Residents

The Pharmacovigilance Risk Assessment Committee (PRAC) of the European Medicines Agency (EMA) has issued a reminder to healthcare professionals regarding the potential serious adverse reactions associated with Paxlovid when administered in combination with specific immunosuppressants.

These immunosuppressants, encompassing calcineurin inhibitors (tacrolimus and ciclosporin) and mTOR inhibitors (everolimus and sirolimus), possess a narrow safe dosage range. They are recognized for their role in diminishing the activity of the immune system and are typically prescribed for autoimmune conditions and organ transplant recipients.

The highlighted risk arises due to drug-drug interactions, which can compromise the body’s ability to eliminate these medicines effectively.

Paxlovid, also known as nirmatrelvir with ritonavir, is an antiviral medication used to treat COVID-19 in adults who do not require supplemental oxygen and who are at an increased risk of progressing to severe COVID-19. It should be administered as soon as possible after a diagnosis of COVID-19 has been made and within 5 days of symptom onset.

Conditional marketing authorization for Paxlovid was granted across the European Union (EU) on January 28, 2022, and subsequently transitioned to full marketing authorization on February 24, 2023.

Developed by Pfizer, Paxlovid exhibited an 89% reduction in the risk for hospitalization or death among unvaccinated individuals in a phase 2-3 clinical trial. This led the National Institutes of Health to prioritize Paxlovid over other COVID-19 treatments. Subsequent real-world studies have affirmed its effectiveness, even among the vaccinated.

When combining Paxlovid with tacrolimus, ciclosporin, everolimus, or sirolimus, healthcare professionals need to actively monitor their blood levels. This proactive approach is essential to mitigate the risk for drug-drug interactions and potential serious reactions. They should collaborate with a multidisciplinary team of specialists to navigate the complexities of administering these medications concurrently.

Further, Paxlovid must not be coadministered with medications highly reliant on CYP3A liver enzymes for elimination, such as the immunosuppressant voclosporin. When administered together, there is a risk for these drugs interfering with each other’s metabolism, potentially leading to altered blood levels, reduced effectiveness, or an increased risk for adverse reactions.

After a thorough review, PRAC has highlighted potential serious adverse reactions, including fatal cases, due to drug interactions between Paxlovid and specified immunosuppressants. Thus, it issued a direct healthcare professional communication (DHPC) to emphasize the recognized risk for these interactions, as previously outlined in Paxlovid’s product information.

The DHPC for Paxlovid will undergo further evaluation by EMA’s Committee for Medicinal Products for Human Use and, upon adoption, will be disseminated to healthcare professionals. The communication plan will include publication on the DHPCs page and in national registers across EU Member States.

A version of this article appeared on Medscape.com.

The Pharmacovigilance Risk Assessment Committee (PRAC) of the European Medicines Agency (EMA) has issued a reminder to healthcare professionals regarding the potential serious adverse reactions associated with Paxlovid when administered in combination with specific immunosuppressants.

These immunosuppressants, encompassing calcineurin inhibitors (tacrolimus and ciclosporin) and mTOR inhibitors (everolimus and sirolimus), possess a narrow safe dosage range. They are recognized for their role in diminishing the activity of the immune system and are typically prescribed for autoimmune conditions and organ transplant recipients.

The highlighted risk arises due to drug-drug interactions, which can compromise the body’s ability to eliminate these medicines effectively.

Paxlovid, also known as nirmatrelvir with ritonavir, is an antiviral medication used to treat COVID-19 in adults who do not require supplemental oxygen and who are at an increased risk of progressing to severe COVID-19. It should be administered as soon as possible after a diagnosis of COVID-19 has been made and within 5 days of symptom onset.

Conditional marketing authorization for Paxlovid was granted across the European Union (EU) on January 28, 2022, and subsequently transitioned to full marketing authorization on February 24, 2023.

Developed by Pfizer, Paxlovid exhibited an 89% reduction in the risk for hospitalization or death among unvaccinated individuals in a phase 2-3 clinical trial. This led the National Institutes of Health to prioritize Paxlovid over other COVID-19 treatments. Subsequent real-world studies have affirmed its effectiveness, even among the vaccinated.

When combining Paxlovid with tacrolimus, ciclosporin, everolimus, or sirolimus, healthcare professionals need to actively monitor their blood levels. This proactive approach is essential to mitigate the risk for drug-drug interactions and potential serious reactions. They should collaborate with a multidisciplinary team of specialists to navigate the complexities of administering these medications concurrently.

Further, Paxlovid must not be coadministered with medications highly reliant on CYP3A liver enzymes for elimination, such as the immunosuppressant voclosporin. When administered together, there is a risk for these drugs interfering with each other’s metabolism, potentially leading to altered blood levels, reduced effectiveness, or an increased risk for adverse reactions.

After a thorough review, PRAC has highlighted potential serious adverse reactions, including fatal cases, due to drug interactions between Paxlovid and specified immunosuppressants. Thus, it issued a direct healthcare professional communication (DHPC) to emphasize the recognized risk for these interactions, as previously outlined in Paxlovid’s product information.

The DHPC for Paxlovid will undergo further evaluation by EMA’s Committee for Medicinal Products for Human Use and, upon adoption, will be disseminated to healthcare professionals. The communication plan will include publication on the DHPCs page and in national registers across EU Member States.

A version of this article appeared on Medscape.com.

The Pharmacovigilance Risk Assessment Committee (PRAC) of the European Medicines Agency (EMA) has issued a reminder to healthcare professionals regarding the potential serious adverse reactions associated with Paxlovid when administered in combination with specific immunosuppressants.

These immunosuppressants, encompassing calcineurin inhibitors (tacrolimus and ciclosporin) and mTOR inhibitors (everolimus and sirolimus), possess a narrow safe dosage range. They are recognized for their role in diminishing the activity of the immune system and are typically prescribed for autoimmune conditions and organ transplant recipients.

The highlighted risk arises due to drug-drug interactions, which can compromise the body’s ability to eliminate these medicines effectively.

Paxlovid, also known as nirmatrelvir with ritonavir, is an antiviral medication used to treat COVID-19 in adults who do not require supplemental oxygen and who are at an increased risk of progressing to severe COVID-19. It should be administered as soon as possible after a diagnosis of COVID-19 has been made and within 5 days of symptom onset.

Conditional marketing authorization for Paxlovid was granted across the European Union (EU) on January 28, 2022, and subsequently transitioned to full marketing authorization on February 24, 2023.

Developed by Pfizer, Paxlovid exhibited an 89% reduction in the risk for hospitalization or death among unvaccinated individuals in a phase 2-3 clinical trial. This led the National Institutes of Health to prioritize Paxlovid over other COVID-19 treatments. Subsequent real-world studies have affirmed its effectiveness, even among the vaccinated.

When combining Paxlovid with tacrolimus, ciclosporin, everolimus, or sirolimus, healthcare professionals need to actively monitor their blood levels. This proactive approach is essential to mitigate the risk for drug-drug interactions and potential serious reactions. They should collaborate with a multidisciplinary team of specialists to navigate the complexities of administering these medications concurrently.

Further, Paxlovid must not be coadministered with medications highly reliant on CYP3A liver enzymes for elimination, such as the immunosuppressant voclosporin. When administered together, there is a risk for these drugs interfering with each other’s metabolism, potentially leading to altered blood levels, reduced effectiveness, or an increased risk for adverse reactions.

After a thorough review, PRAC has highlighted potential serious adverse reactions, including fatal cases, due to drug interactions between Paxlovid and specified immunosuppressants. Thus, it issued a direct healthcare professional communication (DHPC) to emphasize the recognized risk for these interactions, as previously outlined in Paxlovid’s product information.

The DHPC for Paxlovid will undergo further evaluation by EMA’s Committee for Medicinal Products for Human Use and, upon adoption, will be disseminated to healthcare professionals. The communication plan will include publication on the DHPCs page and in national registers across EU Member States.

A version of this article appeared on Medscape.com.

Has COVID replaced syphilis as the great imitator? At the turn of the 20th century, Sir William Osler was quoted as saying, “He who knows syphilis knows medicine.”

If you have any doubts about the “imitator” analogy, simply use any broad search engine or AI portal and enter “what is the differential diagnosis of primary syphilis, or secondary syphilis, or tertiary syphilis?” A plethora of diseases across many body systems appears.
 

Another Great Pretender?

Did you or do you now have long COVID? How do you know? Do you even know what long COVID is? How would you diagnosis it?

When asked about long COVID, this is what large language model source bard.google.com had to say:

Long COVID, also known as post-COVID conditions or PASC, is a complex condition that can occur in people who have had COVID-19, even if their initial illness was mild or even asymptomatic. It’s characterized by a wide range of symptoms that can last for weeks, months, or even years after the initial infection.

Symptoms of long COVID can include: fatigue, shortness of breath, brain fog (trouble thinking or concentrating), loss of smell or taste, sleep problems, muscle pain, joint pain, headache, dizziness, depression or anxiety, heart palpitations, gastrointestinal problems.

Duh!!! It reads much like a continuation of the symptoms of acute COVID. Bard continued:

The exact cause of long COVID is still unknown, but there are several theories. One possibility is that the virus itself can damage organs and tissues, leading to ongoing symptoms. Another possibility is that the immune system’s response to the virus can continue to cause inflammation even after the virus is gone.

Human intelligence source Wikipedia says this:

Long COVID or long-haul COVID is a group of health problems persisting or developing after an initial COVID-19 infection. Symptoms can last weeks, months or years and are often debilitating. The World Health Organization defines long COVID as starting three months after infection, but other definitions put the start of long COVID at four weeks.

Highly varied, including post-exertional malaise (symptoms made worse with effort), fatigue, muscle pain, shortness of breath, chest pain, and cognitive dysfunction (brain fog).
 

Acute COVID to Long COVID

The World Health Organization estimates that 36 million people in the European region have developed long COVID in the first 3 years of the pandemic. That›s a lot.

We all know that the common signs and symptoms of acute COVID-19 include fever or chills, a dry cough and shortness of breath, feeling very tired, muscle or body aches, headache, loss of taste or smell, sore throat, congestion, runny nose, nausea, vomiting, and diarrhea. Except for the taste and smell findings, every one of these symptoms or signs could indicate a different virus infection or even some type of allergy. My point is the nonspecificity in this list.

Uncommon signs and symptoms of acute COVID include a flat skin rash covered with small bumps, discolored swollen areas on the fingers and toes (COVID toes), and hives. The skin of hands, wrists, or ankles also can be affected. Blisters, itchiness, rough skin, or pus can be seen.

Severe confusion (delirium) might be the main or only symptom of COVID-19 in older people. This COVID-19 symptom is linked with a high risk for poor outcomes, including death. Pink eye (conjunctivitis) can be a COVID-19 symptom. Other eye problems linked to COVID-19 are light sensitivity, sore eyes, and itchy eyes. Acute myocarditis, tinnitus, vertigo, and hearing loss have been reported. And 1-4 weeks after the onset of COVID-19 infection, a patient may experience de novo reactive synovitis and arthritis of any joints.

So, take your pick. Myriad symptoms, signs, diseases, diagnoses, and organ systems — still present, recurring, just appearing, apparently de novo, or after asymptomatic infection. We have so much still to learn.

What big-time symptoms, signs, and major diseases are not on any of these lists? Obviously, cancer, atherosclerotic cardiovascular diseases, obesity, bone diseases, and competitive infections. But be patient; the lingering effects of direct tissue invasion by the virus as well as a wide range of immunologic reactions may just be getting started. Mitochondrial damage, especially in muscles, is increasingly a pathophysiologic suspect.

Human diseases can be physical or mental; and in COVID, that twain not only meet but mix and mingle freely, and may even merge into psychosoma. Don’t ever forget that. Consider “fatigue.” Who among us, COVID or NOVID, does not experience that from time to time?

Or consider brain fog as a common reported symptom of COVID. What on earth is that actually? How can a person know they have brain fog, or whether they had it and are over it?

We need one or more lab or other diagnostic tests that can objectively confirm the diagnosis of long COVID.
 

Useful Progress?

A recent research paper in Science reported intriguing chemical findings that seemed to point a finger at some form of complement dysregulation as a potential disease marker for long COVID. Unfortunately, some critics have pointed out that this entire study may be invalid or irrelevant because the New York cohort was recruited in 2020, before vaccines were available. The Zurich cohort was recruited up until April 2021, so some may have been vaccinated.

Then this news organization came along in early January 2024 with an article about COVID causing not only more than a million American deaths but also more than 5000 deaths from long COVID. We physicians don’t really know what long COVID even is, but we have to sign death certificates blaming thousands of deaths on it anyway? And rolling back the clock to 2020: Are patients dying from COVID or with COVID, according to death certificates?Now, armed with the knowledge that “documented serious post–COVID-19 conditions include cardiovascular, pulmonary, neurological, renal, endocrine, hematological, and gastrointestinal complications, as well as death,” CDC has published clear and fairly concise instructions on how to address post-acute COVID sequelae on death certificates.

In late January, this news organization painted a hopeful picture by naming four phenotypes of long COVID, suggesting that such divisions might further our understanding, including prognosis, and even therapy for this condition. Among the clinical phenotypes of (1) chronic fatigue–like syndrome, headache, and memory loss; (2) respiratory syndrome (which includes cough and difficulty breathing); (3) chronic pain; and (4) neurosensorial syndrome (which causes an altered sense of taste and smell), overlap is clearly possible but isn›t addressed.

I see these recent developments as needed and useful progress, but we are still left with…not much. So, when you tell me that you do or do not have long COVID, I will say to you, “How do you know?”

I also say: She/he/they who know COVID know medicine.

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

Has COVID replaced syphilis as the great imitator? At the turn of the 20th century, Sir William Osler was quoted as saying, “He who knows syphilis knows medicine.”

If you have any doubts about the “imitator” analogy, simply use any broad search engine or AI portal and enter “what is the differential diagnosis of primary syphilis, or secondary syphilis, or tertiary syphilis?” A plethora of diseases across many body systems appears.
 

Another Great Pretender?

Did you or do you now have long COVID? How do you know? Do you even know what long COVID is? How would you diagnosis it?

When asked about long COVID, this is what large language model source bard.google.com had to say:

Long COVID, also known as post-COVID conditions or PASC, is a complex condition that can occur in people who have had COVID-19, even if their initial illness was mild or even asymptomatic. It’s characterized by a wide range of symptoms that can last for weeks, months, or even years after the initial infection.

Symptoms of long COVID can include: fatigue, shortness of breath, brain fog (trouble thinking or concentrating), loss of smell or taste, sleep problems, muscle pain, joint pain, headache, dizziness, depression or anxiety, heart palpitations, gastrointestinal problems.

Duh!!! It reads much like a continuation of the symptoms of acute COVID. Bard continued:

The exact cause of long COVID is still unknown, but there are several theories. One possibility is that the virus itself can damage organs and tissues, leading to ongoing symptoms. Another possibility is that the immune system’s response to the virus can continue to cause inflammation even after the virus is gone.

Human intelligence source Wikipedia says this:

Long COVID or long-haul COVID is a group of health problems persisting or developing after an initial COVID-19 infection. Symptoms can last weeks, months or years and are often debilitating. The World Health Organization defines long COVID as starting three months after infection, but other definitions put the start of long COVID at four weeks.

Highly varied, including post-exertional malaise (symptoms made worse with effort), fatigue, muscle pain, shortness of breath, chest pain, and cognitive dysfunction (brain fog).
 

Acute COVID to Long COVID

The World Health Organization estimates that 36 million people in the European region have developed long COVID in the first 3 years of the pandemic. That›s a lot.

