dr. Yosipovitch told this news organization. The results from this trial “are very promising,” he said. “It opens a new field of treatment for itchy conditions.”

The trial, named LIBERTY-PN PRIME2, enrolled patients aged 18-80 who had been living with PN for at least 3 months. Patients had at least 20 lesions at baseline as well as severe itch, defined as a score of 7 or greater on the Worst Itch Numerical Rating Scale (WI-NRS). The scale ranges from 0 (no itch) to 10 (worst itch imaginable). Participants also had a history of treatment failure with medium to super-potent topical corticosteroids (TCSs), or treatment with TCSs was not medically advisable for them.

The randomized, double-blinded study enrolled 160 adults with PN. Of those, 78 were assigned to the treatment arm and received a 600-mg loading dose of dupilumab, administered subcutaneously, followed by 300-mg doses every 2 weeks for 24 weeks; 82 patients were allocated to receive placebo.

During the study, 25 patients in the placebo arm discontinued treatment. In the treatment arm, one patient was not treated and two discontinued treatment due to lack of efficacy.

The primary endpoint of the study was a reduction of at least 4 points on the WI-NRS at 12 weeks. Secondary endpoints included at least a 4-point WI-NRS reduction at 24 weeks and clear to nearly clear skin, defined as having a score of 0 or 1 on the Investigator’s Global Assessment PN-Stage (IGN PN-S). The scale ranges from 0 (clear) to 4 (severe).

At 12 weeks, 37.2% of patients given dupilumab reported a reduction of at least 4 points in WI-NRS, compared with 22.0% of patients given placebo (P = .0216). By 24 weeks, 57.7% of adults who received dupilumab achieved a greater than or equal to 4-point reduction in WI-NRS, compared with 19.5% of those who received placebo (P < .0001). Additionally, 44.9% of participants in the treatment arm achieved a score of 0 or 1 on the IGA PN-S, compared with 15.9% of those in the placebo arm (P < .0001).

Forty-four participants who received dupilumab (57.1%) and 42 participants who received placebo (51.2%) reported at least one treatment-emergent adverse event (TEAE) during the study, though none of these events were serious. The most common TEAE in the study was headache, occurring in five patients taking placebo and four patients receiving dupilumab. In the dupilumab group, there were five cases of herpes virus infection, four non-herpes skin infections, and three cases of conjunctivitis. In the placebo group, seven non-herpes skin infections were reported.

Sanofi and Regeneron, who jointly developed dupilumab, plan to file for regulatory approval for dupilumab for PN “around the world” in the first half of this year, according to a press release.

“It’s great news and a step in the right direction,” Sarina Elmariah, MD, PhD, a dermatologist at Massachusetts General Hospital and instructor of dermatology at Harvard Medical School, both in Boston, told this news organization. She was not involved with the research.

“We’re finally starting to shed light on this condition and its pathogenesis,” she said. She noted that other potential therapeutics for PN are also in development. “It’s reflective of the fact that we are making strides in this area.”

Sanofi and Regeneron Pharmaceuticals sponsored the LIBERTY-PN PRIME2 trial. Dr. Yosipovitch has reported financial relationships with Bellus Health, Eli Lilly, Galderma, GSK, Kiniksa Pharmaceuticals, LEO Pharma, Novartis, Pfizer, Regeneron, Sanofi, and Trevi Therapeutics. Dr. Elmariah is on the advisory boards of Sanofi, Galderma, and Trevi Therapeutics.

A version of this article first appeared on Medscape.com.