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The antiviral drug Paxlovid appears to reduce the risk of dying from COVID-19 by 79% and decrease hospitalizations by 73% in at-risk patients who are ages 65 and older, according to a new study published in The New England Journal of Medicine.

The pill, which is a combination of the drugs nirmatrelvir and ritonavir, received FDA emergency use authorization in December 2021 to treat mild to moderate disease in ages 12 and older who face high risks for having severe COVID-19, hospitalization, and death.

“The results of the study show unequivocally that treatment with Paxlovid significantly reduces the risk of hospitalization and death from COVID-19,” Doron Netzer, MD, the senior study author and a researcher with Clalit Health Services, Tel Aviv, told The Jerusalem Post.

“We are the country’s leader in the provision of giving Paxlovid to relevant patients,” he said. “It was given to patients all over the country, with medical teams monitoring the patients who took the pills.”

The research is considered one of the most thorough studies published to date about how well Paxlovid works, the news outlet reported. The research team analyzed information from Clalit’s electronic medical records. The health care organization covers about 52% of the Israeli population and almost two-thirds of older adults. More than 30,000 COVID-19 patients in Israel have been treated with the drug so far.

Dr. Netzer and colleagues looked at hospitalization and death data for at-risk COVID-19 patients ages 40 and older between Jan. 9 and March 31, when the original Omicron variant was the dominant strain in Israel. During that time, more than 1.1 million Clalit patients were infected with COVID-19, 109,000 patients were considered at-risk, and 3,900 patients received the drug.

The average age of the patients was 60, and 39% of the patients were 65 and older. Overall, 78% of the patients had previous COVID-19 immunity due to vaccination, prior infection, or both.

Among ages 65 and older, the rate of COVID-19 hospitalization was 14.7 cases per 100,000 person-days among treated patients, compared with 58.9 cases per 100,000 person-days among untreated patients. This represented a 73% lower chance of being hospitalized.

Among ages 40-64, the rate of hospitalization due to COVID-19 was 15.2 cases per 100,000 person-days among treated patients, compared with 15.8 cases per 100,000 person-days among untreated patients. The risk of hospitalization wasn’t significantly lower for this age group.

Among ages 65 and older, there were two deaths from COVID-19 in 2,484 treated patients, compared with 158 in the 40,337 untreated patients. This represented a 79% lower chance of dying from COVID-19.

Among ages 40-64, there was one death from COVID-19 in 1,418 treated patients, compared with 16 in the 65,015 untreated patients. The risk of death wasn’t significantly lower for this age group.

For both age groups, a lack of previous COVID-19 immunity and a previous hospitalization were most strongly linked to high rates of hospitalization during the Omicron wave.

The researchers noted that they didn’t break down the data on ages 40-64 who had cancer and other severe conditions that weaken the immune system. These patients may be more likely to benefit from Paxlovid, they said, though future studies will need to analyze the data.

The study didn’t receive any financial or in-kind support, the authors said.

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

The antiviral drug Paxlovid appears to reduce the risk of dying from COVID-19 by 79% and decrease hospitalizations by 73% in at-risk patients who are ages 65 and older, according to a new study published in The New England Journal of Medicine.

The pill, which is a combination of the drugs nirmatrelvir and ritonavir, received FDA emergency use authorization in December 2021 to treat mild to moderate disease in ages 12 and older who face high risks for having severe COVID-19, hospitalization, and death.

“The results of the study show unequivocally that treatment with Paxlovid significantly reduces the risk of hospitalization and death from COVID-19,” Doron Netzer, MD, the senior study author and a researcher with Clalit Health Services, Tel Aviv, told The Jerusalem Post.

“We are the country’s leader in the provision of giving Paxlovid to relevant patients,” he said. “It was given to patients all over the country, with medical teams monitoring the patients who took the pills.”

The research is considered one of the most thorough studies published to date about how well Paxlovid works, the news outlet reported. The research team analyzed information from Clalit’s electronic medical records. The health care organization covers about 52% of the Israeli population and almost two-thirds of older adults. More than 30,000 COVID-19 patients in Israel have been treated with the drug so far.

Dr. Netzer and colleagues looked at hospitalization and death data for at-risk COVID-19 patients ages 40 and older between Jan. 9 and March 31, when the original Omicron variant was the dominant strain in Israel. During that time, more than 1.1 million Clalit patients were infected with COVID-19, 109,000 patients were considered at-risk, and 3,900 patients received the drug.

The average age of the patients was 60, and 39% of the patients were 65 and older. Overall, 78% of the patients had previous COVID-19 immunity due to vaccination, prior infection, or both.

Among ages 65 and older, the rate of COVID-19 hospitalization was 14.7 cases per 100,000 person-days among treated patients, compared with 58.9 cases per 100,000 person-days among untreated patients. This represented a 73% lower chance of being hospitalized.

Among ages 40-64, the rate of hospitalization due to COVID-19 was 15.2 cases per 100,000 person-days among treated patients, compared with 15.8 cases per 100,000 person-days among untreated patients. The risk of hospitalization wasn’t significantly lower for this age group.

Among ages 65 and older, there were two deaths from COVID-19 in 2,484 treated patients, compared with 158 in the 40,337 untreated patients. This represented a 79% lower chance of dying from COVID-19.

Among ages 40-64, there was one death from COVID-19 in 1,418 treated patients, compared with 16 in the 65,015 untreated patients. The risk of death wasn’t significantly lower for this age group.

For both age groups, a lack of previous COVID-19 immunity and a previous hospitalization were most strongly linked to high rates of hospitalization during the Omicron wave.

The researchers noted that they didn’t break down the data on ages 40-64 who had cancer and other severe conditions that weaken the immune system. These patients may be more likely to benefit from Paxlovid, they said, though future studies will need to analyze the data.

The study didn’t receive any financial or in-kind support, the authors said.

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

The antiviral drug Paxlovid appears to reduce the risk of dying from COVID-19 by 79% and decrease hospitalizations by 73% in at-risk patients who are ages 65 and older, according to a new study published in The New England Journal of Medicine.

The pill, which is a combination of the drugs nirmatrelvir and ritonavir, received FDA emergency use authorization in December 2021 to treat mild to moderate disease in ages 12 and older who face high risks for having severe COVID-19, hospitalization, and death.

“The results of the study show unequivocally that treatment with Paxlovid significantly reduces the risk of hospitalization and death from COVID-19,” Doron Netzer, MD, the senior study author and a researcher with Clalit Health Services, Tel Aviv, told The Jerusalem Post.

“We are the country’s leader in the provision of giving Paxlovid to relevant patients,” he said. “It was given to patients all over the country, with medical teams monitoring the patients who took the pills.”

The research is considered one of the most thorough studies published to date about how well Paxlovid works, the news outlet reported. The research team analyzed information from Clalit’s electronic medical records. The health care organization covers about 52% of the Israeli population and almost two-thirds of older adults. More than 30,000 COVID-19 patients in Israel have been treated with the drug so far.

Dr. Netzer and colleagues looked at hospitalization and death data for at-risk COVID-19 patients ages 40 and older between Jan. 9 and March 31, when the original Omicron variant was the dominant strain in Israel. During that time, more than 1.1 million Clalit patients were infected with COVID-19, 109,000 patients were considered at-risk, and 3,900 patients received the drug.

The average age of the patients was 60, and 39% of the patients were 65 and older. Overall, 78% of the patients had previous COVID-19 immunity due to vaccination, prior infection, or both.

Among ages 65 and older, the rate of COVID-19 hospitalization was 14.7 cases per 100,000 person-days among treated patients, compared with 58.9 cases per 100,000 person-days among untreated patients. This represented a 73% lower chance of being hospitalized.

Among ages 40-64, the rate of hospitalization due to COVID-19 was 15.2 cases per 100,000 person-days among treated patients, compared with 15.8 cases per 100,000 person-days among untreated patients. The risk of hospitalization wasn’t significantly lower for this age group.

Among ages 65 and older, there were two deaths from COVID-19 in 2,484 treated patients, compared with 158 in the 40,337 untreated patients. This represented a 79% lower chance of dying from COVID-19.

Among ages 40-64, there was one death from COVID-19 in 1,418 treated patients, compared with 16 in the 65,015 untreated patients. The risk of death wasn’t significantly lower for this age group.

For both age groups, a lack of previous COVID-19 immunity and a previous hospitalization were most strongly linked to high rates of hospitalization during the Omicron wave.

The researchers noted that they didn’t break down the data on ages 40-64 who had cancer and other severe conditions that weaken the immune system. These patients may be more likely to benefit from Paxlovid, they said, though future studies will need to analyze the data.

The study didn’t receive any financial or in-kind support, the authors said.

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

When Jaime Seltzer first heard about a new virus that was spreading globally early in 2020, she was on full alert. As an advocate for the post-viral condition known as myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), she worried about a new wave of people having long-term disabilities.

“The hair on my arms stood on end,” said Ms. Seltzer, director of scientific and medical outreach at the advocacy group MEAction and a consultant researcher at Stanford University.

If the percentage of people with COVID-19 who go on to have long-term symptoms “similar to what has been seen for other pathogens, then we’re looking at a mass disabling event,” Ms. Seltzer, who has had ME/CFS herself, said she wondered.

Sure enough, later in 2020, reports began emerging about people with extreme fatigue, postexertion crashes, brain fog, unrefreshing sleep, and dizziness when standing up months after a bout with the then-new viral illness. Those same symptoms had been designated as “core criteria” of ME/CFS by the National Academy of Medicine in a 2015 report.

Now, advocates like Ms. Seltzer are hoping the research and medical communities will give ME/CFS and other postviral illnesses the same attention they have increasingly focused on long COVID.

The emergence of long COVID was no surprise to researchers who study ME/CFS, because the same set of symptoms has arisen after many other viruses.

“This for all the world looks like ME/CFS. We think they are frighteningly similar, if not identical,” said David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital in Boston, who studies people with both diagnoses.