We all know that the common signs and symptoms of acute COVID-19 include fever or chills, a dry cough and shortness of breath, feeling very tired, muscle or body aches, headache, loss of taste or smell, sore throat, congestion, runny nose, nausea, vomiting, and diarrhea. Except for the taste and smell findings, every one of these symptoms or signs could indicate a different virus infection or even some type of allergy. My point is the nonspecificity in this list.

Uncommon signs and symptoms of acute COVID include a flat skin rash covered with small bumps, discolored swollen areas on the fingers and toes (COVID toes), and hives. The skin of hands, wrists, or ankles also can be affected. Blisters, itchiness, rough skin, or pus can be seen.

Severe confusion (delirium) might be the main or only symptom of COVID-19 in older people. This COVID-19 symptom is linked with a high risk for poor outcomes, including death. Pink eye (conjunctivitis) can be a COVID-19 symptom. Other eye problems linked to COVID-19 are light sensitivity, sore eyes, and itchy eyes. Acute myocarditis, tinnitus, vertigo, and hearing loss have been reported. And 1-4 weeks after the onset of COVID-19 infection, a patient may experience de novo reactive synovitis and arthritis of any joints.

So, take your pick. Myriad symptoms, signs, diseases, diagnoses, and organ systems — still present, recurring, just appearing, apparently de novo, or after asymptomatic infection. We have so much still to learn.

What big-time symptoms, signs, and major diseases are not on any of these lists? Obviously, cancer, atherosclerotic cardiovascular diseases, obesity, bone diseases, and competitive infections. But be patient; the lingering effects of direct tissue invasion by the virus as well as a wide range of immunologic reactions may just be getting started. Mitochondrial damage, especially in muscles, is increasingly a pathophysiologic suspect.

Human diseases can be physical or mental; and in COVID, that twain not only meet but mix and mingle freely, and may even merge into psychosoma. Don’t ever forget that. Consider “fatigue.” Who among us, COVID or NOVID, does not experience that from time to time?

Or consider brain fog as a common reported symptom of COVID. What on earth is that actually? How can a person know they have brain fog, or whether they had it and are over it?

We need one or more lab or other diagnostic tests that can objectively confirm the diagnosis of long COVID.
 

Useful Progress?

A recent research paper in Science reported intriguing chemical findings that seemed to point a finger at some form of complement dysregulation as a potential disease marker for long COVID. Unfortunately, some critics have pointed out that this entire study may be invalid or irrelevant because the New York cohort was recruited in 2020, before vaccines were available. The Zurich cohort was recruited up until April 2021, so some may have been vaccinated.

Then this news organization came along in early January 2024 with an article about COVID causing not only more than a million American deaths but also more than 5000 deaths from long COVID. We physicians don’t really know what long COVID even is, but we have to sign death certificates blaming thousands of deaths on it anyway? And rolling back the clock to 2020: Are patients dying from COVID or with COVID, according to death certificates?Now, armed with the knowledge that “documented serious post–COVID-19 conditions include cardiovascular, pulmonary, neurological, renal, endocrine, hematological, and gastrointestinal complications, as well as death,” CDC has published clear and fairly concise instructions on how to address post-acute COVID sequelae on death certificates.

In late January, this news organization painted a hopeful picture by naming four phenotypes of long COVID, suggesting that such divisions might further our understanding, including prognosis, and even therapy for this condition. Among the clinical phenotypes of (1) chronic fatigue–like syndrome, headache, and memory loss; (2) respiratory syndrome (which includes cough and difficulty breathing); (3) chronic pain; and (4) neurosensorial syndrome (which causes an altered sense of taste and smell), overlap is clearly possible but isn›t addressed.

I see these recent developments as needed and useful progress, but we are still left with…not much. So, when you tell me that you do or do not have long COVID, I will say to you, “How do you know?”

I also say: She/he/they who know COVID know medicine.

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

Has COVID replaced syphilis as the great imitator? At the turn of the 20th century, Sir William Osler was quoted as saying, “He who knows syphilis knows medicine.”

If you have any doubts about the “imitator” analogy, simply use any broad search engine or AI portal and enter “what is the differential diagnosis of primary syphilis, or secondary syphilis, or tertiary syphilis?” A plethora of diseases across many body systems appears.
 

Another Great Pretender?

Did you or do you now have long COVID? How do you know? Do you even know what long COVID is? How would you diagnosis it?

When asked about long COVID, this is what large language model source bard.google.com had to say:

Long COVID, also known as post-COVID conditions or PASC, is a complex condition that can occur in people who have had COVID-19, even if their initial illness was mild or even asymptomatic. It’s characterized by a wide range of symptoms that can last for weeks, months, or even years after the initial infection.

Symptoms of long COVID can include: fatigue, shortness of breath, brain fog (trouble thinking or concentrating), loss of smell or taste, sleep problems, muscle pain, joint pain, headache, dizziness, depression or anxiety, heart palpitations, gastrointestinal problems.

Duh!!! It reads much like a continuation of the symptoms of acute COVID. Bard continued:

The exact cause of long COVID is still unknown, but there are several theories. One possibility is that the virus itself can damage organs and tissues, leading to ongoing symptoms. Another possibility is that the immune system’s response to the virus can continue to cause inflammation even after the virus is gone.

Human intelligence source Wikipedia says this:

Long COVID or long-haul COVID is a group of health problems persisting or developing after an initial COVID-19 infection. Symptoms can last weeks, months or years and are often debilitating. The World Health Organization defines long COVID as starting three months after infection, but other definitions put the start of long COVID at four weeks.

Highly varied, including post-exertional malaise (symptoms made worse with effort), fatigue, muscle pain, shortness of breath, chest pain, and cognitive dysfunction (brain fog).
 

Acute COVID to Long COVID

The World Health Organization estimates that 36 million people in the European region have developed long COVID in the first 3 years of the pandemic. That›s a lot.

We all know that the common signs and symptoms of acute COVID-19 include fever or chills, a dry cough and shortness of breath, feeling very tired, muscle or body aches, headache, loss of taste or smell, sore throat, congestion, runny nose, nausea, vomiting, and diarrhea. Except for the taste and smell findings, every one of these symptoms or signs could indicate a different virus infection or even some type of allergy. My point is the nonspecificity in this list.

Uncommon signs and symptoms of acute COVID include a flat skin rash covered with small bumps, discolored swollen areas on the fingers and toes (COVID toes), and hives. The skin of hands, wrists, or ankles also can be affected. Blisters, itchiness, rough skin, or pus can be seen.

Severe confusion (delirium) might be the main or only symptom of COVID-19 in older people. This COVID-19 symptom is linked with a high risk for poor outcomes, including death. Pink eye (conjunctivitis) can be a COVID-19 symptom. Other eye problems linked to COVID-19 are light sensitivity, sore eyes, and itchy eyes. Acute myocarditis, tinnitus, vertigo, and hearing loss have been reported. And 1-4 weeks after the onset of COVID-19 infection, a patient may experience de novo reactive synovitis and arthritis of any joints.

So, take your pick. Myriad symptoms, signs, diseases, diagnoses, and organ systems — still present, recurring, just appearing, apparently de novo, or after asymptomatic infection. We have so much still to learn.

What big-time symptoms, signs, and major diseases are not on any of these lists? Obviously, cancer, atherosclerotic cardiovascular diseases, obesity, bone diseases, and competitive infections. But be patient; the lingering effects of direct tissue invasion by the virus as well as a wide range of immunologic reactions may just be getting started. Mitochondrial damage, especially in muscles, is increasingly a pathophysiologic suspect.

Human diseases can be physical or mental; and in COVID, that twain not only meet but mix and mingle freely, and may even merge into psychosoma. Don’t ever forget that. Consider “fatigue.” Who among us, COVID or NOVID, does not experience that from time to time?

Or consider brain fog as a common reported symptom of COVID. What on earth is that actually? How can a person know they have brain fog, or whether they had it and are over it?

We need one or more lab or other diagnostic tests that can objectively confirm the diagnosis of long COVID.
 

Useful Progress?

A recent research paper in Science reported intriguing chemical findings that seemed to point a finger at some form of complement dysregulation as a potential disease marker for long COVID. Unfortunately, some critics have pointed out that this entire study may be invalid or irrelevant because the New York cohort was recruited in 2020, before vaccines were available. The Zurich cohort was recruited up until April 2021, so some may have been vaccinated.

Then this news organization came along in early January 2024 with an article about COVID causing not only more than a million American deaths but also more than 5000 deaths from long COVID. We physicians don’t really know what long COVID even is, but we have to sign death certificates blaming thousands of deaths on it anyway? And rolling back the clock to 2020: Are patients dying from COVID or with COVID, according to death certificates?Now, armed with the knowledge that “documented serious post–COVID-19 conditions include cardiovascular, pulmonary, neurological, renal, endocrine, hematological, and gastrointestinal complications, as well as death,” CDC has published clear and fairly concise instructions on how to address post-acute COVID sequelae on death certificates.

In late January, this news organization painted a hopeful picture by naming four phenotypes of long COVID, suggesting that such divisions might further our understanding, including prognosis, and even therapy for this condition. Among the clinical phenotypes of (1) chronic fatigue–like syndrome, headache, and memory loss; (2) respiratory syndrome (which includes cough and difficulty breathing); (3) chronic pain; and (4) neurosensorial syndrome (which causes an altered sense of taste and smell), overlap is clearly possible but isn›t addressed.

I see these recent developments as needed and useful progress, but we are still left with…not much. So, when you tell me that you do or do not have long COVID, I will say to you, “How do you know?”

I also say: She/he/they who know COVID know medicine.

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

Brain fog is one of the most common, persistent complaints in patients with long COVID. It affects as many as 46% of patients who also deal with other cognitive concerns like memory loss and difficulty concentrating. 

Now, researchers believe they know why. A new study has found that these symptoms may be the result of a viral-borne brain injury that may cause cognitive and mental health issues that persist for years.

Researchers found that 351 patients hospitalized with severe COVID-19 had evidence of a long-term brain injury a year after contracting the SARS-CoV-2 virus. The findings were based on a series of cognitive tests, self-reported symptoms, brain scans, and biomarkers.
 

Brain Deficits Equal to 20 Years of Brain Aging

As part of the preprint study, participants took a cognition test with their scores age-matched to those who had not suffered a serious bout of COVID-19. Then a blood sample was taken to look for specific biomarkers, showing that elevated levels of certain biomarkers were consistent with a brain injury. Using brain scans, researchers also found that certain regions of the brain associated with attention were reduced in volume.

Patients who participated in the study were “less accurate and slower” in their cognition, and suffered from at least one mental health condition, such as depression, anxiety, or posttraumatic stress disorder, according to researchers.

The brain deficits found in COVID-19 patients were equivalent to 20 years of brain aging and provided proof of what doctors have feared: that this virus can damage the brain and result in ongoing mental health issues.

“We found global deficits across cognition,” said lead study author Benedict Michael, PhD, director of the Infection Neuroscience Lab at the University of Liverpool in Liverpool, England. “The cognitive and memory problems that patients complained of were associated with neuroanatomical changes to the brain.”
 

Proof That Symptoms Aren’t ‘Figment’ of Patients’ Imaginations

Cognitive deficits were common among all patients, but the researchers said they don’t yet know whether the brain damage causes permanent cognitive decline. But the research provides patients who have been overlooked by some clinicians with proof that their conditions aren’t a figment of their imaginations, said Karla L. Thompson, PhD, lead neuropsychologist at the University of North Carolina School of Medicine’s COVID Recovery Clinic. 

“Even though we’re several years into this pandemic, there are still a lot of providers who don’t believe that their patients are experiencing these residual symptoms,” said Dr. Thompson, “That’s why the use of biomarkers is important, because it provides an objective indication that the brain has been compromised in some way.”

Some patients with long COVID have said that getting their doctors to believe they have a physical ailment has been a persistent problem throughout the pandemic and especially as it relates to the sometimes-vague collection of symptoms associated with brain fog. One study found that as many as 79% of study respondents reported negative interactions with their healthcare providers when they sought treatment for their long-COVID symptoms.
 

How Do COVID-Related Brain Injuries Happen?

Researchers are unsure what’s causing these brain injuries, though they have identified some clues. Previous research has suggested that such injuries might be the result of a lack of oxygen to the brain, especially in patients who were hospitalized, like those in this study, and were put on ventilators.

Brain scans have previously shown atrophy to the brain›s gray matter in COVID-19 patients, likely caused by inflammation from a heightened immune response rather than the virus itself. This inflammatory response seems to affect the central nervous system. As part of the new study, researchers found some neuroprotective effects of using steroids during hospitalization to reduce brain inflammation.

The results suggest that clinicians should overcome their skepticism and consider the possibility that their patients have suffered a brain injury and should be treated appropriately, said James C. Jackson, PsyD, a neuropsychiatrist at Vanderbilt University School of Medicine. “The old saying is that if it walks like a duck and talks like a duck, it’s a duck,” said Dr. Jackson. 

He contends that treatments used for patients who have brain injuries have also been shown to be effective in treating long COVID–related brain fog symptoms. These may include speech, cognitive, and occupational therapy as well as meeting with a neuropsychiatrist for the treatment of related mental health concerns.
 

A New Path Forward

Treating long-COVID brain fog like a brain injury can help patients get back to some semblance of normalcy, researchers said. “What we’re seeing in terms of brain injury biomarkers and differences in brain scans correlates to real-life problems that these patients are dealing with on a daily basis,” said Dr. Jackson. These include problems at work and in life with multitasking, remembering details, meeting deadlines, synthesizing large amounts of information, and maintaining focus on the task at hand, he said.

There’s also a fear that even with treatment, the aging of the brain caused by the virus might have long-term repercussions and that this enduring injury may cause the early onset of dementia and Alzheimer’s disease in those who were already vulnerable to it. One study, from the National Institute of Neurological Disorders and Stroke (NINDS), found that in those infected with COVID-19 who already had dementia, the virus “rapidly accelerated structural and functional brain deterioration.” 

“We already know the role that neuroinflammation plays in the brains of patients with Alzheimer’s disease,” said Dr. Thompson. “If long COVID is involved in prolonged inflammation of the brain, it goes a long way in explaining the mechanism underlying [the study’s reported] brain aging.”
 

Still More to Learn

In some ways, this study raises nearly as many questions as it does answers. While it provides concrete evidence around the damage the virus is doing to the brains of patients who contracted severe COVID-19, researchers don’t know about the impact on those who had less serious cases of the virus. 

For Ziyad Al-Aly, MD, chief of research and development at the Veterans Affairs St. Louis Health Care System, the concern is that some long-COVID patients may be suffering from cognitive deficits that are more subtle but still impacting their daily lives, and that they’re not getting the help they need. 

What’s more, said Dr. Al-Aly, it’s unclear whether the impacts of the brain damage are permanent or how to stop them from worsening. Researchers and clinicians need a better understanding of the mechanism that allows this virus to enter the brain and do structural damage. If it’s inflammation, will anti-inflammatory or antiviral medications work at preventing it? Will steroids help to offset the damage? “It’s critical we find some answers,” he said.

“SARS-CoV-2 isn’t going anywhere. It will continue to infect the population, so if this is indeed a virus that damages the brain in the long term or permanently, we need to figure out what can be done to stop it,” said Dr. Al-Aly.

A version of this article appeared on Medscape.com.

Brain fog is one of the most common, persistent complaints in patients with long COVID. It affects as many as 46% of patients who also deal with other cognitive concerns like memory loss and difficulty concentrating. 

Now, researchers believe they know why. A new study has found that these symptoms may be the result of a viral-borne brain injury that may cause cognitive and mental health issues that persist for years.

Researchers found that 351 patients hospitalized with severe COVID-19 had evidence of a long-term brain injury a year after contracting the SARS-CoV-2 virus. The findings were based on a series of cognitive tests, self-reported symptoms, brain scans, and biomarkers.
 

Brain Deficits Equal to 20 Years of Brain Aging

As part of the preprint study, participants took a cognition test with their scores age-matched to those who had not suffered a serious bout of COVID-19. Then a blood sample was taken to look for specific biomarkers, showing that elevated levels of certain biomarkers were consistent with a brain injury. Using brain scans, researchers also found that certain regions of the brain associated with attention were reduced in volume.

Patients who participated in the study were “less accurate and slower” in their cognition, and suffered from at least one mental health condition, such as depression, anxiety, or posttraumatic stress disorder, according to researchers.

The brain deficits found in COVID-19 patients were equivalent to 20 years of brain aging and provided proof of what doctors have feared: that this virus can damage the brain and result in ongoing mental health issues.

“We found global deficits across cognition,” said lead study author Benedict Michael, PhD, director of the Infection Neuroscience Lab at the University of Liverpool in Liverpool, England. “The cognitive and memory problems that patients complained of were associated with neuroanatomical changes to the brain.”
 

Proof That Symptoms Aren’t ‘Figment’ of Patients’ Imaginations

Cognitive deficits were common among all patients, but the researchers said they don’t yet know whether the brain damage causes permanent cognitive decline. But the research provides patients who have been overlooked by some clinicians with proof that their conditions aren’t a figment of their imaginations, said Karla L. Thompson, PhD, lead neuropsychologist at the University of North Carolina School of Medicine’s COVID Recovery Clinic. 

“Even though we’re several years into this pandemic, there are still a lot of providers who don’t believe that their patients are experiencing these residual symptoms,” said Dr. Thompson, “That’s why the use of biomarkers is important, because it provides an objective indication that the brain has been compromised in some way.”

Some patients with long COVID have said that getting their doctors to believe they have a physical ailment has been a persistent problem throughout the pandemic and especially as it relates to the sometimes-vague collection of symptoms associated with brain fog. One study found that as many as 79% of study respondents reported negative interactions with their healthcare providers when they sought treatment for their long-COVID symptoms.
 

How Do COVID-Related Brain Injuries Happen?

Researchers are unsure what’s causing these brain injuries, though they have identified some clues. Previous research has suggested that such injuries might be the result of a lack of oxygen to the brain, especially in patients who were hospitalized, like those in this study, and were put on ventilators.

Brain scans have previously shown atrophy to the brain›s gray matter in COVID-19 patients, likely caused by inflammation from a heightened immune response rather than the virus itself. This inflammatory response seems to affect the central nervous system. As part of the new study, researchers found some neuroprotective effects of using steroids during hospitalization to reduce brain inflammation.

The results suggest that clinicians should overcome their skepticism and consider the possibility that their patients have suffered a brain injury and should be treated appropriately, said James C. Jackson, PsyD, a neuropsychiatrist at Vanderbilt University School of Medicine. “The old saying is that if it walks like a duck and talks like a duck, it’s a duck,” said Dr. Jackson. 

He contends that treatments used for patients who have brain injuries have also been shown to be effective in treating long COVID–related brain fog symptoms. These may include speech, cognitive, and occupational therapy as well as meeting with a neuropsychiatrist for the treatment of related mental health concerns.
 

A New Path Forward

Treating long-COVID brain fog like a brain injury can help patients get back to some semblance of normalcy, researchers said. “What we’re seeing in terms of brain injury biomarkers and differences in brain scans correlates to real-life problems that these patients are dealing with on a daily basis,” said Dr. Jackson. These include problems at work and in life with multitasking, remembering details, meeting deadlines, synthesizing large amounts of information, and maintaining focus on the task at hand, he said.

There’s also a fear that even with treatment, the aging of the brain caused by the virus might have long-term repercussions and that this enduring injury may cause the early onset of dementia and Alzheimer’s disease in those who were already vulnerable to it. One study, from the National Institute of Neurological Disorders and Stroke (NINDS), found that in those infected with COVID-19 who already had dementia, the virus “rapidly accelerated structural and functional brain deterioration.” 

“We already know the role that neuroinflammation plays in the brains of patients with Alzheimer’s disease,” said Dr. Thompson. “If long COVID is involved in prolonged inflammation of the brain, it goes a long way in explaining the mechanism underlying [the study’s reported] brain aging.”
 

Still More to Learn

In some ways, this study raises nearly as many questions as it does answers. While it provides concrete evidence around the damage the virus is doing to the brains of patients who contracted severe COVID-19, researchers don’t know about the impact on those who had less serious cases of the virus. 

For Ziyad Al-Aly, MD, chief of research and development at the Veterans Affairs St. Louis Health Care System, the concern is that some long-COVID patients may be suffering from cognitive deficits that are more subtle but still impacting their daily lives, and that they’re not getting the help they need. 

What’s more, said Dr. Al-Aly, it’s unclear whether the impacts of the brain damage are permanent or how to stop them from worsening. Researchers and clinicians need a better understanding of the mechanism that allows this virus to enter the brain and do structural damage. If it’s inflammation, will anti-inflammatory or antiviral medications work at preventing it? Will steroids help to offset the damage? “It’s critical we find some answers,” he said.

“SARS-CoV-2 isn’t going anywhere. It will continue to infect the population, so if this is indeed a virus that damages the brain in the long term or permanently, we need to figure out what can be done to stop it,” said Dr. Al-Aly.

A version of this article appeared on Medscape.com.

Brain fog is one of the most common, persistent complaints in patients with long COVID. It affects as many as 46% of patients who also deal with other cognitive concerns like memory loss and difficulty concentrating. 

Now, researchers believe they know why. A new study has found that these symptoms may be the result of a viral-borne brain injury that may cause cognitive and mental health issues that persist for years.

Researchers found that 351 patients hospitalized with severe COVID-19 had evidence of a long-term brain injury a year after contracting the SARS-CoV-2 virus. The findings were based on a series of cognitive tests, self-reported symptoms, brain scans, and biomarkers.
 

Brain Deficits Equal to 20 Years of Brain Aging

As part of the preprint study, participants took a cognition test with their scores age-matched to those who had not suffered a serious bout of COVID-19. Then a blood sample was taken to look for specific biomarkers, showing that elevated levels of certain biomarkers were consistent with a brain injury. Using brain scans, researchers also found that certain regions of the brain associated with attention were reduced in volume.

Patients who participated in the study were “less accurate and slower” in their cognition, and suffered from at least one mental health condition, such as depression, anxiety, or posttraumatic stress disorder, according to researchers.

The brain deficits found in COVID-19 patients were equivalent to 20 years of brain aging and provided proof of what doctors have feared: that this virus can damage the brain and result in ongoing mental health issues.

“We found global deficits across cognition,” said lead study author Benedict Michael, PhD, director of the Infection Neuroscience Lab at the University of Liverpool in Liverpool, England. “The cognitive and memory problems that patients complained of were associated with neuroanatomical changes to the brain.”
 

Proof That Symptoms Aren’t ‘Figment’ of Patients’ Imaginations

Cognitive deficits were common among all patients, but the researchers said they don’t yet know whether the brain damage causes permanent cognitive decline. But the research provides patients who have been overlooked by some clinicians with proof that their conditions aren’t a figment of their imaginations, said Karla L. Thompson, PhD, lead neuropsychologist at the University of North Carolina School of Medicine’s COVID Recovery Clinic. 

“Even though we’re several years into this pandemic, there are still a lot of providers who don’t believe that their patients are experiencing these residual symptoms,” said Dr. Thompson, “That’s why the use of biomarkers is important, because it provides an objective indication that the brain has been compromised in some way.”

Some patients with long COVID have said that getting their doctors to believe they have a physical ailment has been a persistent problem throughout the pandemic and especially as it relates to the sometimes-vague collection of symptoms associated with brain fog. One study found that as many as 79% of study respondents reported negative interactions with their healthcare providers when they sought treatment for their long-COVID symptoms.
 

How Do COVID-Related Brain Injuries Happen?

Researchers are unsure what’s causing these brain injuries, though they have identified some clues. Previous research has suggested that such injuries might be the result of a lack of oxygen to the brain, especially in patients who were hospitalized, like those in this study, and were put on ventilators.

Brain scans have previously shown atrophy to the brain›s gray matter in COVID-19 patients, likely caused by inflammation from a heightened immune response rather than the virus itself. This inflammatory response seems to affect the central nervous system. As part of the new study, researchers found some neuroprotective effects of using steroids during hospitalization to reduce brain inflammation.

The results suggest that clinicians should overcome their skepticism and consider the possibility that their patients have suffered a brain injury and should be treated appropriately, said James C. Jackson, PsyD, a neuropsychiatrist at Vanderbilt University School of Medicine. “The old saying is that if it walks like a duck and talks like a duck, it’s a duck,” said Dr. Jackson. 

He contends that treatments used for patients who have brain injuries have also been shown to be effective in treating long COVID–related brain fog symptoms. These may include speech, cognitive, and occupational therapy as well as meeting with a neuropsychiatrist for the treatment of related mental health concerns.
 

A New Path Forward

Treating long-COVID brain fog like a brain injury can help patients get back to some semblance of normalcy, researchers said. “What we’re seeing in terms of brain injury biomarkers and differences in brain scans correlates to real-life problems that these patients are dealing with on a daily basis,” said Dr. Jackson. These include problems at work and in life with multitasking, remembering details, meeting deadlines, synthesizing large amounts of information, and maintaining focus on the task at hand, he said.

There’s also a fear that even with treatment, the aging of the brain caused by the virus might have long-term repercussions and that this enduring injury may cause the early onset of dementia and Alzheimer’s disease in those who were already vulnerable to it. One study, from the National Institute of Neurological Disorders and Stroke (NINDS), found that in those infected with COVID-19 who already had dementia, the virus “rapidly accelerated structural and functional brain deterioration.” 

“We already know the role that neuroinflammation plays in the brains of patients with Alzheimer’s disease,” said Dr. Thompson. “If long COVID is involved in prolonged inflammation of the brain, it goes a long way in explaining the mechanism underlying [the study’s reported] brain aging.”
 

Still More to Learn

In some ways, this study raises nearly as many questions as it does answers. While it provides concrete evidence around the damage the virus is doing to the brains of patients who contracted severe COVID-19, researchers don’t know about the impact on those who had less serious cases of the virus. 

For Ziyad Al-Aly, MD, chief of research and development at the Veterans Affairs St. Louis Health Care System, the concern is that some long-COVID patients may be suffering from cognitive deficits that are more subtle but still impacting their daily lives, and that they’re not getting the help they need. 

What’s more, said Dr. Al-Aly, it’s unclear whether the impacts of the brain damage are permanent or how to stop them from worsening. Researchers and clinicians need a better understanding of the mechanism that allows this virus to enter the brain and do structural damage. If it’s inflammation, will anti-inflammatory or antiviral medications work at preventing it? Will steroids help to offset the damage? “It’s critical we find some answers,” he said.

“SARS-CoV-2 isn’t going anywhere. It will continue to infect the population, so if this is indeed a virus that damages the brain in the long term or permanently, we need to figure out what can be done to stop it,” said Dr. Al-Aly.

A version of this article appeared on Medscape.com.

Cases of menstrual disorders, particularly unusually heavy menstrual bleeding, have been reported following RNA vaccination against COVID-19.

In France, this safety signal has been confirmed and added to the product characteristics summaries and vaccine leaflets for mRNA vaccines in October 2022. However, few studies have accurately measured this risk to date.

To address this gap in research, the French scientific interest group in the epidemiology of health products, ANSM-Cnam EPI-PHARE, conducted a study to assess the risk for heavy menstrual bleeding requiring hospitalization after COVID-19 vaccination in France.

“This study provides new evidence supporting the existence of an increased risk for heavy menstrual bleeding following COVID-19 vaccination with mRNA vaccines,” wrote the authors.
 

Study Details

The study included all women aged 15-50 years who were diagnosed with heavy menstrual bleeding in the hospital between May 12, 2021, and August 31, 2022. Participants were identified in the National Health Data System, and the study population totaled 4610 women.

Each participant was randomly matched with as many as 30 women who had not been hospitalized for abnormal genital bleeding and had similar characteristics in terms of age, department of residence, social deprivation index of the commune of residence, and contraceptive method.

Women who had a recent pregnancy, hysterectomy, or coagulation disorder within the specified time frames were excluded.

At the time of the study, 71% of cases and 70% of controls had received at least one dose of the COVID-19 vaccine. Among vaccinated participants, 68% and 66%, respectively, received a vaccination dose (first or second dose). An mRNA vaccine (Comirnaty or Spikevax) was the last vaccine for 99.8% of the population.
 

Increased Risk 

Compared with control women, those hospitalized for heavy menstrual bleeding were more likely to have received their last dose of mRNA vaccine (Comirnaty or Spikevax) in the previous 1-3 months. This association was observed for vaccination doses (odds ratio [OR], 1.20), indicating a 20% increased risk, but it was not found for booster doses (OR, 1.07).

This association was particularly notable for women residing in socially disadvantaged communities (OR, 1.28) and women not using hormonal contraception (OR, 1.28).

The risk did not appear to be increased beyond 3 months after vaccination. Researchers noted that the increased risk may have occurred earlier, considering the likely interval between initial symptoms and hospitalization.

Assuming a causal relationship, the estimated number of cases attributable to vaccination was 8 cases per million vaccinated women, totaling 103 cases among all women aged 15-50 years who were vaccinated in France between May 12, 2021, and August 31, 2022.

As of the study date and in the 3 years before the study, none of the authors had any conflicts of interest with pharmaceutical companies. 
 

This article was translated from the Medscape French edition. A version of this article appeared on Medscape.com.

Cases of menstrual disorders, particularly unusually heavy menstrual bleeding, have been reported following RNA vaccination against COVID-19.

In France, this safety signal has been confirmed and added to the product characteristics summaries and vaccine leaflets for mRNA vaccines in October 2022. However, few studies have accurately measured this risk to date.

To address this gap in research, the French scientific interest group in the epidemiology of health products, ANSM-Cnam EPI-PHARE, conducted a study to assess the risk for heavy menstrual bleeding requiring hospitalization after COVID-19 vaccination in France.

“This study provides new evidence supporting the existence of an increased risk for heavy menstrual bleeding following COVID-19 vaccination with mRNA vaccines,” wrote the authors.
 

Study Details

The study included all women aged 15-50 years who were diagnosed with heavy menstrual bleeding in the hospital between May 12, 2021, and August 31, 2022. Participants were identified in the National Health Data System, and the study population totaled 4610 women.

Each participant was randomly matched with as many as 30 women who had not been hospitalized for abnormal genital bleeding and had similar characteristics in terms of age, department of residence, social deprivation index of the commune of residence, and contraceptive method.

Women who had a recent pregnancy, hysterectomy, or coagulation disorder within the specified time frames were excluded.

At the time of the study, 71% of cases and 70% of controls had received at least one dose of the COVID-19 vaccine. Among vaccinated participants, 68% and 66%, respectively, received a vaccination dose (first or second dose). An mRNA vaccine (Comirnaty or Spikevax) was the last vaccine for 99.8% of the population.
 

Increased Risk 

Compared with control women, those hospitalized for heavy menstrual bleeding were more likely to have received their last dose of mRNA vaccine (Comirnaty or Spikevax) in the previous 1-3 months. This association was observed for vaccination doses (odds ratio [OR], 1.20), indicating a 20% increased risk, but it was not found for booster doses (OR, 1.07).

This association was particularly notable for women residing in socially disadvantaged communities (OR, 1.28) and women not using hormonal contraception (OR, 1.28).

The risk did not appear to be increased beyond 3 months after vaccination. Researchers noted that the increased risk may have occurred earlier, considering the likely interval between initial symptoms and hospitalization.