The actual numbers are hard to determine, since many people who meet ME/CFS criteria aren’t formally diagnosed. But a combined analysis of data from several studies published in March found that about one in three people had fatigue and about one in five reported having a hard time with thinking and memory 12 or more weeks after they had COVID-19.

According to some estimates, about half of people with long COVID will meet the criteria for ME/CFS, whether they’re given that specific diagnosis or not.

Other conditions that often exist with ME/CFS are also being seen in people with long COVID, including postural orthostatic tachycardia syndrome, which causes people to feel dizzy when they stand, along with other symptoms; other problems with the autonomic nervous system, which controls body systems such as heart rate, blood pressure, and digestion, known together as dysautonomia; and a condition related to allergies called mast cell activation disorder.

Post–acute infection syndromes have been linked to a long list of viruses, including Ebola, the 2003-2004 SARS virus, and Epstein-Barr – the virus most commonly associated with ME/CFS.

The problem in clinical medicine is that once an infection has cleared, the teaching has been that the person should no longer feel sick, said Nancy G. Klimas, MD, director of the Institute for Neuro-Immune Medicine at Nova Southeastern University in Miami. “I was taught that there has to be an antigen [such as a viral protein] in the system to drive the immune system to make it create sickness, and the immune system should shut off when it’s done,” she said.

Thus, if virus is gone and other routine lab tests come up negative, doctors often deem the person’s reported symptoms to be psychological, which can upset patients, Anthony Komaroff, MD, of Brigham and Women’s Hospital in Boston, wrote in July 2021.

Only recently have doctors started to appreciate the idea that the immune system may be overreacting long term, Dr. Klimas said.

Now, long COVID appears to be speeding up that recognition. Dr. Systrom said he has “absolutely” seen a change in attitude among fellow doctors who had been skeptical of ME/CFS as a “real” illness because there’s no test for it.

“I’m very keenly aware of a large group of health care professionals who really had not bought into the concept of ME/CFS as a real disease who have had an epiphany of sorts with long COVID and now, in a backwards way, have applied that same thinking to their very same patients with ME/CFS,” he said.
 

Science showing ‘frighteningly similar’ symptoms

Dr. Systrom has spent several years researching how ME/CFS patients cannot tolerate exercise and now is doing similar studies in people with long COVID. “Several months into the pandemic, we began receiving reports of patients who had survived COVID and maybe even had a relatively mild disease ... and as the summer of 2020 moved into the fall, it became apparent that there was a subset of patients who for all the world appeared to meet ME/CFS clinical criteria,” he said.

Using bicycle exercise tests on long COVID patients with catheters placed in their veins, Dr. Systrom and associates have shown a lack of exercise capacity that isn’t caused by heart or lung disease but instead is related to abnormal nerves and blood vessels, just as they’d shown previously in ME/CFS patient.

Avindra Nath, MD, senior investigator and clinical director of intramural research at the National Institute of Neurological Disorders and Stroke, Bethesda, Md., was doing a deep-dive scientific study on ME/CFS when the COVID-19 pandemic hit. Since then, he›s begun another study using the same protocol and sophisticated laboratory measurement to evaluate people with long COVID.

“As terrible as [long COVID] is, it’s kind of a blessing in disguise for ME/CFS because there’s just so much overlap between the two and they could very well be in many ways one in the same thing. The problem with studying ME/CFS is oftentimes you didn’t know what the trigger was. You see patients many years later, then try to backtrack and find out what happened,” said Dr. Nath, a neuroimmunologist.

With long COVID, on the other hand, “we know when they got infected and when their symptoms actually started, so it becomes much more uniform. ... It gives us an opportunity to maybe solve certain things in a much more well-defined population and try to find answers.”

Advocacy groups want to see more.

In February 2021, Solve M.E. launched the Long COVID Alliance, made up of several organizations, companies, and people with a goal to influence policy and speed up research into a range of postviral illnesses.

Solve M.E. has also pushed for inclusion of language regarding ME/CFS and related conditions into congressional bills addressing long COVID, including those that call for funding of research and clinical care.

“On the political front, we’ve really capitalized on a moment in time in which we have the spotlight,” said Emily Taylor, vice president of advocacy and engagement for Solve M.E.

“One of the hardest parts about ME/CFS is how to show that it’s real when it’s invisible. Most people agree that COVID is real and therefore if somebody gets ME/CFS after COVID, it’s real,” she said.

The advocacy groups are now pushing for non-COVID postinfection illnesses to be included in efforts aimed at helping people with long COVID, with mixed results. For example, the RECOVER Initiative, established in February 2021 with $1.5 billion in funding from Congress to the National Institutes of Health, is specifically for studying long COVID and does not fund research into other postinfection illnesses, although representatives from the ME/CFS community are advisers.

Language addressing ME/CFS and other postinfectious chronic illnesses has been included in several long COVID bills now pending in Congress, including the Care for Long COVID Act in the Senate and its companion COVID-19 Long Haulers Act in the House. “Our goal is to push for passage of a long COVID bill by the end of the year,” Ms. Taylor said.

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

When Jaime Seltzer first heard about a new virus that was spreading globally early in 2020, she was on full alert. As an advocate for the post-viral condition known as myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), she worried about a new wave of people having long-term disabilities.

“The hair on my arms stood on end,” said Ms. Seltzer, director of scientific and medical outreach at the advocacy group MEAction and a consultant researcher at Stanford University.

If the percentage of people with COVID-19 who go on to have long-term symptoms “similar to what has been seen for other pathogens, then we’re looking at a mass disabling event,” Ms. Seltzer, who has had ME/CFS herself, said she wondered.

Sure enough, later in 2020, reports began emerging about people with extreme fatigue, postexertion crashes, brain fog, unrefreshing sleep, and dizziness when standing up months after a bout with the then-new viral illness. Those same symptoms had been designated as “core criteria” of ME/CFS by the National Academy of Medicine in a 2015 report.

Now, advocates like Ms. Seltzer are hoping the research and medical communities will give ME/CFS and other postviral illnesses the same attention they have increasingly focused on long COVID.

The emergence of long COVID was no surprise to researchers who study ME/CFS, because the same set of symptoms has arisen after many other viruses.

“This for all the world looks like ME/CFS. We think they are frighteningly similar, if not identical,” said David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital in Boston, who studies people with both diagnoses.

The actual numbers are hard to determine, since many people who meet ME/CFS criteria aren’t formally diagnosed. But a combined analysis of data from several studies published in March found that about one in three people had fatigue and about one in five reported having a hard time with thinking and memory 12 or more weeks after they had COVID-19.

According to some estimates, about half of people with long COVID will meet the criteria for ME/CFS, whether they’re given that specific diagnosis or not.

Other conditions that often exist with ME/CFS are also being seen in people with long COVID, including postural orthostatic tachycardia syndrome, which causes people to feel dizzy when they stand, along with other symptoms; other problems with the autonomic nervous system, which controls body systems such as heart rate, blood pressure, and digestion, known together as dysautonomia; and a condition related to allergies called mast cell activation disorder.

Post–acute infection syndromes have been linked to a long list of viruses, including Ebola, the 2003-2004 SARS virus, and Epstein-Barr – the virus most commonly associated with ME/CFS.

The problem in clinical medicine is that once an infection has cleared, the teaching has been that the person should no longer feel sick, said Nancy G. Klimas, MD, director of the Institute for Neuro-Immune Medicine at Nova Southeastern University in Miami. “I was taught that there has to be an antigen [such as a viral protein] in the system to drive the immune system to make it create sickness, and the immune system should shut off when it’s done,” she said.

Thus, if virus is gone and other routine lab tests come up negative, doctors often deem the person’s reported symptoms to be psychological, which can upset patients, Anthony Komaroff, MD, of Brigham and Women’s Hospital in Boston, wrote in July 2021.

Only recently have doctors started to appreciate the idea that the immune system may be overreacting long term, Dr. Klimas said.

Now, long COVID appears to be speeding up that recognition. Dr. Systrom said he has “absolutely” seen a change in attitude among fellow doctors who had been skeptical of ME/CFS as a “real” illness because there’s no test for it.

“I’m very keenly aware of a large group of health care professionals who really had not bought into the concept of ME/CFS as a real disease who have had an epiphany of sorts with long COVID and now, in a backwards way, have applied that same thinking to their very same patients with ME/CFS,” he said.
 

Science showing ‘frighteningly similar’ symptoms

Dr. Systrom has spent several years researching how ME/CFS patients cannot tolerate exercise and now is doing similar studies in people with long COVID. “Several months into the pandemic, we began receiving reports of patients who had survived COVID and maybe even had a relatively mild disease ... and as the summer of 2020 moved into the fall, it became apparent that there was a subset of patients who for all the world appeared to meet ME/CFS clinical criteria,” he said.

Using bicycle exercise tests on long COVID patients with catheters placed in their veins, Dr. Systrom and associates have shown a lack of exercise capacity that isn’t caused by heart or lung disease but instead is related to abnormal nerves and blood vessels, just as they’d shown previously in ME/CFS patient.

Avindra Nath, MD, senior investigator and clinical director of intramural research at the National Institute of Neurological Disorders and Stroke, Bethesda, Md., was doing a deep-dive scientific study on ME/CFS when the COVID-19 pandemic hit. Since then, he›s begun another study using the same protocol and sophisticated laboratory measurement to evaluate people with long COVID.

“As terrible as [long COVID] is, it’s kind of a blessing in disguise for ME/CFS because there’s just so much overlap between the two and they could very well be in many ways one in the same thing. The problem with studying ME/CFS is oftentimes you didn’t know what the trigger was. You see patients many years later, then try to backtrack and find out what happened,” said Dr. Nath, a neuroimmunologist.

With long COVID, on the other hand, “we know when they got infected and when their symptoms actually started, so it becomes much more uniform. ... It gives us an opportunity to maybe solve certain things in a much more well-defined population and try to find answers.”

Advocacy groups want to see more.