Assuming a causal relationship, the estimated number of cases attributable to vaccination was 8 cases per million vaccinated women, totaling 103 cases among all women aged 15-50 years who were vaccinated in France between May 12, 2021, and August 31, 2022.

As of the study date and in the 3 years before the study, none of the authors had any conflicts of interest with pharmaceutical companies. 
 

This article was translated from the Medscape French edition. A version of this article appeared on Medscape.com.

Cases of menstrual disorders, particularly unusually heavy menstrual bleeding, have been reported following RNA vaccination against COVID-19.

In France, this safety signal has been confirmed and added to the product characteristics summaries and vaccine leaflets for mRNA vaccines in October 2022. However, few studies have accurately measured this risk to date.

To address this gap in research, the French scientific interest group in the epidemiology of health products, ANSM-Cnam EPI-PHARE, conducted a study to assess the risk for heavy menstrual bleeding requiring hospitalization after COVID-19 vaccination in France.

“This study provides new evidence supporting the existence of an increased risk for heavy menstrual bleeding following COVID-19 vaccination with mRNA vaccines,” wrote the authors.
 

Study Details

The study included all women aged 15-50 years who were diagnosed with heavy menstrual bleeding in the hospital between May 12, 2021, and August 31, 2022. Participants were identified in the National Health Data System, and the study population totaled 4610 women.

Each participant was randomly matched with as many as 30 women who had not been hospitalized for abnormal genital bleeding and had similar characteristics in terms of age, department of residence, social deprivation index of the commune of residence, and contraceptive method.

Women who had a recent pregnancy, hysterectomy, or coagulation disorder within the specified time frames were excluded.

At the time of the study, 71% of cases and 70% of controls had received at least one dose of the COVID-19 vaccine. Among vaccinated participants, 68% and 66%, respectively, received a vaccination dose (first or second dose). An mRNA vaccine (Comirnaty or Spikevax) was the last vaccine for 99.8% of the population.
 

Increased Risk 

Compared with control women, those hospitalized for heavy menstrual bleeding were more likely to have received their last dose of mRNA vaccine (Comirnaty or Spikevax) in the previous 1-3 months. This association was observed for vaccination doses (odds ratio [OR], 1.20), indicating a 20% increased risk, but it was not found for booster doses (OR, 1.07).

This association was particularly notable for women residing in socially disadvantaged communities (OR, 1.28) and women not using hormonal contraception (OR, 1.28).

The risk did not appear to be increased beyond 3 months after vaccination. Researchers noted that the increased risk may have occurred earlier, considering the likely interval between initial symptoms and hospitalization.

Assuming a causal relationship, the estimated number of cases attributable to vaccination was 8 cases per million vaccinated women, totaling 103 cases among all women aged 15-50 years who were vaccinated in France between May 12, 2021, and August 31, 2022.

As of the study date and in the 3 years before the study, none of the authors had any conflicts of interest with pharmaceutical companies. 
 

This article was translated from the Medscape French edition. A version of this article appeared on Medscape.com.

Children and adolescents ages 5-17 who received a bivalent COVID-19 mRNA vaccine were less likely to become infected with SARS-CoV-2 compared with those who were unvaccinated or received only the monovalent COVID-19 vaccine, according to new data published February 6 in JAMA.

“All eligible children and adolescents should remain up to date with recommended COVID-19 vaccinations,” wrote the authors, led by Leora R. Feldstein, PhD, with the US Centers for Disease Control and Prevention (CDC) in Atlanta.

By the end of 2023, at least 911 youths ages 5-17 had died from COVID-related causes.

Researchers found that compared with participants who did not receive the COVID-19 vaccine or got monovalent-only doses 180 days or more before, the adjusted vaccine effectiveness of a bivalent COVID-19 vaccine dose against SARS-CoV-2 infection was 51.3% (95% confidence interval [CI], 23.6%-71.9%) 7-60 days after vaccination. Relative effectiveness was 62.4% (95% CI, 38.5%-81.1%) 61-150 days after vaccination. The researchers said the confidence intervals were wide because of the small sample size.

The information can help inform public health strategies, the authors noted, especially as new variants emerge.
 

Bivalent Dose Recommended in Fall of 2022

Bivalent mRNA COVID vaccines were recommended in the United States for children and adolescents ages 12 years or older on Sept. 1, 2022, and for children ages 5-11 on Oct. 12, 2022, when Omicron BA.4/5 types were the predominant circulating variant.

The study included 2,959 participants who completed periodic surveys (answering questions on demographics, household details, chronic medical conditions, and COVID-19 symptoms) and submitted weekly self-collected nasal swabs (whether or not they had symptoms). Those in the study submitted additional nasal swabs if they developed any symptoms.

Median adherence to weekly upper respiratory specimen swabbing was high throughout the study period at 93.8%.

Data from Sept. 4, 2022, to Jan. 31, 2023, were combined from three prospective US cohort studies at six sites. In addition to the surveys, researchers used information from state immunization information systems and electronic medical records.
 

Most of the Infected Were Unvaccinated or Had Monovalent Vax

Of the 426 participants (14.4% of the combined cohorts) infected with SARS-CoV-2, 383 (89.9%) were either unvaccinated or received monovalent vaccine doses only.

Calculations were adjusted for age, sex, race, ethnicity, health conditions, prior SARS-CoV-2 infections, geographic location, proportion of circulating variants by site, and local virus prevalence.

Participants living in Oregon, for example, had the highest uptake of bivalent COVID-19 vaccine (56.2%), whereas those in Texas had the lowest (2.4%). Participants reporting Hispanic ethnicity had lower bivalent uptake (17.1%) compared with non-Hispanic participants of all races (27.1%).

Of the 2,207 participants who did not receive a bivalent dose, 24.2% were unvaccinated and 1,672 (75.8%) received at least 1 monovalent dose.

The researchers said they saw no sign of waning effectiveness 61-150 days (the limit for this analysis) after receipt of the bivalent COVID-19 vaccine.

They wrote that continuation of the cohorts will allow study of waning patterns, which could help inform vaccine recommendations.

Among the limitations of the study are that testing methods and the COVID-19 symptoms surveyed varied among the three cohorts, so there may be some differences in defining infection or symptomatic COVID. In addition, the researchers were not able to account for the social vulnerability index and immunocompromised status, which could have affected vaccine uptake and risk of SARS-CoV-2 infection.

This study was supported by the National Center for Immunization and Respiratory Diseases, US Centers for Disease Control and Prevention, and by the National Institute of Allergy and Infectious Diseases. Coauthor Dr. Caban-Martinez reported grants from the Florida Firefighter Cancer Initiative and the Florida Department of Health. Coauthors Dr. Chu, Dr. Englund, Dr. Martin, and Dr. Monto reported receiving personal fees or grants from multiple pharmaceutical companies. Dr. Hegmann reported being the editor of the American College of Occupational and Environmental Medicine practice guidelines. Coauthor Dr. Gaglani reported serving as cochair of the infectious diseases and immunization committee and the respiratory syncytial virus task force lead for the Texas Pediatric Society and the Texas Chapter of the American Academy of Pediatrics. No other disclosures were reported.

Children and adolescents ages 5-17 who received a bivalent COVID-19 mRNA vaccine were less likely to become infected with SARS-CoV-2 compared with those who were unvaccinated or received only the monovalent COVID-19 vaccine, according to new data published February 6 in JAMA.

“All eligible children and adolescents should remain up to date with recommended COVID-19 vaccinations,” wrote the authors, led by Leora R. Feldstein, PhD, with the US Centers for Disease Control and Prevention (CDC) in Atlanta.

By the end of 2023, at least 911 youths ages 5-17 had died from COVID-related causes.

Researchers found that compared with participants who did not receive the COVID-19 vaccine or got monovalent-only doses 180 days or more before, the adjusted vaccine effectiveness of a bivalent COVID-19 vaccine dose against SARS-CoV-2 infection was 51.3% (95% confidence interval [CI], 23.6%-71.9%) 7-60 days after vaccination. Relative effectiveness was 62.4% (95% CI, 38.5%-81.1%) 61-150 days after vaccination. The researchers said the confidence intervals were wide because of the small sample size.

The information can help inform public health strategies, the authors noted, especially as new variants emerge.
 

Bivalent Dose Recommended in Fall of 2022

Bivalent mRNA COVID vaccines were recommended in the United States for children and adolescents ages 12 years or older on Sept. 1, 2022, and for children ages 5-11 on Oct. 12, 2022, when Omicron BA.4/5 types were the predominant circulating variant.

The study included 2,959 participants who completed periodic surveys (answering questions on demographics, household details, chronic medical conditions, and COVID-19 symptoms) and submitted weekly self-collected nasal swabs (whether or not they had symptoms). Those in the study submitted additional nasal swabs if they developed any symptoms.

Median adherence to weekly upper respiratory specimen swabbing was high throughout the study period at 93.8%.

Data from Sept. 4, 2022, to Jan. 31, 2023, were combined from three prospective US cohort studies at six sites. In addition to the surveys, researchers used information from state immunization information systems and electronic medical records.
 

Most of the Infected Were Unvaccinated or Had Monovalent Vax

Of the 426 participants (14.4% of the combined cohorts) infected with SARS-CoV-2, 383 (89.9%) were either unvaccinated or received monovalent vaccine doses only.

Calculations were adjusted for age, sex, race, ethnicity, health conditions, prior SARS-CoV-2 infections, geographic location, proportion of circulating variants by site, and local virus prevalence.

Participants living in Oregon, for example, had the highest uptake of bivalent COVID-19 vaccine (56.2%), whereas those in Texas had the lowest (2.4%). Participants reporting Hispanic ethnicity had lower bivalent uptake (17.1%) compared with non-Hispanic participants of all races (27.1%).

Of the 2,207 participants who did not receive a bivalent dose, 24.2% were unvaccinated and 1,672 (75.8%) received at least 1 monovalent dose.

The researchers said they saw no sign of waning effectiveness 61-150 days (the limit for this analysis) after receipt of the bivalent COVID-19 vaccine.

They wrote that continuation of the cohorts will allow study of waning patterns, which could help inform vaccine recommendations.

Among the limitations of the study are that testing methods and the COVID-19 symptoms surveyed varied among the three cohorts, so there may be some differences in defining infection or symptomatic COVID. In addition, the researchers were not able to account for the social vulnerability index and immunocompromised status, which could have affected vaccine uptake and risk of SARS-CoV-2 infection.

This study was supported by the National Center for Immunization and Respiratory Diseases, US Centers for Disease Control and Prevention, and by the National Institute of Allergy and Infectious Diseases. Coauthor Dr. Caban-Martinez reported grants from the Florida Firefighter Cancer Initiative and the Florida Department of Health. Coauthors Dr. Chu, Dr. Englund, Dr. Martin, and Dr. Monto reported receiving personal fees or grants from multiple pharmaceutical companies. Dr. Hegmann reported being the editor of the American College of Occupational and Environmental Medicine practice guidelines. Coauthor Dr. Gaglani reported serving as cochair of the infectious diseases and immunization committee and the respiratory syncytial virus task force lead for the Texas Pediatric Society and the Texas Chapter of the American Academy of Pediatrics. No other disclosures were reported.

Children and adolescents ages 5-17 who received a bivalent COVID-19 mRNA vaccine were less likely to become infected with SARS-CoV-2 compared with those who were unvaccinated or received only the monovalent COVID-19 vaccine, according to new data published February 6 in JAMA.

“All eligible children and adolescents should remain up to date with recommended COVID-19 vaccinations,” wrote the authors, led by Leora R. Feldstein, PhD, with the US Centers for Disease Control and Prevention (CDC) in Atlanta.

By the end of 2023, at least 911 youths ages 5-17 had died from COVID-related causes.

Researchers found that compared with participants who did not receive the COVID-19 vaccine or got monovalent-only doses 180 days or more before, the adjusted vaccine effectiveness of a bivalent COVID-19 vaccine dose against SARS-CoV-2 infection was 51.3% (95% confidence interval [CI], 23.6%-71.9%) 7-60 days after vaccination. Relative effectiveness was 62.4% (95% CI, 38.5%-81.1%) 61-150 days after vaccination. The researchers said the confidence intervals were wide because of the small sample size.

The information can help inform public health strategies, the authors noted, especially as new variants emerge.
 

Bivalent Dose Recommended in Fall of 2022

Bivalent mRNA COVID vaccines were recommended in the United States for children and adolescents ages 12 years or older on Sept. 1, 2022, and for children ages 5-11 on Oct. 12, 2022, when Omicron BA.4/5 types were the predominant circulating variant.

The study included 2,959 participants who completed periodic surveys (answering questions on demographics, household details, chronic medical conditions, and COVID-19 symptoms) and submitted weekly self-collected nasal swabs (whether or not they had symptoms). Those in the study submitted additional nasal swabs if they developed any symptoms.

Median adherence to weekly upper respiratory specimen swabbing was high throughout the study period at 93.8%.

Data from Sept. 4, 2022, to Jan. 31, 2023, were combined from three prospective US cohort studies at six sites. In addition to the surveys, researchers used information from state immunization information systems and electronic medical records.
 

Most of the Infected Were Unvaccinated or Had Monovalent Vax

Of the 426 participants (14.4% of the combined cohorts) infected with SARS-CoV-2, 383 (89.9%) were either unvaccinated or received monovalent vaccine doses only.

Calculations were adjusted for age, sex, race, ethnicity, health conditions, prior SARS-CoV-2 infections, geographic location, proportion of circulating variants by site, and local virus prevalence.

Participants living in Oregon, for example, had the highest uptake of bivalent COVID-19 vaccine (56.2%), whereas those in Texas had the lowest (2.4%). Participants reporting Hispanic ethnicity had lower bivalent uptake (17.1%) compared with non-Hispanic participants of all races (27.1%).

Of the 2,207 participants who did not receive a bivalent dose, 24.2% were unvaccinated and 1,672 (75.8%) received at least 1 monovalent dose.

The researchers said they saw no sign of waning effectiveness 61-150 days (the limit for this analysis) after receipt of the bivalent COVID-19 vaccine.

They wrote that continuation of the cohorts will allow study of waning patterns, which could help inform vaccine recommendations.

Among the limitations of the study are that testing methods and the COVID-19 symptoms surveyed varied among the three cohorts, so there may be some differences in defining infection or symptomatic COVID. In addition, the researchers were not able to account for the social vulnerability index and immunocompromised status, which could have affected vaccine uptake and risk of SARS-CoV-2 infection.

This study was supported by the National Center for Immunization and Respiratory Diseases, US Centers for Disease Control and Prevention, and by the National Institute of Allergy and Infectious Diseases. Coauthor Dr. Caban-Martinez reported grants from the Florida Firefighter Cancer Initiative and the Florida Department of Health. Coauthors Dr. Chu, Dr. Englund, Dr. Martin, and Dr. Monto reported receiving personal fees or grants from multiple pharmaceutical companies. Dr. Hegmann reported being the editor of the American College of Occupational and Environmental Medicine practice guidelines. Coauthor Dr. Gaglani reported serving as cochair of the infectious diseases and immunization committee and the respiratory syncytial virus task force lead for the Texas Pediatric Society and the Texas Chapter of the American Academy of Pediatrics. No other disclosures were reported.

Amid the current wave of winter respiratory virus cases, influenza (types A and B) leads the way with the highest number of emergency room visits, followed closely by COVID-19, thanks to the JN.1 variant, and respiratory syncytial virus (RSV). With various similarities and differences in disease presentations, how challenging is it for physician’s to distinguish between, diagnose, and treat COVID-19 vs RSV and influenza? 

While these three respiratory viruses often have similar presentations, you may often find that patients with COVID-19 experience more fever, dry cough, and labored breathing, according to Cyrus Munguti, MD, assistant professor of medicine at KU Medical Center and hospitalist at Wesley Medical Center, Wichita, Kansas. 