In February 2021, Solve M.E. launched the Long COVID Alliance, made up of several organizations, companies, and people with a goal to influence policy and speed up research into a range of postviral illnesses.

Solve M.E. has also pushed for inclusion of language regarding ME/CFS and related conditions into congressional bills addressing long COVID, including those that call for funding of research and clinical care.

“On the political front, we’ve really capitalized on a moment in time in which we have the spotlight,” said Emily Taylor, vice president of advocacy and engagement for Solve M.E.

“One of the hardest parts about ME/CFS is how to show that it’s real when it’s invisible. Most people agree that COVID is real and therefore if somebody gets ME/CFS after COVID, it’s real,” she said.

The advocacy groups are now pushing for non-COVID postinfection illnesses to be included in efforts aimed at helping people with long COVID, with mixed results. For example, the RECOVER Initiative, established in February 2021 with $1.5 billion in funding from Congress to the National Institutes of Health, is specifically for studying long COVID and does not fund research into other postinfection illnesses, although representatives from the ME/CFS community are advisers.

Language addressing ME/CFS and other postinfectious chronic illnesses has been included in several long COVID bills now pending in Congress, including the Care for Long COVID Act in the Senate and its companion COVID-19 Long Haulers Act in the House. “Our goal is to push for passage of a long COVID bill by the end of the year,” Ms. Taylor said.

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

When Jaime Seltzer first heard about a new virus that was spreading globally early in 2020, she was on full alert. As an advocate for the post-viral condition known as myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), she worried about a new wave of people having long-term disabilities.

“The hair on my arms stood on end,” said Ms. Seltzer, director of scientific and medical outreach at the advocacy group MEAction and a consultant researcher at Stanford University.

If the percentage of people with COVID-19 who go on to have long-term symptoms “similar to what has been seen for other pathogens, then we’re looking at a mass disabling event,” Ms. Seltzer, who has had ME/CFS herself, said she wondered.

Sure enough, later in 2020, reports began emerging about people with extreme fatigue, postexertion crashes, brain fog, unrefreshing sleep, and dizziness when standing up months after a bout with the then-new viral illness. Those same symptoms had been designated as “core criteria” of ME/CFS by the National Academy of Medicine in a 2015 report.

Now, advocates like Ms. Seltzer are hoping the research and medical communities will give ME/CFS and other postviral illnesses the same attention they have increasingly focused on long COVID.

The emergence of long COVID was no surprise to researchers who study ME/CFS, because the same set of symptoms has arisen after many other viruses.

“This for all the world looks like ME/CFS. We think they are frighteningly similar, if not identical,” said David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital in Boston, who studies people with both diagnoses.

The actual numbers are hard to determine, since many people who meet ME/CFS criteria aren’t formally diagnosed. But a combined analysis of data from several studies published in March found that about one in three people had fatigue and about one in five reported having a hard time with thinking and memory 12 or more weeks after they had COVID-19.

According to some estimates, about half of people with long COVID will meet the criteria for ME/CFS, whether they’re given that specific diagnosis or not.

Other conditions that often exist with ME/CFS are also being seen in people with long COVID, including postural orthostatic tachycardia syndrome, which causes people to feel dizzy when they stand, along with other symptoms; other problems with the autonomic nervous system, which controls body systems such as heart rate, blood pressure, and digestion, known together as dysautonomia; and a condition related to allergies called mast cell activation disorder.

Post–acute infection syndromes have been linked to a long list of viruses, including Ebola, the 2003-2004 SARS virus, and Epstein-Barr – the virus most commonly associated with ME/CFS.

The problem in clinical medicine is that once an infection has cleared, the teaching has been that the person should no longer feel sick, said Nancy G. Klimas, MD, director of the Institute for Neuro-Immune Medicine at Nova Southeastern University in Miami. “I was taught that there has to be an antigen [such as a viral protein] in the system to drive the immune system to make it create sickness, and the immune system should shut off when it’s done,” she said.

Thus, if virus is gone and other routine lab tests come up negative, doctors often deem the person’s reported symptoms to be psychological, which can upset patients, Anthony Komaroff, MD, of Brigham and Women’s Hospital in Boston, wrote in July 2021.

Only recently have doctors started to appreciate the idea that the immune system may be overreacting long term, Dr. Klimas said.

Now, long COVID appears to be speeding up that recognition. Dr. Systrom said he has “absolutely” seen a change in attitude among fellow doctors who had been skeptical of ME/CFS as a “real” illness because there’s no test for it.

“I’m very keenly aware of a large group of health care professionals who really had not bought into the concept of ME/CFS as a real disease who have had an epiphany of sorts with long COVID and now, in a backwards way, have applied that same thinking to their very same patients with ME/CFS,” he said.
 

Science showing ‘frighteningly similar’ symptoms

Dr. Systrom has spent several years researching how ME/CFS patients cannot tolerate exercise and now is doing similar studies in people with long COVID. “Several months into the pandemic, we began receiving reports of patients who had survived COVID and maybe even had a relatively mild disease ... and as the summer of 2020 moved into the fall, it became apparent that there was a subset of patients who for all the world appeared to meet ME/CFS clinical criteria,” he said.

Using bicycle exercise tests on long COVID patients with catheters placed in their veins, Dr. Systrom and associates have shown a lack of exercise capacity that isn’t caused by heart or lung disease but instead is related to abnormal nerves and blood vessels, just as they’d shown previously in ME/CFS patient.

Avindra Nath, MD, senior investigator and clinical director of intramural research at the National Institute of Neurological Disorders and Stroke, Bethesda, Md., was doing a deep-dive scientific study on ME/CFS when the COVID-19 pandemic hit. Since then, he›s begun another study using the same protocol and sophisticated laboratory measurement to evaluate people with long COVID.

“As terrible as [long COVID] is, it’s kind of a blessing in disguise for ME/CFS because there’s just so much overlap between the two and they could very well be in many ways one in the same thing. The problem with studying ME/CFS is oftentimes you didn’t know what the trigger was. You see patients many years later, then try to backtrack and find out what happened,” said Dr. Nath, a neuroimmunologist.

With long COVID, on the other hand, “we know when they got infected and when their symptoms actually started, so it becomes much more uniform. ... It gives us an opportunity to maybe solve certain things in a much more well-defined population and try to find answers.”

Advocacy groups want to see more.

In February 2021, Solve M.E. launched the Long COVID Alliance, made up of several organizations, companies, and people with a goal to influence policy and speed up research into a range of postviral illnesses.

Solve M.E. has also pushed for inclusion of language regarding ME/CFS and related conditions into congressional bills addressing long COVID, including those that call for funding of research and clinical care.

“On the political front, we’ve really capitalized on a moment in time in which we have the spotlight,” said Emily Taylor, vice president of advocacy and engagement for Solve M.E.

“One of the hardest parts about ME/CFS is how to show that it’s real when it’s invisible. Most people agree that COVID is real and therefore if somebody gets ME/CFS after COVID, it’s real,” she said.

The advocacy groups are now pushing for non-COVID postinfection illnesses to be included in efforts aimed at helping people with long COVID, with mixed results. For example, the RECOVER Initiative, established in February 2021 with $1.5 billion in funding from Congress to the National Institutes of Health, is specifically for studying long COVID and does not fund research into other postinfection illnesses, although representatives from the ME/CFS community are advisers.

Language addressing ME/CFS and other postinfectious chronic illnesses has been included in several long COVID bills now pending in Congress, including the Care for Long COVID Act in the Senate and its companion COVID-19 Long Haulers Act in the House. “Our goal is to push for passage of a long COVID bill by the end of the year,” Ms. Taylor said.

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

It’s back to school time, and some may be wondering what the current availability of vaccines may mean and the effects of the ever-changing COVID-19 guidelines on their children’s education and day-to-day experiences as students this year.

Unlike last school year, there are now vaccines available for all over the age of 6 months, and home rapid antigen tests are more readily available. Additionally, many have now been exposed either by infection or vaccination to the virus.

The CDC has removed the recommendations for maintaining cohorts in the K-12 population. This changing landscape along with differing levels of personal risk make it challenging to counsel families about what to expect in terms of COVID this year.

The best defense that we currently have against COVID is the vaccine. Although it seems that many are susceptible to the virus despite the vaccine, those who have been vaccinated are less susceptible to serious disease, including young children.

As older children may be heading to college, it is important

to encourage them to isolate when they have symptoms, even when they test negative for COVID as we would all like to avoid being sick in general.

Additionally, they should pay attention to the COVID risk level in their area and wear masks, particularly when indoors, as the levels increase. College students should have a plan for where they can isolate when not feeling well. If anyone does test positive for COVID, they should follow the most recent quarantine guidelines, including wearing a well fitted mask when they do begin returning to activities.
 

Monkeypox

We now have a new health concern for this school year.

Monkeypox has come onto the scene with information changing as rapidly as information previously did for COVID. With this virus, we must particularly counsel those heading away to college to be careful to limit their exposure to this disease.

Dormitories and other congregate settings are high-risk locations for the spread of monkeypox. Particularly, students headed to stay in dormitories should be counseled about avoiding:

• sexual activity with those with lesions consistent with monkeypox;
• sharing eating and drinking utensils; and
• sleeping in the same bed as or sharing bedding or towels with anyone with a diagnosis of or lesions consistent with monkeypox.

Additionally, as with prevention of all infections, it is important to frequently wash hands or use alcohol-based sanitizer before eating, and avoid touching the face after using the restroom.

Guidance for those eligible for vaccines against monkeypox seems to be quickly changing as well.

At the time of this article, CDC guidance recommends the vaccine against monkeypox for:

• those considered to be at high risk for it, including those identified by public health officials as a contact of someone with monkeypox;
• those who are aware that a sexual partner had a diagnosis of monkeypox within the past 2 weeks;
• those with multiple sex partners in the past 2 weeks in an area with known monkeypox; and
• those whose jobs may expose them to monkeypox.