“COVID-19 patients tend to have trouble breathing because the alveoli are affected and get inflammation and fluid accumulating in the lungs, and they end up having little to no oxygen,” said Dr. Munguti. “When we check their vital signs, patients with COVID tend to have hypoxemia [meaning saturations are less than 88% or 90% depending on the guidelines you follow].”

Patients with RSV and influenza tend to have more upper respiratory symptoms, like runny nose, sternutation — which later can progress to a cough in the upper airways, Dr. Munguti said. Unlike with COVID-19, patients with RSV and influenza — generally until they are very sick — often do not experience hypoxemia.

Inflammation in the airways can form as a result of all three viruses. Furthermore, bacteria that live in these airways could lead to a secondary bacterial infection in the upper respiratory and lower respiratory tracts — which could then cause pneumonia, Dr. Munguti said.

Another note: Changes in COVID-19 variants over the years have made it increasingly difficult to differentiate COVID-19 symptoms from those of RSV and influenza, according to Panagis Galiatsatos, MD, pulmonologist and associate professor at Johns Hopkins Medicine. “The Alpha through Delta variants really were a lot more lung tissue invading,” Dr. Galiatsatos said. “With the COVID-19 Omicron family — its capabilities are similar to what flu and RSV have done over the years. It’s more airway-invading.”

It’s critical to understand that diagnosing these diseases based on symptoms alone can be quite fickle, according to Dr. Galiatsatos. Objective tests, either at home or in a laboratory, are preferred. This is largely because disease presentation can depend on the host factor that the virus enters into, said Dr. Galiatsatos. For example, virus symptoms may look different for a patient with asthma and for someone with heart disease.

With children being among the most vulnerable for severe respiratory illness, testing and treatment are paramount and can be quite accurate in seasons where respiratory viruses thrive, according to Stan Spinner, MD, chief medical officer at Texas Children’s Pediatrics and Urgent Care. “When individuals are tested for either of these conditions when the prevalence in the community is low, we tend to see false positive results.” 

Texas Children’s Pediatrics and Urgent Care’s 12 sites offer COVID-19 and influenza antigen tests that have results ready in around 10 minutes. RSV testing, on the other hand, is limited to around half of the Texas Children’s Pediatrics and none of the urgent care locations, as the test can only be administered through a nasal swab conducted by a physician. As there is no specific treatment or therapy for RSV, the benefits of RSV testing can actually be quite low — often leading to frustrated parents regarding next steps after diagnosis.

“There are a number of respiratory viruses that may present with similar symptoms as RSV, and some of these viruses may even lead to much of the same adverse outcomes as the RSV virus,” Dr. Galiatsatos said. “Consequently, our physicians need to help parents understand this and give them guidance as to when to seek medical attention for worsening symptoms.”

There are two new RSV immunizations to treat certain demographics of patients, Dr. Spinner added. One is an RSV vaccine for infants under 8 months old, though there is limited supply. There is also an RSV vaccine available for pregnant women (between 32 and 36 weeks gestation) that has proved to be effective in fending off RSV infections in newborns up to 6 months old. 

Physicians should remain diligent in stressing to patients that vaccinations against COVID-19 and influenza play a key role in keeping their families safe during seasons of staggering respiratory infections.

“These vaccines are extremely safe, and while they may not always prevent infection, these vaccines are extremely effective in preventing more serious consequences, such as hospitalization or death,” Dr. Galiatsatos said.
 

A version of this article appeared on Medscape.com.

Amid the current wave of winter respiratory virus cases, influenza (types A and B) leads the way with the highest number of emergency room visits, followed closely by COVID-19, thanks to the JN.1 variant, and respiratory syncytial virus (RSV). With various similarities and differences in disease presentations, how challenging is it for physician’s to distinguish between, diagnose, and treat COVID-19 vs RSV and influenza? 

While these three respiratory viruses often have similar presentations, you may often find that patients with COVID-19 experience more fever, dry cough, and labored breathing, according to Cyrus Munguti, MD, assistant professor of medicine at KU Medical Center and hospitalist at Wesley Medical Center, Wichita, Kansas. 

“COVID-19 patients tend to have trouble breathing because the alveoli are affected and get inflammation and fluid accumulating in the lungs, and they end up having little to no oxygen,” said Dr. Munguti. “When we check their vital signs, patients with COVID tend to have hypoxemia [meaning saturations are less than 88% or 90% depending on the guidelines you follow].”

Patients with RSV and influenza tend to have more upper respiratory symptoms, like runny nose, sternutation — which later can progress to a cough in the upper airways, Dr. Munguti said. Unlike with COVID-19, patients with RSV and influenza — generally until they are very sick — often do not experience hypoxemia.

Inflammation in the airways can form as a result of all three viruses. Furthermore, bacteria that live in these airways could lead to a secondary bacterial infection in the upper respiratory and lower respiratory tracts — which could then cause pneumonia, Dr. Munguti said.

Another note: Changes in COVID-19 variants over the years have made it increasingly difficult to differentiate COVID-19 symptoms from those of RSV and influenza, according to Panagis Galiatsatos, MD, pulmonologist and associate professor at Johns Hopkins Medicine. “The Alpha through Delta variants really were a lot more lung tissue invading,” Dr. Galiatsatos said. “With the COVID-19 Omicron family — its capabilities are similar to what flu and RSV have done over the years. It’s more airway-invading.”

It’s critical to understand that diagnosing these diseases based on symptoms alone can be quite fickle, according to Dr. Galiatsatos. Objective tests, either at home or in a laboratory, are preferred. This is largely because disease presentation can depend on the host factor that the virus enters into, said Dr. Galiatsatos. For example, virus symptoms may look different for a patient with asthma and for someone with heart disease.

With children being among the most vulnerable for severe respiratory illness, testing and treatment are paramount and can be quite accurate in seasons where respiratory viruses thrive, according to Stan Spinner, MD, chief medical officer at Texas Children’s Pediatrics and Urgent Care. “When individuals are tested for either of these conditions when the prevalence in the community is low, we tend to see false positive results.” 

Texas Children’s Pediatrics and Urgent Care’s 12 sites offer COVID-19 and influenza antigen tests that have results ready in around 10 minutes. RSV testing, on the other hand, is limited to around half of the Texas Children’s Pediatrics and none of the urgent care locations, as the test can only be administered through a nasal swab conducted by a physician. As there is no specific treatment or therapy for RSV, the benefits of RSV testing can actually be quite low — often leading to frustrated parents regarding next steps after diagnosis.

“There are a number of respiratory viruses that may present with similar symptoms as RSV, and some of these viruses may even lead to much of the same adverse outcomes as the RSV virus,” Dr. Galiatsatos said. “Consequently, our physicians need to help parents understand this and give them guidance as to when to seek medical attention for worsening symptoms.”

There are two new RSV immunizations to treat certain demographics of patients, Dr. Spinner added. One is an RSV vaccine for infants under 8 months old, though there is limited supply. There is also an RSV vaccine available for pregnant women (between 32 and 36 weeks gestation) that has proved to be effective in fending off RSV infections in newborns up to 6 months old. 

Physicians should remain diligent in stressing to patients that vaccinations against COVID-19 and influenza play a key role in keeping their families safe during seasons of staggering respiratory infections.

“These vaccines are extremely safe, and while they may not always prevent infection, these vaccines are extremely effective in preventing more serious consequences, such as hospitalization or death,” Dr. Galiatsatos said.
 

A version of this article appeared on Medscape.com.

Amid the current wave of winter respiratory virus cases, influenza (types A and B) leads the way with the highest number of emergency room visits, followed closely by COVID-19, thanks to the JN.1 variant, and respiratory syncytial virus (RSV). With various similarities and differences in disease presentations, how challenging is it for physician’s to distinguish between, diagnose, and treat COVID-19 vs RSV and influenza? 

While these three respiratory viruses often have similar presentations, you may often find that patients with COVID-19 experience more fever, dry cough, and labored breathing, according to Cyrus Munguti, MD, assistant professor of medicine at KU Medical Center and hospitalist at Wesley Medical Center, Wichita, Kansas. 

“COVID-19 patients tend to have trouble breathing because the alveoli are affected and get inflammation and fluid accumulating in the lungs, and they end up having little to no oxygen,” said Dr. Munguti. “When we check their vital signs, patients with COVID tend to have hypoxemia [meaning saturations are less than 88% or 90% depending on the guidelines you follow].”

Patients with RSV and influenza tend to have more upper respiratory symptoms, like runny nose, sternutation — which later can progress to a cough in the upper airways, Dr. Munguti said. Unlike with COVID-19, patients with RSV and influenza — generally until they are very sick — often do not experience hypoxemia.

Inflammation in the airways can form as a result of all three viruses. Furthermore, bacteria that live in these airways could lead to a secondary bacterial infection in the upper respiratory and lower respiratory tracts — which could then cause pneumonia, Dr. Munguti said.

Another note: Changes in COVID-19 variants over the years have made it increasingly difficult to differentiate COVID-19 symptoms from those of RSV and influenza, according to Panagis Galiatsatos, MD, pulmonologist and associate professor at Johns Hopkins Medicine. “The Alpha through Delta variants really were a lot more lung tissue invading,” Dr. Galiatsatos said. “With the COVID-19 Omicron family — its capabilities are similar to what flu and RSV have done over the years. It’s more airway-invading.”

It’s critical to understand that diagnosing these diseases based on symptoms alone can be quite fickle, according to Dr. Galiatsatos. Objective tests, either at home or in a laboratory, are preferred. This is largely because disease presentation can depend on the host factor that the virus enters into, said Dr. Galiatsatos. For example, virus symptoms may look different for a patient with asthma and for someone with heart disease.

With children being among the most vulnerable for severe respiratory illness, testing and treatment are paramount and can be quite accurate in seasons where respiratory viruses thrive, according to Stan Spinner, MD, chief medical officer at Texas Children’s Pediatrics and Urgent Care. “When individuals are tested for either of these conditions when the prevalence in the community is low, we tend to see false positive results.” 

Texas Children’s Pediatrics and Urgent Care’s 12 sites offer COVID-19 and influenza antigen tests that have results ready in around 10 minutes. RSV testing, on the other hand, is limited to around half of the Texas Children’s Pediatrics and none of the urgent care locations, as the test can only be administered through a nasal swab conducted by a physician. As there is no specific treatment or therapy for RSV, the benefits of RSV testing can actually be quite low — often leading to frustrated parents regarding next steps after diagnosis.

“There are a number of respiratory viruses that may present with similar symptoms as RSV, and some of these viruses may even lead to much of the same adverse outcomes as the RSV virus,” Dr. Galiatsatos said. “Consequently, our physicians need to help parents understand this and give them guidance as to when to seek medical attention for worsening symptoms.”

There are two new RSV immunizations to treat certain demographics of patients, Dr. Spinner added. One is an RSV vaccine for infants under 8 months old, though there is limited supply. There is also an RSV vaccine available for pregnant women (between 32 and 36 weeks gestation) that has proved to be effective in fending off RSV infections in newborns up to 6 months old. 

Physicians should remain diligent in stressing to patients that vaccinations against COVID-19 and influenza play a key role in keeping their families safe during seasons of staggering respiratory infections.

“These vaccines are extremely safe, and while they may not always prevent infection, these vaccines are extremely effective in preventing more serious consequences, such as hospitalization or death,” Dr. Galiatsatos said.
 

A version of this article appeared on Medscape.com.

While COVID has now claimed more than 1 million lives in the United States alone, these aren’t the only fatalities caused at least in part by the virus. A small but growing number of Americans are surviving acute infections only to succumb months later to the lingering health problems caused by long COVID.

Much of the attention on long COVID has centered on the sometimes debilitating symptoms that strike people with the condition, with no formal diagnostic tests or standard treatments available, and the effect it has on quality of life. But new figures from the US Centers for Disease Control and Prevention (CDC) show that long COVID can also be deadly.

More than 5000 Americans have died from long COVID since the start of the pandemic, according to new estimates from the CDC.

This total, based on death certificate data collected by the CDC, includes a preliminary tally of 1491 long COVID deaths in 2023 in addition to 3544 fatalities previously reported from January 2020 through June 2022.

Guidance issued in 2023 on how to formally report long COVID as a cause of death on death certificates should help get a more accurate count of these fatalities going forward, said Robert Anderson, PhD, chief mortality statistician for the CDC, Atlanta, Georgia.

“We hope that the guidance will help cause of death certifiers be more aware of the impact of long COVID and more likely to report long COVID as a cause of death when appropriate,” Dr. Anderson said. “That said, we do not expect that this guidance will have a dramatic impact on the trend.”

There’s no standard definition or diagnostic test for long COVID. It’s typically diagnosed when people have symptoms at least 3 months after an acute infection that weren’t present before they got sick. As of the end of last year, about 7% of American adults had experienced long COVID at some point, the CDC estimated in September 2023.

The new death tally indicates long COVID remains a significant public health threat and is likely to grow in the years ahead, even though the pandemic may no longer be considered a global health crisis, experts said.

For example, the death certificate figures indicate:

COVID-19 was the third leading cause of American deaths in 2020 and 2021, and the fourth leading cause of death in the United States in 2023.

Nearly 1% of the more than one million deaths related to COVID-19 since the start of the pandemic have been attributed to long COVID, according to data released by the CDC.

The proportion of COVID-related deaths from long COVID peaked in June 2021 at 1.2% and again in April 2022 at 3.8%, according to the CDC. Both of these peaks coincided with periods of declining fatalities from acute infections.

“I do expect that deaths associated with long COVID will make up an increasingly larger proportion of total deaths associated with COVID-19,” said Mark Czeisler, PhD, a researcher at Harvard Medical School, Boston, Massachusetts, who has studied long COVID fatalities. 

Months and even years after an acute infection, long COVID can contribute to serious and potentially life-threatening conditions that impact nearly every major system in the body, according to the CDC guidelines for identifying the condition on death certificates. 

This means long COVID may often be listed as an underlying cause of death when people with this condition die of issues related to their heart, lungs, brain or kidneys, the CDC guidelines noted.

The risk for long COVID fatalities remains elevated for at least 6 months for people with milder acute infections and for at least 2 years in severe cases that require hospitalization, some previous research suggested.

As happens with other acute infections, certain people are more at risk for fatal case of long COVID. Age, race, and ethnicity have all been cited as risk factors by researchers who have been tracking the condition since the start of the pandemic.

Half of long COVID fatalities from July 2021 to June 2022 occurred in people aged 65 years and older, and another 23% were recorded among people aged 50-64 years old, according a report from CDC.

Long COVID death rates also varied by race and ethnicity, from a high of 14.1 cases per million among America Indian and Alaskan natives to a low of 1.5 cases per million among Asian people, the CDC found. Death rates per million were 6.7 for White individuals, 6.4 for Black people, and 4.7 for Hispanic people.

The disproportionate share of Black and Hispanic people who developed and died from severe acute infections may have left fewer survivors to develop long COVID, limiting long COVID fatalities among these groups, the CDC report concluded.

It’s also possible that long COVID fatalities were undercounted in these populations because they faced challenges accessing healthcare or seeing providers who could recognize the hallmark symptoms of long COVID.

It’s also difficult to distinguish between how many deaths related to the virus ultimately occur as a result of long COVID rather than acute infections. That’s because it may depend on a variety of factors, including how consistently medical examiners follow the CDC guidelines, said Ziyad Al-Aly, MD, chief of research at the Veterans Affairs, St. Louis Health Care System and a senior clinical epidemiologist at Washington University in St. Louis.

“Long COVID remains massively underdiagnosed, and death in people with long COVID is misattributed to other things,” Dr. Al-Aly said.

An accurate test for long COVID could help lead to a more accurate count of these fatalities, Dr. Czeisler said. Some preliminary research suggests that it might one day be possible to diagnose long COVID with a blood test.

“The timeline for such a test and the extent to which it would be widely applied is uncertain,” Dr. Czeisler noted, “though that would certainly be a gamechanger.”

A version of this article appeared on Medscape.com.

While COVID has now claimed more than 1 million lives in the United States alone, these aren’t the only fatalities caused at least in part by the virus. A small but growing number of Americans are surviving acute infections only to succumb months later to the lingering health problems caused by long COVID.

Much of the attention on long COVID has centered on the sometimes debilitating symptoms that strike people with the condition, with no formal diagnostic tests or standard treatments available, and the effect it has on quality of life. But new figures from the US Centers for Disease Control and Prevention (CDC) show that long COVID can also be deadly.

More than 5000 Americans have died from long COVID since the start of the pandemic, according to new estimates from the CDC.

This total, based on death certificate data collected by the CDC, includes a preliminary tally of 1491 long COVID deaths in 2023 in addition to 3544 fatalities previously reported from January 2020 through June 2022.

Guidance issued in 2023 on how to formally report long COVID as a cause of death on death certificates should help get a more accurate count of these fatalities going forward, said Robert Anderson, PhD, chief mortality statistician for the CDC, Atlanta, Georgia.

“We hope that the guidance will help cause of death certifiers be more aware of the impact of long COVID and more likely to report long COVID as a cause of death when appropriate,” Dr. Anderson said. “That said, we do not expect that this guidance will have a dramatic impact on the trend.”

There’s no standard definition or diagnostic test for long COVID. It’s typically diagnosed when people have symptoms at least 3 months after an acute infection that weren’t present before they got sick. As of the end of last year, about 7% of American adults had experienced long COVID at some point, the CDC estimated in September 2023.

The new death tally indicates long COVID remains a significant public health threat and is likely to grow in the years ahead, even though the pandemic may no longer be considered a global health crisis, experts said.

For example, the death certificate figures indicate:

COVID-19 was the third leading cause of American deaths in 2020 and 2021, and the fourth leading cause of death in the United States in 2023.

Nearly 1% of the more than one million deaths related to COVID-19 since the start of the pandemic have been attributed to long COVID, according to data released by the CDC.

The proportion of COVID-related deaths from long COVID peaked in June 2021 at 1.2% and again in April 2022 at 3.8%, according to the CDC. Both of these peaks coincided with periods of declining fatalities from acute infections.

“I do expect that deaths associated with long COVID will make up an increasingly larger proportion of total deaths associated with COVID-19,” said Mark Czeisler, PhD, a researcher at Harvard Medical School, Boston, Massachusetts, who has studied long COVID fatalities. 

Months and even years after an acute infection, long COVID can contribute to serious and potentially life-threatening conditions that impact nearly every major system in the body, according to the CDC guidelines for identifying the condition on death certificates. 

This means long COVID may often be listed as an underlying cause of death when people with this condition die of issues related to their heart, lungs, brain or kidneys, the CDC guidelines noted.

The risk for long COVID fatalities remains elevated for at least 6 months for people with milder acute infections and for at least 2 years in severe cases that require hospitalization, some previous research suggested.

As happens with other acute infections, certain people are more at risk for fatal case of long COVID. Age, race, and ethnicity have all been cited as risk factors by researchers who have been tracking the condition since the start of the pandemic.

Half of long COVID fatalities from July 2021 to June 2022 occurred in people aged 65 years and older, and another 23% were recorded among people aged 50-64 years old, according a report from CDC.

Long COVID death rates also varied by race and ethnicity, from a high of 14.1 cases per million among America Indian and Alaskan natives to a low of 1.5 cases per million among Asian people, the CDC found. Death rates per million were 6.7 for White individuals, 6.4 for Black people, and 4.7 for Hispanic people.

The disproportionate share of Black and Hispanic people who developed and died from severe acute infections may have left fewer survivors to develop long COVID, limiting long COVID fatalities among these groups, the CDC report concluded.

It’s also possible that long COVID fatalities were undercounted in these populations because they faced challenges accessing healthcare or seeing providers who could recognize the hallmark symptoms of long COVID.

It’s also difficult to distinguish between how many deaths related to the virus ultimately occur as a result of long COVID rather than acute infections. That’s because it may depend on a variety of factors, including how consistently medical examiners follow the CDC guidelines, said Ziyad Al-Aly, MD, chief of research at the Veterans Affairs, St. Louis Health Care System and a senior clinical epidemiologist at Washington University in St. Louis.

“Long COVID remains massively underdiagnosed, and death in people with long COVID is misattributed to other things,” Dr. Al-Aly said.

An accurate test for long COVID could help lead to a more accurate count of these fatalities, Dr. Czeisler said. Some preliminary research suggests that it might one day be possible to diagnose long COVID with a blood test.

“The timeline for such a test and the extent to which it would be widely applied is uncertain,” Dr. Czeisler noted, “though that would certainly be a gamechanger.”

A version of this article appeared on Medscape.com.

While COVID has now claimed more than 1 million lives in the United States alone, these aren’t the only fatalities caused at least in part by the virus. A small but growing number of Americans are surviving acute infections only to succumb months later to the lingering health problems caused by long COVID.

Much of the attention on long COVID has centered on the sometimes debilitating symptoms that strike people with the condition, with no formal diagnostic tests or standard treatments available, and the effect it has on quality of life. But new figures from the US Centers for Disease Control and Prevention (CDC) show that long COVID can also be deadly.

More than 5000 Americans have died from long COVID since the start of the pandemic, according to new estimates from the CDC.

This total, based on death certificate data collected by the CDC, includes a preliminary tally of 1491 long COVID deaths in 2023 in addition to 3544 fatalities previously reported from January 2020 through June 2022.

Guidance issued in 2023 on how to formally report long COVID as a cause of death on death certificates should help get a more accurate count of these fatalities going forward, said Robert Anderson, PhD, chief mortality statistician for the CDC, Atlanta, Georgia.

“We hope that the guidance will help cause of death certifiers be more aware of the impact of long COVID and more likely to report long COVID as a cause of death when appropriate,” Dr. Anderson said. “That said, we do not expect that this guidance will have a dramatic impact on the trend.”

There’s no standard definition or diagnostic test for long COVID. It’s typically diagnosed when people have symptoms at least 3 months after an acute infection that weren’t present before they got sick. As of the end of last year, about 7% of American adults had experienced long COVID at some point, the CDC estimated in September 2023.

The new death tally indicates long COVID remains a significant public health threat and is likely to grow in the years ahead, even though the pandemic may no longer be considered a global health crisis, experts said.

For example, the death certificate figures indicate:

COVID-19 was the third leading cause of American deaths in 2020 and 2021, and the fourth leading cause of death in the United States in 2023.

Nearly 1% of the more than one million deaths related to COVID-19 since the start of the pandemic have been attributed to long COVID, according to data released by the CDC.

The proportion of COVID-related deaths from long COVID peaked in June 2021 at 1.2% and again in April 2022 at 3.8%, according to the CDC. Both of these peaks coincided with periods of declining fatalities from acute infections.

“I do expect that deaths associated with long COVID will make up an increasingly larger proportion of total deaths associated with COVID-19,” said Mark Czeisler, PhD, a researcher at Harvard Medical School, Boston, Massachusetts, who has studied long COVID fatalities. 

Months and even years after an acute infection, long COVID can contribute to serious and potentially life-threatening conditions that impact nearly every major system in the body, according to the CDC guidelines for identifying the condition on death certificates. 

This means long COVID may often be listed as an underlying cause of death when people with this condition die of issues related to their heart, lungs, brain or kidneys, the CDC guidelines noted.

The risk for long COVID fatalities remains elevated for at least 6 months for people with milder acute infections and for at least 2 years in severe cases that require hospitalization, some previous research suggested.

As happens with other acute infections, certain people are more at risk for fatal case of long COVID. Age, race, and ethnicity have all been cited as risk factors by researchers who have been tracking the condition since the start of the pandemic.

Half of long COVID fatalities from July 2021 to June 2022 occurred in people aged 65 years and older, and another 23% were recorded among people aged 50-64 years old, according a report from CDC.

Long COVID death rates also varied by race and ethnicity, from a high of 14.1 cases per million among America Indian and Alaskan natives to a low of 1.5 cases per million among Asian people, the CDC found. Death rates per million were 6.7 for White individuals, 6.4 for Black people, and 4.7 for Hispanic people.

The disproportionate share of Black and Hispanic people who developed and died from severe acute infections may have left fewer survivors to develop long COVID, limiting long COVID fatalities among these groups, the CDC report concluded.

It’s also possible that long COVID fatalities were undercounted in these populations because they faced challenges accessing healthcare or seeing providers who could recognize the hallmark symptoms of long COVID.

It’s also difficult to distinguish between how many deaths related to the virus ultimately occur as a result of long COVID rather than acute infections. That’s because it may depend on a variety of factors, including how consistently medical examiners follow the CDC guidelines, said Ziyad Al-Aly, MD, chief of research at the Veterans Affairs, St. Louis Health Care System and a senior clinical epidemiologist at Washington University in St. Louis.

“Long COVID remains massively underdiagnosed, and death in people with long COVID is misattributed to other things,” Dr. Al-Aly said.

An accurate test for long COVID could help lead to a more accurate count of these fatalities, Dr. Czeisler said. Some preliminary research suggests that it might one day be possible to diagnose long COVID with a blood test.

“The timeline for such a test and the extent to which it would be widely applied is uncertain,” Dr. Czeisler noted, “though that would certainly be a gamechanger.”

A version of this article appeared on Medscape.com.

The COVID-19 pandemic may no longer be a global public health emergency, but millions continue to struggle with the aftermath: Long COVID. New research and clinical anecdotes suggest that certain individuals are more likely to be afflicted by the condition, nearly 4 years after the virus emerged. 

People with a history of allergies, anxiety or depression, arthritis, and autoimmune diseases and women are among those who appear more vulnerable to developing long COVID, said doctors who specialize in treating the condition.

Many patients with long COVID struggle with debilitating fatigue, brain fog, and cognitive impairment. The condition is also characterized by a catalog of other symptoms that may be difficult to recognize as long COVID, experts said. That’s especially true when patients may not mention seemingly unrelated information, such as underlying health conditions that might make them more vulnerable. This makes screening for certain conditions and investigating every symptom especially important. 

The severity of a patient’s initial infection is not the only determining factor for developing long COVID, experts said.

“Don’t judge the person based on how sick they were initially,” said Mark Bayley, MD, medical director of the Toronto Rehabilitation Institute at University Health Network and a professor with the Temerty Faculty of Medicine at the University of Toronto. “You have to evaluate every symptom as best you can to make sure you’re not missing anything else.” 

Someone who only had a bad cough or felt really unwell for just a few days and recovered but started feeling rotten again later — “that’s the person that we are seeing for long COVID,” said Dr. Bayley. 

While patients who become severely sick and require hospitalization have a higher risk of developing long COVID, this group size is small compared with the much larger number of people infected overall. As a result, despite the lower risk, those who only become mild to moderately sick make up the vast majority of patients in long COVID clinics. 

A small Northwestern Medicine study found that 41% of patients with long COVID never tested positive for COVID-19 but were found to have antibodies that indicated exposure to the virus. 

Doctors treating patients with long COVID should consider several risk factors, specialists said. They include:

• A history of asthma, eczema, or allergies
• Signs of autonomic nervous system dysfunction
• Preexisting immune system issues
• Chronic infections
• Diabetes
• Being slightly overweight
• A preexisting history of anxiety or depression
• Joint hypermobility ( being “double-jointed” with pain and other symptoms)

Screening for Allergies

Alba Azola, MD, assistant professor of Physical Medicine and Rehabilitation at Johns Hopkins Medicine, said a history of asthma, allergies, and eczema and an onset of new food allergies may be an important factor in long COVID that doctors should consider when evaluating at-risk patients.

It is important to identify this subgroup of patients because they respond to antihistamines and mast cell stabilizers, which not only relieve their allergy symptoms but may also help improve overall fatigue and their tolerance for basic activities like standing, Dr. Azola said.

A recently published systemic review of prospective cohort studies on long COVID also found that patients with preexisting allergic conditions like asthma or rhinitis may be linked to a higher risk of developing long COVID. The authors cautioned, however, that the evidence for the link is uncertain and more rigorous research is needed.

“It stands to reason that if your immune system tends to be a bit hyperactive that triggering it with a virus will make it worse,” said Dr. Bayley.


 

Signs of Dysautonomia, Joint Hypermobility

Patients should also be screened for signs and symptoms of dysautonomia, or autonomic nervous system disorder, such as postural orthostatic tachycardia syndrome (POTS) or another type of autonomic dysfunction, doctors said.

“There’s a whole list because the autonomic nervous system involves every part of your body, every system,” Dr. Azola said.

Issues with standing, vision, digestion, urination, and bowel movement, for example, appear to be multisystemic problems but may all be linked to autonomic dysfunction, she explained.

Patients who have POTS usually experience a worsening of symptoms after COVID infection, Dr. Azola said, adding that some patients may have even assumed their pre-COVID symptoms of POTS were normal. 

She also screens for joint hypermobility or hypermobile Ehlers-Danlos syndrome, which affects connective tissue. Research has long shown a relationship between autonomic dysfunction, mast cell activation syndrome (repeated severe allergy symptoms that affect multiple systems), and the presence of hypermobility, Dr. Azola said. She added that gentle physical therapy can be helpful for patients with hypermobility issues.

Previous studies before and during the pandemic have also found that a substantial subset of patients with myalgic encephalomyelitis/chronic fatigue syndrome, which shares many similarities with long COVID, also have connective tissue/hypermobility disorders.
 

Depression, Anxiety, and Female Patients

People with a preexisting history of anxiety or depression also appear to be at a higher risk for long COVID, Dr. Bayley said, noting that patients with these conditions appear more vulnerable to brain fog and other difficulties brought on by COVID infection. Earlier research found biochemical evidence of brain inflammation that correlates with symptoms of anxiety in patients with long COVID.

“We know that depression is related to neurotransmitters like adrenaline and serotonin,” Dr. Bayley said. “The chronic inflammation that’s associated with COVID — this will make people feel more depressed because they’re not getting the neurotransmitters in their brain releasing at the right times.”

It may also put patients at a risk for anxiety due to fears of post-exertional malaise (PEM), where symptoms worsen after even very minor physical or mental exertion and can last days or weeks.

“You can see how that leads to a bit of a vicious cycle,” said Dr. Bayley, explaining that the cycle of fear and avoidance makes patients less active and deconditioned. But he added that learning to manage their activity can actually help mitigate PEM due to the anti-inflammatory effects of exercise, its positive impact on mood, and benefits to the immune and cardiovascular systems. 

Meanwhile, a number of epidemiologic studies have found a higher prevalence of long COVID among women. Perimenopausal and menopausal women in particular appeared more prone, and at least one study reported that women under 50 years were five times more likely to develop post-COVID symptoms than men.

A recent small UK study that focused on COVID-19 hospitalizations found that women who had lower levels of inflammatory biomarkers at admission were more likely to experience certain long-term symptoms like muscle ache, low mood and anxiety, adding to earlier research linking female patients, long COVID, and neuropsychiatric symptoms. 


 

History of Immune Dysfunction, Diabetes, Elevated Body Mass Index (BMI)

Immune dysfunction, a history of recurrent infections, or chronic sinus infections are also common among patients under Dr. Azola and her team’s care. Those who have arthritis or other autoimmune diseases such as lupus also appear more vulnerable, Dr. Bayley said, along with patients who have diabetes or a little overweight.