Currently, the CDC recommends the vaccine JYNNEOS, a two-dose vaccine that reaches maximum protection after fourteen days. Ultimately, guidance is likely to continue to quickly change for both COVID-19 and Monkeypox throughout the fall. It is possible that new vaccinations will become available, and families and physicians alike will have many questions.

Primary care offices should ensure that someone is keeping up to date with the latest guidance to share with the office so that physicians may share accurate information with their patients.

Families should be counseled that we anticipate information about monkeypox, particularly related to vaccinations, to continue to change, as it has during all stages of the COVID pandemic.

As always, patients should be reminded to continue regular routine vaccinations, including the annual influenza vaccine.

Dr. Wheat is a family physician at Erie Family Health Center and program director of Northwestern University’s McGaw Family Medicine residency program, both in Chicago. Dr. Wheat serves on the editorial advisory board of Family Practice News. You can contact her at [email protected].

It’s back to school time, and some may be wondering what the current availability of vaccines may mean and the effects of the ever-changing COVID-19 guidelines on their children’s education and day-to-day experiences as students this year.

Unlike last school year, there are now vaccines available for all over the age of 6 months, and home rapid antigen tests are more readily available. Additionally, many have now been exposed either by infection or vaccination to the virus.

The CDC has removed the recommendations for maintaining cohorts in the K-12 population. This changing landscape along with differing levels of personal risk make it challenging to counsel families about what to expect in terms of COVID this year.

The best defense that we currently have against COVID is the vaccine. Although it seems that many are susceptible to the virus despite the vaccine, those who have been vaccinated are less susceptible to serious disease, including young children.

As older children may be heading to college, it is important

to encourage them to isolate when they have symptoms, even when they test negative for COVID as we would all like to avoid being sick in general.

Additionally, they should pay attention to the COVID risk level in their area and wear masks, particularly when indoors, as the levels increase. College students should have a plan for where they can isolate when not feeling well. If anyone does test positive for COVID, they should follow the most recent quarantine guidelines, including wearing a well fitted mask when they do begin returning to activities.
 

Monkeypox

We now have a new health concern for this school year.

Monkeypox has come onto the scene with information changing as rapidly as information previously did for COVID. With this virus, we must particularly counsel those heading away to college to be careful to limit their exposure to this disease.

Dormitories and other congregate settings are high-risk locations for the spread of monkeypox. Particularly, students headed to stay in dormitories should be counseled about avoiding:

• sexual activity with those with lesions consistent with monkeypox;
• sharing eating and drinking utensils; and
• sleeping in the same bed as or sharing bedding or towels with anyone with a diagnosis of or lesions consistent with monkeypox.

Additionally, as with prevention of all infections, it is important to frequently wash hands or use alcohol-based sanitizer before eating, and avoid touching the face after using the restroom.

Guidance for those eligible for vaccines against monkeypox seems to be quickly changing as well.

At the time of this article, CDC guidance recommends the vaccine against monkeypox for:

• those considered to be at high risk for it, including those identified by public health officials as a contact of someone with monkeypox;
• those who are aware that a sexual partner had a diagnosis of monkeypox within the past 2 weeks;
• those with multiple sex partners in the past 2 weeks in an area with known monkeypox; and
• those whose jobs may expose them to monkeypox.

Currently, the CDC recommends the vaccine JYNNEOS, a two-dose vaccine that reaches maximum protection after fourteen days. Ultimately, guidance is likely to continue to quickly change for both COVID-19 and Monkeypox throughout the fall. It is possible that new vaccinations will become available, and families and physicians alike will have many questions.

Primary care offices should ensure that someone is keeping up to date with the latest guidance to share with the office so that physicians may share accurate information with their patients.

Families should be counseled that we anticipate information about monkeypox, particularly related to vaccinations, to continue to change, as it has during all stages of the COVID pandemic.

As always, patients should be reminded to continue regular routine vaccinations, including the annual influenza vaccine.

Dr. Wheat is a family physician at Erie Family Health Center and program director of Northwestern University’s McGaw Family Medicine residency program, both in Chicago. Dr. Wheat serves on the editorial advisory board of Family Practice News. You can contact her at [email protected].

It’s back to school time, and some may be wondering what the current availability of vaccines may mean and the effects of the ever-changing COVID-19 guidelines on their children’s education and day-to-day experiences as students this year.

Unlike last school year, there are now vaccines available for all over the age of 6 months, and home rapid antigen tests are more readily available. Additionally, many have now been exposed either by infection or vaccination to the virus.

The CDC has removed the recommendations for maintaining cohorts in the K-12 population. This changing landscape along with differing levels of personal risk make it challenging to counsel families about what to expect in terms of COVID this year.

The best defense that we currently have against COVID is the vaccine. Although it seems that many are susceptible to the virus despite the vaccine, those who have been vaccinated are less susceptible to serious disease, including young children.

As older children may be heading to college, it is important

to encourage them to isolate when they have symptoms, even when they test negative for COVID as we would all like to avoid being sick in general.

Additionally, they should pay attention to the COVID risk level in their area and wear masks, particularly when indoors, as the levels increase. College students should have a plan for where they can isolate when not feeling well. If anyone does test positive for COVID, they should follow the most recent quarantine guidelines, including wearing a well fitted mask when they do begin returning to activities.
 

Monkeypox

We now have a new health concern for this school year.

Monkeypox has come onto the scene with information changing as rapidly as information previously did for COVID. With this virus, we must particularly counsel those heading away to college to be careful to limit their exposure to this disease.

Dormitories and other congregate settings are high-risk locations for the spread of monkeypox. Particularly, students headed to stay in dormitories should be counseled about avoiding:

• sexual activity with those with lesions consistent with monkeypox;
• sharing eating and drinking utensils; and
• sleeping in the same bed as or sharing bedding or towels with anyone with a diagnosis of or lesions consistent with monkeypox.

Additionally, as with prevention of all infections, it is important to frequently wash hands or use alcohol-based sanitizer before eating, and avoid touching the face after using the restroom.

Guidance for those eligible for vaccines against monkeypox seems to be quickly changing as well.

At the time of this article, CDC guidance recommends the vaccine against monkeypox for:

• those considered to be at high risk for it, including those identified by public health officials as a contact of someone with monkeypox;
• those who are aware that a sexual partner had a diagnosis of monkeypox within the past 2 weeks;
• those with multiple sex partners in the past 2 weeks in an area with known monkeypox; and
• those whose jobs may expose them to monkeypox.

Currently, the CDC recommends the vaccine JYNNEOS, a two-dose vaccine that reaches maximum protection after fourteen days. Ultimately, guidance is likely to continue to quickly change for both COVID-19 and Monkeypox throughout the fall. It is possible that new vaccinations will become available, and families and physicians alike will have many questions.

Primary care offices should ensure that someone is keeping up to date with the latest guidance to share with the office so that physicians may share accurate information with their patients.

Families should be counseled that we anticipate information about monkeypox, particularly related to vaccinations, to continue to change, as it has during all stages of the COVID pandemic.

As always, patients should be reminded to continue regular routine vaccinations, including the annual influenza vaccine.

Dr. Wheat is a family physician at Erie Family Health Center and program director of Northwestern University’s McGaw Family Medicine residency program, both in Chicago. Dr. Wheat serves on the editorial advisory board of Family Practice News. You can contact her at [email protected].

Neither metformin, ivermectin, or fluvoxamine had any impact on reducing disease severity, hospitalization, or death from COVID-19, according to results from more than 1,000 overweight or obese adult patients in the COVID-OUT randomized trial.

However, metformin showed some potential in a secondary analysis.

Early treatment to prevent severe disease remains a goal in managing the ongoing COVID-19 pandemic, and biophysical modeling suggested that metformin, ivermectin, and fluvoxamine may serve as antivirals to help reduce severe disease in COVID-19 patients, Carolyn T. Bramante, MD, of the University of Minnesota, Minneapolis, and colleagues wrote.

Thinglass/iStock Editorial/Getty Images

“We started enrolling patients at the end of December 2020,” Dr. Bramante said in an interview. “At that time, even though vaccine data were coming out, we thought it was important to test early outpatient treatment with widely available safe medications with no interactions, because the virus would evolve and vaccine availability may be limited.”

In a study published in the New England Journal of Medicine, the researchers used a two-by-three factorial design to test the ability of metformin, ivermectin, and fluvoxamine to prevent severe COVID-19 infection in nonhospitalized adults aged 30-85 years. A total of 1,431 patients at six U.S. sites were enrolled within 3 days of a confirmed infection and less than 7 days after the start of symptoms, then randomized to one of six groups: metformin plus fluvoxamine; metformin plus ivermectin; metformin plus placebo; placebo plus fluvoxamine; placebo plus ivermectin; and placebo plus placebo.

A total of 1,323 patients were included in the primary analysis. The median age of the patients was 46 years, 56% were female (of whom 6% were pregnant), and all individuals met criteria for overweight or obesity. About half (52%) of the patients had been vaccinated against COVID-19.

The primary endpoint was a composite of hypoxemia, ED visit, hospitalization, or death. The analyses were adjusted for COVID-19 vaccination and other trial medications. Overall, the adjusted odds ratios of any primary event, compared with placebo, was 0.84 for metformin (P = .19), 1.05 for ivermectin (P = .78), and 0.94 for fluvoxamine (P = .75).

The researchers also conducted a prespecified secondary analysis of components of the primary endpoint. In this analysis, the aORs for an ED visit, hospitalization, or death was 0.58 for metformin, 1.39 for ivermectin, and 1.17 for fluvoxamine. The aORs for hospitalization or death were 0.47, 0.73, and 1.11 for metformin, ivermectin, and fluvoxamine, respectively. No medication-related serious adverse events were reported with any of the drugs during the study period.

The possible benefit for prevention of severe COVID-19 with metformin was a prespecified secondary endpoint, and therefore not definitive until more research has been completed, the researchers said. Metformin has demonstrated anti-inflammatory actions in previous studies, and has shown protective effects against COVID-19 lung injury in animal studies.