Recent research out of the University of Queensland found that being overweight can negatively affect the body’s immune response to the SARS-CoV-2 virus. Blood samples collected 13 months after infection, for example, found that individuals with a higher BMI had lower antibody activity and a reduced percentage of relevant B cells that help build antibodies to fight the virus. Being overweight did not affect the antibody response to the COVID-19 vaccines, however, giving further support for vaccination over infection-induced immunity as an important protective factor, researchers said.
 

Narrowing the Information Gap

The latest Centers for Centers for Disease Control and Prevention’s Household Pulse Survey estimates that 14% of all American adults have had long COVID at some point, with more than 5% of the entire adult population currently experiencing long COVID. With millions of Americans affected, experts and advocates highlight the importance of bridging the knowledge gap with primary care doctors. 

Long COVID specialists said understanding these connections helps guide treatment plans and manage symptoms, such as finding the right medications, improving tolerance, optimizing sleep, applying cognitive strategies for brain fog, dietary changes, respiratory exercises to help with shortness of breath, and finding the fine line between what causes PEM and what doesn’t. 

“Whenever you see a disease like this one, you always have to ask yourself, is there an alternative way of looking at this that might explain what we’re seeing?” said Dr. Bayley. “It remains to be said that all bets are still open and that we need to continue to be very broad thinking about this.”

A version of this article appeared on Medscape.com.

The COVID-19 pandemic may no longer be a global public health emergency, but millions continue to struggle with the aftermath: Long COVID. New research and clinical anecdotes suggest that certain individuals are more likely to be afflicted by the condition, nearly 4 years after the virus emerged. 

People with a history of allergies, anxiety or depression, arthritis, and autoimmune diseases and women are among those who appear more vulnerable to developing long COVID, said doctors who specialize in treating the condition.

Many patients with long COVID struggle with debilitating fatigue, brain fog, and cognitive impairment. The condition is also characterized by a catalog of other symptoms that may be difficult to recognize as long COVID, experts said. That’s especially true when patients may not mention seemingly unrelated information, such as underlying health conditions that might make them more vulnerable. This makes screening for certain conditions and investigating every symptom especially important. 

The severity of a patient’s initial infection is not the only determining factor for developing long COVID, experts said.

“Don’t judge the person based on how sick they were initially,” said Mark Bayley, MD, medical director of the Toronto Rehabilitation Institute at University Health Network and a professor with the Temerty Faculty of Medicine at the University of Toronto. “You have to evaluate every symptom as best you can to make sure you’re not missing anything else.” 

Someone who only had a bad cough or felt really unwell for just a few days and recovered but started feeling rotten again later — “that’s the person that we are seeing for long COVID,” said Dr. Bayley. 

While patients who become severely sick and require hospitalization have a higher risk of developing long COVID, this group size is small compared with the much larger number of people infected overall. As a result, despite the lower risk, those who only become mild to moderately sick make up the vast majority of patients in long COVID clinics. 

A small Northwestern Medicine study found that 41% of patients with long COVID never tested positive for COVID-19 but were found to have antibodies that indicated exposure to the virus. 

Doctors treating patients with long COVID should consider several risk factors, specialists said. They include:

• A history of asthma, eczema, or allergies
• Signs of autonomic nervous system dysfunction
• Preexisting immune system issues
• Chronic infections
• Diabetes
• Being slightly overweight
• A preexisting history of anxiety or depression
• Joint hypermobility ( being “double-jointed” with pain and other symptoms)

Screening for Allergies

Alba Azola, MD, assistant professor of Physical Medicine and Rehabilitation at Johns Hopkins Medicine, said a history of asthma, allergies, and eczema and an onset of new food allergies may be an important factor in long COVID that doctors should consider when evaluating at-risk patients.

It is important to identify this subgroup of patients because they respond to antihistamines and mast cell stabilizers, which not only relieve their allergy symptoms but may also help improve overall fatigue and their tolerance for basic activities like standing, Dr. Azola said.

A recently published systemic review of prospective cohort studies on long COVID also found that patients with preexisting allergic conditions like asthma or rhinitis may be linked to a higher risk of developing long COVID. The authors cautioned, however, that the evidence for the link is uncertain and more rigorous research is needed.

“It stands to reason that if your immune system tends to be a bit hyperactive that triggering it with a virus will make it worse,” said Dr. Bayley.


 

Signs of Dysautonomia, Joint Hypermobility

Patients should also be screened for signs and symptoms of dysautonomia, or autonomic nervous system disorder, such as postural orthostatic tachycardia syndrome (POTS) or another type of autonomic dysfunction, doctors said.

“There’s a whole list because the autonomic nervous system involves every part of your body, every system,” Dr. Azola said.

Issues with standing, vision, digestion, urination, and bowel movement, for example, appear to be multisystemic problems but may all be linked to autonomic dysfunction, she explained.

Patients who have POTS usually experience a worsening of symptoms after COVID infection, Dr. Azola said, adding that some patients may have even assumed their pre-COVID symptoms of POTS were normal. 

She also screens for joint hypermobility or hypermobile Ehlers-Danlos syndrome, which affects connective tissue. Research has long shown a relationship between autonomic dysfunction, mast cell activation syndrome (repeated severe allergy symptoms that affect multiple systems), and the presence of hypermobility, Dr. Azola said. She added that gentle physical therapy can be helpful for patients with hypermobility issues.

Previous studies before and during the pandemic have also found that a substantial subset of patients with myalgic encephalomyelitis/chronic fatigue syndrome, which shares many similarities with long COVID, also have connective tissue/hypermobility disorders.
 

Depression, Anxiety, and Female Patients

People with a preexisting history of anxiety or depression also appear to be at a higher risk for long COVID, Dr. Bayley said, noting that patients with these conditions appear more vulnerable to brain fog and other difficulties brought on by COVID infection. Earlier research found biochemical evidence of brain inflammation that correlates with symptoms of anxiety in patients with long COVID.

“We know that depression is related to neurotransmitters like adrenaline and serotonin,” Dr. Bayley said. “The chronic inflammation that’s associated with COVID — this will make people feel more depressed because they’re not getting the neurotransmitters in their brain releasing at the right times.”

It may also put patients at a risk for anxiety due to fears of post-exertional malaise (PEM), where symptoms worsen after even very minor physical or mental exertion and can last days or weeks.

“You can see how that leads to a bit of a vicious cycle,” said Dr. Bayley, explaining that the cycle of fear and avoidance makes patients less active and deconditioned. But he added that learning to manage their activity can actually help mitigate PEM due to the anti-inflammatory effects of exercise, its positive impact on mood, and benefits to the immune and cardiovascular systems. 

Meanwhile, a number of epidemiologic studies have found a higher prevalence of long COVID among women. Perimenopausal and menopausal women in particular appeared more prone, and at least one study reported that women under 50 years were five times more likely to develop post-COVID symptoms than men.

A recent small UK study that focused on COVID-19 hospitalizations found that women who had lower levels of inflammatory biomarkers at admission were more likely to experience certain long-term symptoms like muscle ache, low mood and anxiety, adding to earlier research linking female patients, long COVID, and neuropsychiatric symptoms. 


 

History of Immune Dysfunction, Diabetes, Elevated Body Mass Index (BMI)

Immune dysfunction, a history of recurrent infections, or chronic sinus infections are also common among patients under Dr. Azola and her team’s care. Those who have arthritis or other autoimmune diseases such as lupus also appear more vulnerable, Dr. Bayley said, along with patients who have diabetes or a little overweight.

Recent research out of the University of Queensland found that being overweight can negatively affect the body’s immune response to the SARS-CoV-2 virus. Blood samples collected 13 months after infection, for example, found that individuals with a higher BMI had lower antibody activity and a reduced percentage of relevant B cells that help build antibodies to fight the virus. Being overweight did not affect the antibody response to the COVID-19 vaccines, however, giving further support for vaccination over infection-induced immunity as an important protective factor, researchers said.
 

Narrowing the Information Gap

The latest Centers for Centers for Disease Control and Prevention’s Household Pulse Survey estimates that 14% of all American adults have had long COVID at some point, with more than 5% of the entire adult population currently experiencing long COVID. With millions of Americans affected, experts and advocates highlight the importance of bridging the knowledge gap with primary care doctors. 

Long COVID specialists said understanding these connections helps guide treatment plans and manage symptoms, such as finding the right medications, improving tolerance, optimizing sleep, applying cognitive strategies for brain fog, dietary changes, respiratory exercises to help with shortness of breath, and finding the fine line between what causes PEM and what doesn’t. 

“Whenever you see a disease like this one, you always have to ask yourself, is there an alternative way of looking at this that might explain what we’re seeing?” said Dr. Bayley. “It remains to be said that all bets are still open and that we need to continue to be very broad thinking about this.”

A version of this article appeared on Medscape.com.

The COVID-19 pandemic may no longer be a global public health emergency, but millions continue to struggle with the aftermath: Long COVID. New research and clinical anecdotes suggest that certain individuals are more likely to be afflicted by the condition, nearly 4 years after the virus emerged. 

People with a history of allergies, anxiety or depression, arthritis, and autoimmune diseases and women are among those who appear more vulnerable to developing long COVID, said doctors who specialize in treating the condition.

Many patients with long COVID struggle with debilitating fatigue, brain fog, and cognitive impairment. The condition is also characterized by a catalog of other symptoms that may be difficult to recognize as long COVID, experts said. That’s especially true when patients may not mention seemingly unrelated information, such as underlying health conditions that might make them more vulnerable. This makes screening for certain conditions and investigating every symptom especially important. 

The severity of a patient’s initial infection is not the only determining factor for developing long COVID, experts said.

“Don’t judge the person based on how sick they were initially,” said Mark Bayley, MD, medical director of the Toronto Rehabilitation Institute at University Health Network and a professor with the Temerty Faculty of Medicine at the University of Toronto. “You have to evaluate every symptom as best you can to make sure you’re not missing anything else.” 

Someone who only had a bad cough or felt really unwell for just a few days and recovered but started feeling rotten again later — “that’s the person that we are seeing for long COVID,” said Dr. Bayley. 

While patients who become severely sick and require hospitalization have a higher risk of developing long COVID, this group size is small compared with the much larger number of people infected overall. As a result, despite the lower risk, those who only become mild to moderately sick make up the vast majority of patients in long COVID clinics. 

A small Northwestern Medicine study found that 41% of patients with long COVID never tested positive for COVID-19 but were found to have antibodies that indicated exposure to the virus. 

Doctors treating patients with long COVID should consider several risk factors, specialists said. They include:

• A history of asthma, eczema, or allergies
• Signs of autonomic nervous system dysfunction
• Preexisting immune system issues
• Chronic infections
• Diabetes
• Being slightly overweight
• A preexisting history of anxiety or depression
• Joint hypermobility ( being “double-jointed” with pain and other symptoms)

Screening for Allergies

Alba Azola, MD, assistant professor of Physical Medicine and Rehabilitation at Johns Hopkins Medicine, said a history of asthma, allergies, and eczema and an onset of new food allergies may be an important factor in long COVID that doctors should consider when evaluating at-risk patients.

It is important to identify this subgroup of patients because they respond to antihistamines and mast cell stabilizers, which not only relieve their allergy symptoms but may also help improve overall fatigue and their tolerance for basic activities like standing, Dr. Azola said.

A recently published systemic review of prospective cohort studies on long COVID also found that patients with preexisting allergic conditions like asthma or rhinitis may be linked to a higher risk of developing long COVID. The authors cautioned, however, that the evidence for the link is uncertain and more rigorous research is needed.

“It stands to reason that if your immune system tends to be a bit hyperactive that triggering it with a virus will make it worse,” said Dr. Bayley.


 

Signs of Dysautonomia, Joint Hypermobility

Patients should also be screened for signs and symptoms of dysautonomia, or autonomic nervous system disorder, such as postural orthostatic tachycardia syndrome (POTS) or another type of autonomic dysfunction, doctors said.

“There’s a whole list because the autonomic nervous system involves every part of your body, every system,” Dr. Azola said.

Issues with standing, vision, digestion, urination, and bowel movement, for example, appear to be multisystemic problems but may all be linked to autonomic dysfunction, she explained.

Patients who have POTS usually experience a worsening of symptoms after COVID infection, Dr. Azola said, adding that some patients may have even assumed their pre-COVID symptoms of POTS were normal. 

She also screens for joint hypermobility or hypermobile Ehlers-Danlos syndrome, which affects connective tissue. Research has long shown a relationship between autonomic dysfunction, mast cell activation syndrome (repeated severe allergy symptoms that affect multiple systems), and the presence of hypermobility, Dr. Azola said. She added that gentle physical therapy can be helpful for patients with hypermobility issues.

Previous studies before and during the pandemic have also found that a substantial subset of patients with myalgic encephalomyelitis/chronic fatigue syndrome, which shares many similarities with long COVID, also have connective tissue/hypermobility disorders.
 

Depression, Anxiety, and Female Patients

People with a preexisting history of anxiety or depression also appear to be at a higher risk for long COVID, Dr. Bayley said, noting that patients with these conditions appear more vulnerable to brain fog and other difficulties brought on by COVID infection. Earlier research found biochemical evidence of brain inflammation that correlates with symptoms of anxiety in patients with long COVID.

“We know that depression is related to neurotransmitters like adrenaline and serotonin,” Dr. Bayley said. “The chronic inflammation that’s associated with COVID — this will make people feel more depressed because they’re not getting the neurotransmitters in their brain releasing at the right times.”

It may also put patients at a risk for anxiety due to fears of post-exertional malaise (PEM), where symptoms worsen after even very minor physical or mental exertion and can last days or weeks.

“You can see how that leads to a bit of a vicious cycle,” said Dr. Bayley, explaining that the cycle of fear and avoidance makes patients less active and deconditioned. But he added that learning to manage their activity can actually help mitigate PEM due to the anti-inflammatory effects of exercise, its positive impact on mood, and benefits to the immune and cardiovascular systems. 

Meanwhile, a number of epidemiologic studies have found a higher prevalence of long COVID among women. Perimenopausal and menopausal women in particular appeared more prone, and at least one study reported that women under 50 years were five times more likely to develop post-COVID symptoms than men.

A recent small UK study that focused on COVID-19 hospitalizations found that women who had lower levels of inflammatory biomarkers at admission were more likely to experience certain long-term symptoms like muscle ache, low mood and anxiety, adding to earlier research linking female patients, long COVID, and neuropsychiatric symptoms. 


 

History of Immune Dysfunction, Diabetes, Elevated Body Mass Index (BMI)

Immune dysfunction, a history of recurrent infections, or chronic sinus infections are also common among patients under Dr. Azola and her team’s care. Those who have arthritis or other autoimmune diseases such as lupus also appear more vulnerable, Dr. Bayley said, along with patients who have diabetes or a little overweight.

Recent research out of the University of Queensland found that being overweight can negatively affect the body’s immune response to the SARS-CoV-2 virus. Blood samples collected 13 months after infection, for example, found that individuals with a higher BMI had lower antibody activity and a reduced percentage of relevant B cells that help build antibodies to fight the virus. Being overweight did not affect the antibody response to the COVID-19 vaccines, however, giving further support for vaccination over infection-induced immunity as an important protective factor, researchers said.
 

Narrowing the Information Gap

The latest Centers for Centers for Disease Control and Prevention’s Household Pulse Survey estimates that 14% of all American adults have had long COVID at some point, with more than 5% of the entire adult population currently experiencing long COVID. With millions of Americans affected, experts and advocates highlight the importance of bridging the knowledge gap with primary care doctors. 

Long COVID specialists said understanding these connections helps guide treatment plans and manage symptoms, such as finding the right medications, improving tolerance, optimizing sleep, applying cognitive strategies for brain fog, dietary changes, respiratory exercises to help with shortness of breath, and finding the fine line between what causes PEM and what doesn’t. 