Previous observational studies also have shown an association between metformin use and less severe COVID-19 in patients already taking metformin. “The proposed mechanisms of action against COVID-19 for metformin include anti-inflammatory and antiviral activity and the prevention of hyperglycemia during acute illness,” they added.

The study findings were limited by several factors including the population age range and focus on overweight and obese patients, which may limit generalizability, the researchers noted. Other limitations include the disproportionately small percentage of Black and Latino patients and the potential lack of accuracy in identifying hypoxemia via home oxygen monitors.

However, the results demonstrate that none of the three repurposed drugs – metformin, ivermectin, and fluvoxamine – prevented primary events or reduced symptom severity in COVID-19, compared with placebos, the researchers concluded.

“Metformin had several streams of evidence supporting its use: in vitro, in silico [computer modeled], observational, and in tissue. We were not surprised to see that it reduced emergency department visits, hospitalization, and death,” Dr. Bramante said in an interview.

The take-home message for clinicians is to continue to look to guideline committees for direction on COVID-19 treatments, but to continue to consider metformin along with other treatments, she said.

“All research should be replicated, whether the primary outcome is positive or negative,” Dr. Bramante emphasized. “In this case, when our positive outcome was negative and secondary outcome was positive, a confirmatory trial for metformin is particularly important.”

Ineffective drugs are inefficient use of resources

“The results of the COVID-OUT trial provide persuasive additional data that increase the confidence and degree of certainty that fluvoxamine and ivermectin are not effective in preventing progression to severe disease,” wrote Salim S. Abdool Karim, MB, and Nikita Devnarain, PhD, of the Centre for the AIDS Programme of Research in South Africa, Durban, in an accompanying editorial.

At the start of the study, in 2020, data on the use of the three drugs to prevent severe COVID-19 were “either unavailable or equivocal,” they said. Since then, accumulating data support the current study findings of the nonefficacy of ivermectin and fluvoxamine, and the World Health Organization has advised against their use for COVID-19, although the WHO has not provided guidance for the use of metformin.

The authors called on clinicians to stop using ivermectin and fluvoxamine to treat COVID-19 patients.

“With respect to clinical decisions about COVID-19 treatment, some drug choices, especially those that have negative [World Health Organization] recommendations, are clearly wrong,” they wrote. “In keeping with evidence-based medical practice, patients with COVID-19 must be treated with efficacious medications; they deserve nothing less.”

The study was supported by the Parsemus Foundation, Rainwater Charitable Foundation, Fast Grants, and UnitedHealth Group Foundation. The fluvoxamine placebo tablets were donated by Apotex Pharmaceuticals. The ivermectin placebo and active tablets were donated by Edenbridge Pharmaceuticals. Lead author Dr. Bramante was supported the National Center for Advancing Translational Sciences and the National Institute of Diabetes and Digestive and Kidney Diseases. The researchers had no financial conflicts to disclose. Dr. Abdool Karim serves as a member of the World Health Organization Science Council. Dr. Devnarain had no financial conflicts to disclose.
 

Neither metformin, ivermectin, or fluvoxamine had any impact on reducing disease severity, hospitalization, or death from COVID-19, according to results from more than 1,000 overweight or obese adult patients in the COVID-OUT randomized trial.

However, metformin showed some potential in a secondary analysis.

Early treatment to prevent severe disease remains a goal in managing the ongoing COVID-19 pandemic, and biophysical modeling suggested that metformin, ivermectin, and fluvoxamine may serve as antivirals to help reduce severe disease in COVID-19 patients, Carolyn T. Bramante, MD, of the University of Minnesota, Minneapolis, and colleagues wrote.

Thinglass/iStock Editorial/Getty Images

“We started enrolling patients at the end of December 2020,” Dr. Bramante said in an interview. “At that time, even though vaccine data were coming out, we thought it was important to test early outpatient treatment with widely available safe medications with no interactions, because the virus would evolve and vaccine availability may be limited.”

In a study published in the New England Journal of Medicine, the researchers used a two-by-three factorial design to test the ability of metformin, ivermectin, and fluvoxamine to prevent severe COVID-19 infection in nonhospitalized adults aged 30-85 years. A total of 1,431 patients at six U.S. sites were enrolled within 3 days of a confirmed infection and less than 7 days after the start of symptoms, then randomized to one of six groups: metformin plus fluvoxamine; metformin plus ivermectin; metformin plus placebo; placebo plus fluvoxamine; placebo plus ivermectin; and placebo plus placebo.

A total of 1,323 patients were included in the primary analysis. The median age of the patients was 46 years, 56% were female (of whom 6% were pregnant), and all individuals met criteria for overweight or obesity. About half (52%) of the patients had been vaccinated against COVID-19.

The primary endpoint was a composite of hypoxemia, ED visit, hospitalization, or death. The analyses were adjusted for COVID-19 vaccination and other trial medications. Overall, the adjusted odds ratios of any primary event, compared with placebo, was 0.84 for metformin (P = .19), 1.05 for ivermectin (P = .78), and 0.94 for fluvoxamine (P = .75).

The researchers also conducted a prespecified secondary analysis of components of the primary endpoint. In this analysis, the aORs for an ED visit, hospitalization, or death was 0.58 for metformin, 1.39 for ivermectin, and 1.17 for fluvoxamine. The aORs for hospitalization or death were 0.47, 0.73, and 1.11 for metformin, ivermectin, and fluvoxamine, respectively. No medication-related serious adverse events were reported with any of the drugs during the study period.

The possible benefit for prevention of severe COVID-19 with metformin was a prespecified secondary endpoint, and therefore not definitive until more research has been completed, the researchers said. Metformin has demonstrated anti-inflammatory actions in previous studies, and has shown protective effects against COVID-19 lung injury in animal studies.

Previous observational studies also have shown an association between metformin use and less severe COVID-19 in patients already taking metformin. “The proposed mechanisms of action against COVID-19 for metformin include anti-inflammatory and antiviral activity and the prevention of hyperglycemia during acute illness,” they added.

The study findings were limited by several factors including the population age range and focus on overweight and obese patients, which may limit generalizability, the researchers noted. Other limitations include the disproportionately small percentage of Black and Latino patients and the potential lack of accuracy in identifying hypoxemia via home oxygen monitors.

However, the results demonstrate that none of the three repurposed drugs – metformin, ivermectin, and fluvoxamine – prevented primary events or reduced symptom severity in COVID-19, compared with placebos, the researchers concluded.

“Metformin had several streams of evidence supporting its use: in vitro, in silico [computer modeled], observational, and in tissue. We were not surprised to see that it reduced emergency department visits, hospitalization, and death,” Dr. Bramante said in an interview.

The take-home message for clinicians is to continue to look to guideline committees for direction on COVID-19 treatments, but to continue to consider metformin along with other treatments, she said.

“All research should be replicated, whether the primary outcome is positive or negative,” Dr. Bramante emphasized. “In this case, when our positive outcome was negative and secondary outcome was positive, a confirmatory trial for metformin is particularly important.”

Ineffective drugs are inefficient use of resources

“The results of the COVID-OUT trial provide persuasive additional data that increase the confidence and degree of certainty that fluvoxamine and ivermectin are not effective in preventing progression to severe disease,” wrote Salim S. Abdool Karim, MB, and Nikita Devnarain, PhD, of the Centre for the AIDS Programme of Research in South Africa, Durban, in an accompanying editorial.

At the start of the study, in 2020, data on the use of the three drugs to prevent severe COVID-19 were “either unavailable or equivocal,” they said. Since then, accumulating data support the current study findings of the nonefficacy of ivermectin and fluvoxamine, and the World Health Organization has advised against their use for COVID-19, although the WHO has not provided guidance for the use of metformin.

The authors called on clinicians to stop using ivermectin and fluvoxamine to treat COVID-19 patients.

“With respect to clinical decisions about COVID-19 treatment, some drug choices, especially those that have negative [World Health Organization] recommendations, are clearly wrong,” they wrote. “In keeping with evidence-based medical practice, patients with COVID-19 must be treated with efficacious medications; they deserve nothing less.”

The study was supported by the Parsemus Foundation, Rainwater Charitable Foundation, Fast Grants, and UnitedHealth Group Foundation. The fluvoxamine placebo tablets were donated by Apotex Pharmaceuticals. The ivermectin placebo and active tablets were donated by Edenbridge Pharmaceuticals. Lead author Dr. Bramante was supported the National Center for Advancing Translational Sciences and the National Institute of Diabetes and Digestive and Kidney Diseases. The researchers had no financial conflicts to disclose. Dr. Abdool Karim serves as a member of the World Health Organization Science Council. Dr. Devnarain had no financial conflicts to disclose.
 

Neither metformin, ivermectin, or fluvoxamine had any impact on reducing disease severity, hospitalization, or death from COVID-19, according to results from more than 1,000 overweight or obese adult patients in the COVID-OUT randomized trial.

However, metformin showed some potential in a secondary analysis.

Early treatment to prevent severe disease remains a goal in managing the ongoing COVID-19 pandemic, and biophysical modeling suggested that metformin, ivermectin, and fluvoxamine may serve as antivirals to help reduce severe disease in COVID-19 patients, Carolyn T. Bramante, MD, of the University of Minnesota, Minneapolis, and colleagues wrote.

Thinglass/iStock Editorial/Getty Images

“We started enrolling patients at the end of December 2020,” Dr. Bramante said in an interview. “At that time, even though vaccine data were coming out, we thought it was important to test early outpatient treatment with widely available safe medications with no interactions, because the virus would evolve and vaccine availability may be limited.”

In a study published in the New England Journal of Medicine, the researchers used a two-by-three factorial design to test the ability of metformin, ivermectin, and fluvoxamine to prevent severe COVID-19 infection in nonhospitalized adults aged 30-85 years. A total of 1,431 patients at six U.S. sites were enrolled within 3 days of a confirmed infection and less than 7 days after the start of symptoms, then randomized to one of six groups: metformin plus fluvoxamine; metformin plus ivermectin; metformin plus placebo; placebo plus fluvoxamine; placebo plus ivermectin; and placebo plus placebo.

A total of 1,323 patients were included in the primary analysis. The median age of the patients was 46 years, 56% were female (of whom 6% were pregnant), and all individuals met criteria for overweight or obesity. About half (52%) of the patients had been vaccinated against COVID-19.

The primary endpoint was a composite of hypoxemia, ED visit, hospitalization, or death. The analyses were adjusted for COVID-19 vaccination and other trial medications. Overall, the adjusted odds ratios of any primary event, compared with placebo, was 0.84 for metformin (P = .19), 1.05 for ivermectin (P = .78), and 0.94 for fluvoxamine (P = .75).

The researchers also conducted a prespecified secondary analysis of components of the primary endpoint. In this analysis, the aORs for an ED visit, hospitalization, or death was 0.58 for metformin, 1.39 for ivermectin, and 1.17 for fluvoxamine. The aORs for hospitalization or death were 0.47, 0.73, and 1.11 for metformin, ivermectin, and fluvoxamine, respectively. No medication-related serious adverse events were reported with any of the drugs during the study period.

The possible benefit for prevention of severe COVID-19 with metformin was a prespecified secondary endpoint, and therefore not definitive until more research has been completed, the researchers said. Metformin has demonstrated anti-inflammatory actions in previous studies, and has shown protective effects against COVID-19 lung injury in animal studies.

Previous observational studies also have shown an association between metformin use and less severe COVID-19 in patients already taking metformin. “The proposed mechanisms of action against COVID-19 for metformin include anti-inflammatory and antiviral activity and the prevention of hyperglycemia during acute illness,” they added.

The study findings were limited by several factors including the population age range and focus on overweight and obese patients, which may limit generalizability, the researchers noted. Other limitations include the disproportionately small percentage of Black and Latino patients and the potential lack of accuracy in identifying hypoxemia via home oxygen monitors.

However, the results demonstrate that none of the three repurposed drugs – metformin, ivermectin, and fluvoxamine – prevented primary events or reduced symptom severity in COVID-19, compared with placebos, the researchers concluded.

“Metformin had several streams of evidence supporting its use: in vitro, in silico [computer modeled], observational, and in tissue. We were not surprised to see that it reduced emergency department visits, hospitalization, and death,” Dr. Bramante said in an interview.

The take-home message for clinicians is to continue to look to guideline committees for direction on COVID-19 treatments, but to continue to consider metformin along with other treatments, she said.

“All research should be replicated, whether the primary outcome is positive or negative,” Dr. Bramante emphasized. “In this case, when our positive outcome was negative and secondary outcome was positive, a confirmatory trial for metformin is particularly important.”

Ineffective drugs are inefficient use of resources

“The results of the COVID-OUT trial provide persuasive additional data that increase the confidence and degree of certainty that fluvoxamine and ivermectin are not effective in preventing progression to severe disease,” wrote Salim S. Abdool Karim, MB, and Nikita Devnarain, PhD, of the Centre for the AIDS Programme of Research in South Africa, Durban, in an accompanying editorial.

At the start of the study, in 2020, data on the use of the three drugs to prevent severe COVID-19 were “either unavailable or equivocal,” they said. Since then, accumulating data support the current study findings of the nonefficacy of ivermectin and fluvoxamine, and the World Health Organization has advised against their use for COVID-19, although the WHO has not provided guidance for the use of metformin.

The authors called on clinicians to stop using ivermectin and fluvoxamine to treat COVID-19 patients.

“With respect to clinical decisions about COVID-19 treatment, some drug choices, especially those that have negative [World Health Organization] recommendations, are clearly wrong,” they wrote. “In keeping with evidence-based medical practice, patients with COVID-19 must be treated with efficacious medications; they deserve nothing less.”

The study was supported by the Parsemus Foundation, Rainwater Charitable Foundation, Fast Grants, and UnitedHealth Group Foundation. The fluvoxamine placebo tablets were donated by Apotex Pharmaceuticals. The ivermectin placebo and active tablets were donated by Edenbridge Pharmaceuticals. Lead author Dr. Bramante was supported the National Center for Advancing Translational Sciences and the National Institute of Diabetes and Digestive and Kidney Diseases. The researchers had no financial conflicts to disclose. Dr. Abdool Karim serves as a member of the World Health Organization Science Council. Dr. Devnarain had no financial conflicts to disclose.
 

Pfizer has sent an application to the Food and Drug Administration for emergency use authorization of its updated COVID-19 booster vaccine for the fall of 2022, the company announced on Aug. 22.

The vaccine, which is adapted for the BA.4 and BA.5 Omicron variants, would be meant for ages 12 and older. If authorized by the FDA, the doses could ship as soon as September.

“Having rapidly scaled up production, we are positioned to immediately begin distribution of the bivalent Omicron BA.4/BA.5 boosters, if authorized, to help protect individuals and families as we prepare for potential fall and winter surges,” Albert Bourla, PhD, Pfizer’s chairman and CEO, said in the statement.

Earlier this year, the FDA ordered vaccine makers such as Pfizer and Moderna to update their shots to target BA.4 and BA.5, which are better at escaping immunity from earlier vaccines and previous infections.

The United States has a contract to buy 105 million of the Pfizer doses and 66 million of the Moderna doses, according to The Associated Press. Moderna is expected to file its FDA application soon as well.

The new shots target both the original spike protein on the coronavirus and the spike mutations carried by BA.4 and BA.5. For now, BA.5 is causing 89% of new infections in the United States, followed by BA.4.6 with 6.3% and BA.4 with 4.3%, according to the latest Centers for Disease Control and Prevention data.

There’s no way to tell if BA.5 will still be the dominant strain this winter or if new variant will replace it, the AP reported. But public health officials have supported the updated boosters as a way to target the most recent strains and increase immunity again.

On Aug. 15, Great Britain became the first country to authorize another one of Moderna’s updated vaccines, which adds protection against BA.1, or the original Omicron strain that became dominant in the winter of 2021-2022. European regulators are considering this shot, the AP reported, but the United States opted not to use this version since new Omicron variants have become dominant.

To approve the latest Pfizer shot, the FDA will rely on scientific testing of prior updates to the vaccine, rather than the newest boosters, to decide whether to fast-track the updated shots for fall, the AP reported. This method is like how flu vaccines are updated each year without large studies that take months.

Previously, Pfizer announced results from a study that found the earlier Omicron update significantly boosted antibodies capable of fighting the BA.1 variant and provided some protection against BA.4 and BA.5. The company’s latest FDA application contains that data and animal testing on the newest booster, the AP reported.

Pfizer will start a trial using the BA.4/BA.5 booster in coming weeks to get more data on how well the latest shot works. Moderna has begun a similar study.

The full results from these studies won’t be available before a fall booster campaign, which is why the FDA and public health officials have called for an updated shot to be ready for distribution in September.

“It’s clear that none of these vaccines are going to completely prevent infection,” Rachel Presti, MD, a researcher with the Moderna trial and an infectious diseases specialist at Washington University in St. Louis, told the AP.

But previous studies of variant booster candidates have shown that “you still get a broader immune response giving a variant booster than giving the same booster,” she said.

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

Pfizer has sent an application to the Food and Drug Administration for emergency use authorization of its updated COVID-19 booster vaccine for the fall of 2022, the company announced on Aug. 22.

The vaccine, which is adapted for the BA.4 and BA.5 Omicron variants, would be meant for ages 12 and older. If authorized by the FDA, the doses could ship as soon as September.

“Having rapidly scaled up production, we are positioned to immediately begin distribution of the bivalent Omicron BA.4/BA.5 boosters, if authorized, to help protect individuals and families as we prepare for potential fall and winter surges,” Albert Bourla, PhD, Pfizer’s chairman and CEO, said in the statement.

Earlier this year, the FDA ordered vaccine makers such as Pfizer and Moderna to update their shots to target BA.4 and BA.5, which are better at escaping immunity from earlier vaccines and previous infections.

The United States has a contract to buy 105 million of the Pfizer doses and 66 million of the Moderna doses, according to The Associated Press. Moderna is expected to file its FDA application soon as well.

The new shots target both the original spike protein on the coronavirus and the spike mutations carried by BA.4 and BA.5. For now, BA.5 is causing 89% of new infections in the United States, followed by BA.4.6 with 6.3% and BA.4 with 4.3%, according to the latest Centers for Disease Control and Prevention data.

There’s no way to tell if BA.5 will still be the dominant strain this winter or if new variant will replace it, the AP reported. But public health officials have supported the updated boosters as a way to target the most recent strains and increase immunity again.

On Aug. 15, Great Britain became the first country to authorize another one of Moderna’s updated vaccines, which adds protection against BA.1, or the original Omicron strain that became dominant in the winter of 2021-2022. European regulators are considering this shot, the AP reported, but the United States opted not to use this version since new Omicron variants have become dominant.

To approve the latest Pfizer shot, the FDA will rely on scientific testing of prior updates to the vaccine, rather than the newest boosters, to decide whether to fast-track the updated shots for fall, the AP reported. This method is like how flu vaccines are updated each year without large studies that take months.

Previously, Pfizer announced results from a study that found the earlier Omicron update significantly boosted antibodies capable of fighting the BA.1 variant and provided some protection against BA.4 and BA.5. The company’s latest FDA application contains that data and animal testing on the newest booster, the AP reported.

Pfizer will start a trial using the BA.4/BA.5 booster in coming weeks to get more data on how well the latest shot works. Moderna has begun a similar study.

The full results from these studies won’t be available before a fall booster campaign, which is why the FDA and public health officials have called for an updated shot to be ready for distribution in September.

“It’s clear that none of these vaccines are going to completely prevent infection,” Rachel Presti, MD, a researcher with the Moderna trial and an infectious diseases specialist at Washington University in St. Louis, told the AP.

But previous studies of variant booster candidates have shown that “you still get a broader immune response giving a variant booster than giving the same booster,” she said.