“Whenever you see a disease like this one, you always have to ask yourself, is there an alternative way of looking at this that might explain what we’re seeing?” said Dr. Bayley. “It remains to be said that all bets are still open and that we need to continue to be very broad thinking about this.”

A version of this article appeared on Medscape.com.

The U.S. government has expanded a program offering free COVID-19 and flu tests and treatment.

The Home Test to Treat program is virtual and offers at-home rapid tests, telehealth sessions, and at-home treatments to people nationwide. The program is a collaboration among the National Institutes of Health, the Administration for Strategic Preparedness and Response, and the CDC. It began as a pilot program in some locations this year.

“With its expansion, the Home Test to Treat program will now offer free testing, telehealth and treatment for both COVID-19 and for influenza (flu) A and B,” the NIH said in a press release. “It is the first public health program that includes home testing technology at such a scale for both COVID-19 and flu.”

The news release says that anyone 18 or over with a current positive test for COVID-19 or flu can get free telehealth care and medicine delivered to their home.

Adults who don’t have COVID-19 or the flu can get free tests if they are uninsured or are enrolled in Medicare, Medicaid, the Veterans Affairs health care system, or Indian Health Services. If they test positive later, they can get free telehealth care and, if prescribed, treatment.

“I think that these [telehealth] delivery mechanisms are going to be absolutely crucial to unburden the in-person offices and the lines that we have and wait times,” said Michael Mina, MD, chief science officer at eMed, the company that helped implement the new Home Test to Treat program, to ABC News.

ABC notes that COVID tests can also be ordered at covidtests.gov – four tests per household or eight for those who have yet to order any this fall.

A version of this article appeared on WebMD.com .

The U.S. government has expanded a program offering free COVID-19 and flu tests and treatment.

The Home Test to Treat program is virtual and offers at-home rapid tests, telehealth sessions, and at-home treatments to people nationwide. The program is a collaboration among the National Institutes of Health, the Administration for Strategic Preparedness and Response, and the CDC. It began as a pilot program in some locations this year.

“With its expansion, the Home Test to Treat program will now offer free testing, telehealth and treatment for both COVID-19 and for influenza (flu) A and B,” the NIH said in a press release. “It is the first public health program that includes home testing technology at such a scale for both COVID-19 and flu.”

The news release says that anyone 18 or over with a current positive test for COVID-19 or flu can get free telehealth care and medicine delivered to their home.

Adults who don’t have COVID-19 or the flu can get free tests if they are uninsured or are enrolled in Medicare, Medicaid, the Veterans Affairs health care system, or Indian Health Services. If they test positive later, they can get free telehealth care and, if prescribed, treatment.

“I think that these [telehealth] delivery mechanisms are going to be absolutely crucial to unburden the in-person offices and the lines that we have and wait times,” said Michael Mina, MD, chief science officer at eMed, the company that helped implement the new Home Test to Treat program, to ABC News.

ABC notes that COVID tests can also be ordered at covidtests.gov – four tests per household or eight for those who have yet to order any this fall.

A version of this article appeared on WebMD.com .

The U.S. government has expanded a program offering free COVID-19 and flu tests and treatment.

The Home Test to Treat program is virtual and offers at-home rapid tests, telehealth sessions, and at-home treatments to people nationwide. The program is a collaboration among the National Institutes of Health, the Administration for Strategic Preparedness and Response, and the CDC. It began as a pilot program in some locations this year.

“With its expansion, the Home Test to Treat program will now offer free testing, telehealth and treatment for both COVID-19 and for influenza (flu) A and B,” the NIH said in a press release. “It is the first public health program that includes home testing technology at such a scale for both COVID-19 and flu.”

The news release says that anyone 18 or over with a current positive test for COVID-19 or flu can get free telehealth care and medicine delivered to their home.

Adults who don’t have COVID-19 or the flu can get free tests if they are uninsured or are enrolled in Medicare, Medicaid, the Veterans Affairs health care system, or Indian Health Services. If they test positive later, they can get free telehealth care and, if prescribed, treatment.

“I think that these [telehealth] delivery mechanisms are going to be absolutely crucial to unburden the in-person offices and the lines that we have and wait times,” said Michael Mina, MD, chief science officer at eMed, the company that helped implement the new Home Test to Treat program, to ABC News.

ABC notes that COVID tests can also be ordered at covidtests.gov – four tests per household or eight for those who have yet to order any this fall.

A version of this article appeared on WebMD.com .

No one planning holiday gatherings or travel wants to hear this, but the rise of a new COVID-19 variant, JN.1, is concerning experts, who say it may threaten those good times. 

The good news is recent research suggests the 2023-2024 COVID-19 vaccine appears to work against this newest variant. But so few people have gotten the latest vaccine — less than 16% of U.S. adults — that some experts suggest it’s time for the CDC to urge the public who haven’t it to do so now, so the antibodies can kick in before the festivities.

“A significant wave [of JN.1] has started here and could be blunted with a high booster rate and mitigation measures,” said Eric Topol, MD, professor and executive vice president of Scripps Research in La Jolla, CA, and editor-in-chief of Medscape, a sister site of this news organization.

COVID metrics, meanwhile, have started to climb again. Nearly 10,000 people were hospitalized for COVID in the U.S. for the week ending Nov. 25, the CDC said, a 10% increase over the previous week. 
 

Who’s Who in the Family Tree

JN.1, an Omicron subvariant, was first detected in the U.S. in September and is termed “a notable descendent lineage” of Omicron subvariant BA.2.86 by the World Health Organization. When BA.2.86, also known as Pirola, was first identified in August, it appeared very different from other variants, the CDC said. That triggered concerns it might be more infectious than previous ones, even for people with immunity from vaccination and previous infections. 

“JN.1 is Pirola’s kid,” said Rajendram Rajnarayanan, PhD, assistant dean of research and associate professor at the New York Institute of Technology at Arkansas State University, who maintains a COVID-19 variant database. The variant BA.2.86 and offspring are worrisome due to the mutations, he said.
 

How Widespread Is JN.1?

As of Nov. 27, the CDC says, BA.2.86 is projected to comprise 5%-15% of circulating variants in the U.S. “The expected public health risk of this variant, including its offshoot JN.1, is low,” the agency said.

Currently, JN.1 is reported more often in Europe, Dr. Rajnarayanan said, but some countries have better reporting data than others. “It has probably spread to every country tracking COVID,’’ he said, due to the mutations in the spike protein that make it easier for it to bind and infect.

Wastewater data suggest the variant’s rise is helping to fuel a wave, Dr. Topol said. 
 

Vaccine Effectiveness Against JN.1, Other New Variants 

The new XBB.1.5 monovalent vaccine, protects against XBB.1.5, another Omicron subvariant, but also JN.1 and other “emergent” viruses, a team of researchers reported Nov. 26 in a study on bioRxiv that has not yet been certified by peer review.

The updated vaccine, when given to uninfected people, boosted antibodies about 27-fold against XBB.1.5 and about 13- to 27-fold against JN.1 and other emergent viruses, the researchers reported.

While even primary doses of the COVID vaccine will likely help protect against the new JN.1 subvariant, “if you got the XBB.1.5 booster, it is going to be protecting you better against this new variant,” Dr. Rajnarayanan said.
 

2023-2024 Vaccine Uptake Low 

In November, the CDC posted the first detailed estimates of who did. As of Nov. 18, less than 16% of U.S. adults had, with nearly 15% saying they planned to get it.

Coverage among children is lower, with just 6.3% of children up to date on the newest vaccine and 19% of parents saying they planned to get the 2023-2024 vaccine for their children.
 

Predictions, Mitigation

While some experts say a peak due to JN.1 is expected in the weeks ahead, Dr. Topol said it’s impossible to predict exactly how JN.1 will play out.

“It’s not going to be a repeat of November 2021,” when Omicron surfaced, Dr. Rajnarayanan predicted. Within 4 weeks of the World Health Organization declaring Omicron as a virus of concern, it spread around the world.

Mitigation measures can help, Dr. Rajnarayanan said. He suggested:

Get the new vaccine, and especially encourage vulnerable family and friends to do so.

If you are gathering inside for holiday festivities, improve circulation in the house, if possible.

Wear masks in airports and on planes and other public transportation.

A version of this article appeared on WebMD.com.

No one planning holiday gatherings or travel wants to hear this, but the rise of a new COVID-19 variant, JN.1, is concerning experts, who say it may threaten those good times. 

The good news is recent research suggests the 2023-2024 COVID-19 vaccine appears to work against this newest variant. But so few people have gotten the latest vaccine — less than 16% of U.S. adults — that some experts suggest it’s time for the CDC to urge the public who haven’t it to do so now, so the antibodies can kick in before the festivities.

“A significant wave [of JN.1] has started here and could be blunted with a high booster rate and mitigation measures,” said Eric Topol, MD, professor and executive vice president of Scripps Research in La Jolla, CA, and editor-in-chief of Medscape, a sister site of this news organization.

COVID metrics, meanwhile, have started to climb again. Nearly 10,000 people were hospitalized for COVID in the U.S. for the week ending Nov. 25, the CDC said, a 10% increase over the previous week. 
 

Who’s Who in the Family Tree

JN.1, an Omicron subvariant, was first detected in the U.S. in September and is termed “a notable descendent lineage” of Omicron subvariant BA.2.86 by the World Health Organization. When BA.2.86, also known as Pirola, was first identified in August, it appeared very different from other variants, the CDC said. That triggered concerns it might be more infectious than previous ones, even for people with immunity from vaccination and previous infections. 

“JN.1 is Pirola’s kid,” said Rajendram Rajnarayanan, PhD, assistant dean of research and associate professor at the New York Institute of Technology at Arkansas State University, who maintains a COVID-19 variant database. The variant BA.2.86 and offspring are worrisome due to the mutations, he said.
 

How Widespread Is JN.1?

As of Nov. 27, the CDC says, BA.2.86 is projected to comprise 5%-15% of circulating variants in the U.S. “The expected public health risk of this variant, including its offshoot JN.1, is low,” the agency said.

Currently, JN.1 is reported more often in Europe, Dr. Rajnarayanan said, but some countries have better reporting data than others. “It has probably spread to every country tracking COVID,’’ he said, due to the mutations in the spike protein that make it easier for it to bind and infect.

Wastewater data suggest the variant’s rise is helping to fuel a wave, Dr. Topol said. 
 

Vaccine Effectiveness Against JN.1, Other New Variants 

The new XBB.1.5 monovalent vaccine, protects against XBB.1.5, another Omicron subvariant, but also JN.1 and other “emergent” viruses, a team of researchers reported Nov. 26 in a study on bioRxiv that has not yet been certified by peer review.

The updated vaccine, when given to uninfected people, boosted antibodies about 27-fold against XBB.1.5 and about 13- to 27-fold against JN.1 and other emergent viruses, the researchers reported.

While even primary doses of the COVID vaccine will likely help protect against the new JN.1 subvariant, “if you got the XBB.1.5 booster, it is going to be protecting you better against this new variant,” Dr. Rajnarayanan said.
 

2023-2024 Vaccine Uptake Low 

In November, the CDC posted the first detailed estimates of who did. As of Nov. 18, less than 16% of U.S. adults had, with nearly 15% saying they planned to get it.

Coverage among children is lower, with just 6.3% of children up to date on the newest vaccine and 19% of parents saying they planned to get the 2023-2024 vaccine for their children.
 

Predictions, Mitigation

While some experts say a peak due to JN.1 is expected in the weeks ahead, Dr. Topol said it’s impossible to predict exactly how JN.1 will play out.

“It’s not going to be a repeat of November 2021,” when Omicron surfaced, Dr. Rajnarayanan predicted. Within 4 weeks of the World Health Organization declaring Omicron as a virus of concern, it spread around the world.

Mitigation measures can help, Dr. Rajnarayanan said. He suggested:

Get the new vaccine, and especially encourage vulnerable family and friends to do so.

If you are gathering inside for holiday festivities, improve circulation in the house, if possible.

Wear masks in airports and on planes and other public transportation.

A version of this article appeared on WebMD.com.

No one planning holiday gatherings or travel wants to hear this, but the rise of a new COVID-19 variant, JN.1, is concerning experts, who say it may threaten those good times. 

The good news is recent research suggests the 2023-2024 COVID-19 vaccine appears to work against this newest variant. But so few people have gotten the latest vaccine — less than 16% of U.S. adults — that some experts suggest it’s time for the CDC to urge the public who haven’t it to do so now, so the antibodies can kick in before the festivities.

“A significant wave [of JN.1] has started here and could be blunted with a high booster rate and mitigation measures,” said Eric Topol, MD, professor and executive vice president of Scripps Research in La Jolla, CA, and editor-in-chief of Medscape, a sister site of this news organization.

COVID metrics, meanwhile, have started to climb again. Nearly 10,000 people were hospitalized for COVID in the U.S. for the week ending Nov. 25, the CDC said, a 10% increase over the previous week. 
 

Who’s Who in the Family Tree

JN.1, an Omicron subvariant, was first detected in the U.S. in September and is termed “a notable descendent lineage” of Omicron subvariant BA.2.86 by the World Health Organization. When BA.2.86, also known as Pirola, was first identified in August, it appeared very different from other variants, the CDC said. That triggered concerns it might be more infectious than previous ones, even for people with immunity from vaccination and previous infections. 

“JN.1 is Pirola’s kid,” said Rajendram Rajnarayanan, PhD, assistant dean of research and associate professor at the New York Institute of Technology at Arkansas State University, who maintains a COVID-19 variant database. The variant BA.2.86 and offspring are worrisome due to the mutations, he said.
 

How Widespread Is JN.1?

As of Nov. 27, the CDC says, BA.2.86 is projected to comprise 5%-15% of circulating variants in the U.S. “The expected public health risk of this variant, including its offshoot JN.1, is low,” the agency said.

Currently, JN.1 is reported more often in Europe, Dr. Rajnarayanan said, but some countries have better reporting data than others. “It has probably spread to every country tracking COVID,’’ he said, due to the mutations in the spike protein that make it easier for it to bind and infect.

Wastewater data suggest the variant’s rise is helping to fuel a wave, Dr. Topol said. 
 

Vaccine Effectiveness Against JN.1, Other New Variants 

The new XBB.1.5 monovalent vaccine, protects against XBB.1.5, another Omicron subvariant, but also JN.1 and other “emergent” viruses, a team of researchers reported Nov. 26 in a study on bioRxiv that has not yet been certified by peer review.

The updated vaccine, when given to uninfected people, boosted antibodies about 27-fold against XBB.1.5 and about 13- to 27-fold against JN.1 and other emergent viruses, the researchers reported.

While even primary doses of the COVID vaccine will likely help protect against the new JN.1 subvariant, “if you got the XBB.1.5 booster, it is going to be protecting you better against this new variant,” Dr. Rajnarayanan said.
 

2023-2024 Vaccine Uptake Low 

In November, the CDC posted the first detailed estimates of who did. As of Nov. 18, less than 16% of U.S. adults had, with nearly 15% saying they planned to get it.

Coverage among children is lower, with just 6.3% of children up to date on the newest vaccine and 19% of parents saying they planned to get the 2023-2024 vaccine for their children.
 

Predictions, Mitigation

While some experts say a peak due to JN.1 is expected in the weeks ahead, Dr. Topol said it’s impossible to predict exactly how JN.1 will play out.

“It’s not going to be a repeat of November 2021,” when Omicron surfaced, Dr. Rajnarayanan predicted. Within 4 weeks of the World Health Organization declaring Omicron as a virus of concern, it spread around the world.

Mitigation measures can help, Dr. Rajnarayanan said. He suggested:

Get the new vaccine, and especially encourage vulnerable family and friends to do so.

If you are gathering inside for holiday festivities, improve circulation in the house, if possible.

Wear masks in airports and on planes and other public transportation.

A version of this article appeared on WebMD.com.