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

Pfizer has sent an application to the Food and Drug Administration for emergency use authorization of its updated COVID-19 booster vaccine for the fall of 2022, the company announced on Aug. 22.

The vaccine, which is adapted for the BA.4 and BA.5 Omicron variants, would be meant for ages 12 and older. If authorized by the FDA, the doses could ship as soon as September.

“Having rapidly scaled up production, we are positioned to immediately begin distribution of the bivalent Omicron BA.4/BA.5 boosters, if authorized, to help protect individuals and families as we prepare for potential fall and winter surges,” Albert Bourla, PhD, Pfizer’s chairman and CEO, said in the statement.

Earlier this year, the FDA ordered vaccine makers such as Pfizer and Moderna to update their shots to target BA.4 and BA.5, which are better at escaping immunity from earlier vaccines and previous infections.

The United States has a contract to buy 105 million of the Pfizer doses and 66 million of the Moderna doses, according to The Associated Press. Moderna is expected to file its FDA application soon as well.

The new shots target both the original spike protein on the coronavirus and the spike mutations carried by BA.4 and BA.5. For now, BA.5 is causing 89% of new infections in the United States, followed by BA.4.6 with 6.3% and BA.4 with 4.3%, according to the latest Centers for Disease Control and Prevention data.

There’s no way to tell if BA.5 will still be the dominant strain this winter or if new variant will replace it, the AP reported. But public health officials have supported the updated boosters as a way to target the most recent strains and increase immunity again.

On Aug. 15, Great Britain became the first country to authorize another one of Moderna’s updated vaccines, which adds protection against BA.1, or the original Omicron strain that became dominant in the winter of 2021-2022. European regulators are considering this shot, the AP reported, but the United States opted not to use this version since new Omicron variants have become dominant.

To approve the latest Pfizer shot, the FDA will rely on scientific testing of prior updates to the vaccine, rather than the newest boosters, to decide whether to fast-track the updated shots for fall, the AP reported. This method is like how flu vaccines are updated each year without large studies that take months.

Previously, Pfizer announced results from a study that found the earlier Omicron update significantly boosted antibodies capable of fighting the BA.1 variant and provided some protection against BA.4 and BA.5. The company’s latest FDA application contains that data and animal testing on the newest booster, the AP reported.

Pfizer will start a trial using the BA.4/BA.5 booster in coming weeks to get more data on how well the latest shot works. Moderna has begun a similar study.

The full results from these studies won’t be available before a fall booster campaign, which is why the FDA and public health officials have called for an updated shot to be ready for distribution in September.

“It’s clear that none of these vaccines are going to completely prevent infection,” Rachel Presti, MD, a researcher with the Moderna trial and an infectious diseases specialist at Washington University in St. Louis, told the AP.

But previous studies of variant booster candidates have shown that “you still get a broader immune response giving a variant booster than giving the same booster,” she said.

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

New COVID-19 cases in children declined for a second consecutive week, even as emergency department visit rates started rising for those aged 12-15 years.

The 7-day average percentage of ED visits with diagnosed COVID, which had reached a post-Omicron high of 3.5% in late July for those aged 12-15, began to fall and was down to 3.0% on Aug. 12. That trend reversed, however, and the rate was up to 3.6% on Aug. 19, the last date for which data are available from the Centers for Disease Control and Prevention.

That change of COVID fortunes cannot yet be seen for all children. The 7-day average ED visit rate for those aged 0-11 years peaked at 6.8% during the last week of July and has continued to fall, dropping from 5.7% on Aug. 12 to 5.1% on Aug. 19. Children aged 16-17 years seem to be taking a middle path: Their ED-visit rate declined from late July into mid-August but held steady over the last week, according to the CDC’s COVID Data Tracker.

There is a hint of the same trend regarding new admissions among children aged 0-17 years. The national rate, which had declined in recent weeks, ticked up from 0.42 to 0.43 new admissions per 100,000 population over the last week of available data, the CDC said.
 

Weekly cases fall below 80,000

New cases in general were down by 8.5% from the previous week, dropping from 87,902 for the week of Aug. 5-11 to 79,525 for Aug. 12-18. That marked the second straight week with fewer cases after a 4-week period that saw weekly totals increase from almost 68,000 to nearly 97,000, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

The AAP and CHA put the cumulative number of child COVID-19 cases at just under 14.4 million since the pandemic began, which represents 18.4% of cases among all ages. The CDC estimates that there have been almost 14.7 million cases in children aged 0-17 years, as well as 1,750 deaths, of which 14 were reported in the last week (Aug. 16-22).

The CDC age subgroups indicate that children aged 0-4 years have experienced fewer cases (2.9 million) than children aged 5-11 years (5.6 million cases) and 12-15 (3.0 million cases) but more deaths: 548 so far, versus 432 for 5- to 11-year-olds and 437 for 12- to 15-year-olds, the COVID Data Tracker shows. Those aged 0-4 make up 6% of the total U.S. population, compared with 8.7% and 5.1%, respectively, for the older children.

Most younger children still not vaccinated

Although it may not qualify as a big push to vaccinate children before the start of the new school year, first-time vaccinations did rise somewhat in late July and August for children aged 5-17 years. Among children younger than 5 years, though, initial doses of the vaccine fell during the second full week of August, especially in 2- to 4-year-olds, based on the CDC data.

Through almost 2 months of vaccine eligibility, 4.8% of children under age 5 have received at least one dose and 0.9% are fully vaccinated as of Aug. 17. The current rates are 37.8% (one dose) and 30.4% (completed) for those aged 5-11 and 70.5% and 60.3% for 12- to 17-year-olds.

New COVID-19 cases in children declined for a second consecutive week, even as emergency department visit rates started rising for those aged 12-15 years.

The 7-day average percentage of ED visits with diagnosed COVID, which had reached a post-Omicron high of 3.5% in late July for those aged 12-15, began to fall and was down to 3.0% on Aug. 12. That trend reversed, however, and the rate was up to 3.6% on Aug. 19, the last date for which data are available from the Centers for Disease Control and Prevention.

That change of COVID fortunes cannot yet be seen for all children. The 7-day average ED visit rate for those aged 0-11 years peaked at 6.8% during the last week of July and has continued to fall, dropping from 5.7% on Aug. 12 to 5.1% on Aug. 19. Children aged 16-17 years seem to be taking a middle path: Their ED-visit rate declined from late July into mid-August but held steady over the last week, according to the CDC’s COVID Data Tracker.

There is a hint of the same trend regarding new admissions among children aged 0-17 years. The national rate, which had declined in recent weeks, ticked up from 0.42 to 0.43 new admissions per 100,000 population over the last week of available data, the CDC said.
 

Weekly cases fall below 80,000

New cases in general were down by 8.5% from the previous week, dropping from 87,902 for the week of Aug. 5-11 to 79,525 for Aug. 12-18. That marked the second straight week with fewer cases after a 4-week period that saw weekly totals increase from almost 68,000 to nearly 97,000, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

The AAP and CHA put the cumulative number of child COVID-19 cases at just under 14.4 million since the pandemic began, which represents 18.4% of cases among all ages. The CDC estimates that there have been almost 14.7 million cases in children aged 0-17 years, as well as 1,750 deaths, of which 14 were reported in the last week (Aug. 16-22).

The CDC age subgroups indicate that children aged 0-4 years have experienced fewer cases (2.9 million) than children aged 5-11 years (5.6 million cases) and 12-15 (3.0 million cases) but more deaths: 548 so far, versus 432 for 5- to 11-year-olds and 437 for 12- to 15-year-olds, the COVID Data Tracker shows. Those aged 0-4 make up 6% of the total U.S. population, compared with 8.7% and 5.1%, respectively, for the older children.

Most younger children still not vaccinated

Although it may not qualify as a big push to vaccinate children before the start of the new school year, first-time vaccinations did rise somewhat in late July and August for children aged 5-17 years. Among children younger than 5 years, though, initial doses of the vaccine fell during the second full week of August, especially in 2- to 4-year-olds, based on the CDC data.

Through almost 2 months of vaccine eligibility, 4.8% of children under age 5 have received at least one dose and 0.9% are fully vaccinated as of Aug. 17. The current rates are 37.8% (one dose) and 30.4% (completed) for those aged 5-11 and 70.5% and 60.3% for 12- to 17-year-olds.

New COVID-19 cases in children declined for a second consecutive week, even as emergency department visit rates started rising for those aged 12-15 years.

The 7-day average percentage of ED visits with diagnosed COVID, which had reached a post-Omicron high of 3.5% in late July for those aged 12-15, began to fall and was down to 3.0% on Aug. 12. That trend reversed, however, and the rate was up to 3.6% on Aug. 19, the last date for which data are available from the Centers for Disease Control and Prevention.

That change of COVID fortunes cannot yet be seen for all children. The 7-day average ED visit rate for those aged 0-11 years peaked at 6.8% during the last week of July and has continued to fall, dropping from 5.7% on Aug. 12 to 5.1% on Aug. 19. Children aged 16-17 years seem to be taking a middle path: Their ED-visit rate declined from late July into mid-August but held steady over the last week, according to the CDC’s COVID Data Tracker.

There is a hint of the same trend regarding new admissions among children aged 0-17 years. The national rate, which had declined in recent weeks, ticked up from 0.42 to 0.43 new admissions per 100,000 population over the last week of available data, the CDC said.
 

Weekly cases fall below 80,000

New cases in general were down by 8.5% from the previous week, dropping from 87,902 for the week of Aug. 5-11 to 79,525 for Aug. 12-18. That marked the second straight week with fewer cases after a 4-week period that saw weekly totals increase from almost 68,000 to nearly 97,000, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

The AAP and CHA put the cumulative number of child COVID-19 cases at just under 14.4 million since the pandemic began, which represents 18.4% of cases among all ages. The CDC estimates that there have been almost 14.7 million cases in children aged 0-17 years, as well as 1,750 deaths, of which 14 were reported in the last week (Aug. 16-22).

The CDC age subgroups indicate that children aged 0-4 years have experienced fewer cases (2.9 million) than children aged 5-11 years (5.6 million cases) and 12-15 (3.0 million cases) but more deaths: 548 so far, versus 432 for 5- to 11-year-olds and 437 for 12- to 15-year-olds, the COVID Data Tracker shows. Those aged 0-4 make up 6% of the total U.S. population, compared with 8.7% and 5.1%, respectively, for the older children.

Most younger children still not vaccinated

Although it may not qualify as a big push to vaccinate children before the start of the new school year, first-time vaccinations did rise somewhat in late July and August for children aged 5-17 years. Among children younger than 5 years, though, initial doses of the vaccine fell during the second full week of August, especially in 2- to 4-year-olds, based on the CDC data.

Through almost 2 months of vaccine eligibility, 4.8% of children under age 5 have received at least one dose and 0.9% are fully vaccinated as of Aug. 17. The current rates are 37.8% (one dose) and 30.4% (completed) for those aged 5-11 and 70.5% and 60.3% for 12- to 17-year-olds.

New research suggests that regular physical activity can help lower the risk of COVID-19 infection and its severity, with a weekly tally of 150 minutes of moderate, or 75 minutes of vigorous, physical activity affording the best protection.

“Our findings highlight the protective effects of engaging in sufficient physical activity as a public health strategy, with potential benefits to reduce the risk of severe COVID-19,” say Antonio García-Hermoso, PhD, Public University of Navarra, Pamplona, Spain, and colleagues.

“Regular physical activity seemed to be related to a lower risk of COVID-19 infection, Dr. García-Hermoso said in an interview. “There is evidence that regular physical activity might contribute to a more effective immune response, providing enhanced protective immunity to infections, which could explain the relationship between exercise consistency with COVID-19 infection.”

Regular exercise may also help to boost the body’s anti-inflammatory responses, as well as cardiorespiratory and muscular fitness, all of which may explain its beneficial effects on COVID-19 severity, the researchers say.

The study was published online in the British Journal of Sports Medicine.
 

Strong protection from COVID?

A growing body of evidence suggests that increased physical activity may modulate the course of COVID-19 infection and reduce the risk of poor outcomes. The new analysis is the first to systematically evaluate and pool data on the effect of regular physical activity on COVID-19 outcomes.

The findings are based on data from 16 studies with over 1.8 million adults (53% women, mean age 53 years).

Individuals who included regular physical activity in their weekly routine had an 11% lower risk for infection with SARS-CoV-2 (hazard ratio, 0.89; 95% confidence interval, 0.84-0.95), compared with inactive peers.

The physically active adults also had a 36% (HR, 0.64; 95% CI, 0.54-0.76) lower risk of being hospitalized, a 44% (HR, 0.66; 95% CI, 0.58-0.77) lower risk for severe COVID-19 illness, and a 43% (HR, 0.57; 95% CI, 0.46-0.71) lower risk of dying from COVID-19 than their inactive peers.

The greatest protective effect occurs with achieving at least 500 metabolic equivalent of task (MET) minutes per week of physical activity – equivalent to 150 minutes of moderate-intensity or 75 min of vigorous-intensity physical activity per week – with no added benefit beyond this level.

The researchers caution that the analysis included observational studies, differing study designs, subjective assessments of physical activity levels, and concerned only the Beta and Delta variants of SARS-CoV-2, not Omicron.

Despite these limitations, the researchers say their findings “may help guide physicians and health care policymakers in making recommendations and developing guidelines with respect to the degree of physical activity that can help reduce the risk of infectivity, hospitalization, severity, and mortality of COVID-19 at both the individual and the population level, especially in high-risk patients.”
 

Helpful, but not a panacea

Reached for comment, Sean Heffron, MD, a preventive cardiologist and assistant professor of medicine at NYU Langone Health, New York, said the study “supports the well-established nonlinear association of increasing physical activity with adverse outcomes from a diverse array of diseases, including infectious diseases, such as COVID-19.”

The observation is not particularly surprising, he said.

“It is as I would suspect. They compiled data from a large number of studies published over the past several years that all had consistent findings,” Dr. Heffron said.

“The take-away from a public health standpoint is that being physically active improves health in myriad ways. That being said, it is not a panacea, so additional measures (masking, vaccinations, etc.) are important for everyone,” he said.

Also weighing in, Joseph Herrera, DO, chair of the department of rehabilitation for Mount Sinai Health System, New York, said, “If you are physically fit, your body is more resilient and better prepared to handle the stressors of COVID or any other disease process.”

For now, however, the question of whether physical fitness is actually protective against COVID remains unclear. “I’m just not sure right now,” Dr. Herrera said in an interview.

He said he has treated athletes in professional sports – including the National Football League and Major League Baseball – and some of them have had long COVID and have not returned to play. “These are athletes at the peak of fitness and their career.”

Nonetheless, Dr. Herrera said a good public health message in general is to stay fit or get fit.

“That’s something I preach all the time,” he told this news organization.

Dr. García-Hermoso agreed. “In contrast to the vast majority of drugs, exercise is free of adverse effects. It’s time to consider exercise as medicine. It’s never too late to start being physically active.”

The study had no specific funding. Dr. García-Hermoso, Dr. Heffron, and Dr. Herrera have reported no relevant financial relationships.

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

New research suggests that regular physical activity can help lower the risk of COVID-19 infection and its severity, with a weekly tally of 150 minutes of moderate, or 75 minutes of vigorous, physical activity affording the best protection.

“Our findings highlight the protective effects of engaging in sufficient physical activity as a public health strategy, with potential benefits to reduce the risk of severe COVID-19,” say Antonio García-Hermoso, PhD, Public University of Navarra, Pamplona, Spain, and colleagues.

“Regular physical activity seemed to be related to a lower risk of COVID-19 infection, Dr. García-Hermoso said in an interview. “There is evidence that regular physical activity might contribute to a more effective immune response, providing enhanced protective immunity to infections, which could explain the relationship between exercise consistency with COVID-19 infection.”

Regular exercise may also help to boost the body’s anti-inflammatory responses, as well as cardiorespiratory and muscular fitness, all of which may explain its beneficial effects on COVID-19 severity, the researchers say.

The study was published online in the British Journal of Sports Medicine.
 

Strong protection from COVID?

A growing body of evidence suggests that increased physical activity may modulate the course of COVID-19 infection and reduce the risk of poor outcomes. The new analysis is the first to systematically evaluate and pool data on the effect of regular physical activity on COVID-19 outcomes.

The findings are based on data from 16 studies with over 1.8 million adults (53% women, mean age 53 years).

Individuals who included regular physical activity in their weekly routine had an 11% lower risk for infection with SARS-CoV-2 (hazard ratio, 0.89; 95% confidence interval, 0.84-0.95), compared with inactive peers.

The physically active adults also had a 36% (HR, 0.64; 95% CI, 0.54-0.76) lower risk of being hospitalized, a 44% (HR, 0.66; 95% CI, 0.58-0.77) lower risk for severe COVID-19 illness, and a 43% (HR, 0.57; 95% CI, 0.46-0.71) lower risk of dying from COVID-19 than their inactive peers.

The greatest protective effect occurs with achieving at least 500 metabolic equivalent of task (MET) minutes per week of physical activity – equivalent to 150 minutes of moderate-intensity or 75 min of vigorous-intensity physical activity per week – with no added benefit beyond this level.

The researchers caution that the analysis included observational studies, differing study designs, subjective assessments of physical activity levels, and concerned only the Beta and Delta variants of SARS-CoV-2, not Omicron.

Despite these limitations, the researchers say their findings “may help guide physicians and health care policymakers in making recommendations and developing guidelines with respect to the degree of physical activity that can help reduce the risk of infectivity, hospitalization, severity, and mortality of COVID-19 at both the individual and the population level, especially in high-risk patients.”
 

Helpful, but not a panacea

Reached for comment, Sean Heffron, MD, a preventive cardiologist and assistant professor of medicine at NYU Langone Health, New York, said the study “supports the well-established nonlinear association of increasing physical activity with adverse outcomes from a diverse array of diseases, including infectious diseases, such as COVID-19.”

The observation is not particularly surprising, he said.

“It is as I would suspect. They compiled data from a large number of studies published over the past several years that all had consistent findings,” Dr. Heffron said.

“The take-away from a public health standpoint is that being physically active improves health in myriad ways. That being said, it is not a panacea, so additional measures (masking, vaccinations, etc.) are important for everyone,” he said.

Also weighing in, Joseph Herrera, DO, chair of the department of rehabilitation for Mount Sinai Health System, New York, said, “If you are physically fit, your body is more resilient and better prepared to handle the stressors of COVID or any other disease process.”

For now, however, the question of whether physical fitness is actually protective against COVID remains unclear. “I’m just not sure right now,” Dr. Herrera said in an interview.

He said he has treated athletes in professional sports – including the National Football League and Major League Baseball – and some of them have had long COVID and have not returned to play. “These are athletes at the peak of fitness and their career.”

Nonetheless, Dr. Herrera said a good public health message in general is to stay fit or get fit.

“That’s something I preach all the time,” he told this news organization.

Dr. García-Hermoso agreed. “In contrast to the vast majority of drugs, exercise is free of adverse effects. It’s time to consider exercise as medicine. It’s never too late to start being physically active.”

The study had no specific funding. Dr. García-Hermoso, Dr. Heffron, and Dr. Herrera have reported no relevant financial relationships.

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

New research suggests that regular physical activity can help lower the risk of COVID-19 infection and its severity, with a weekly tally of 150 minutes of moderate, or 75 minutes of vigorous, physical activity affording the best protection.

“Our findings highlight the protective effects of engaging in sufficient physical activity as a public health strategy, with potential benefits to reduce the risk of severe COVID-19,” say Antonio García-Hermoso, PhD, Public University of Navarra, Pamplona, Spain, and colleagues.

“Regular physical activity seemed to be related to a lower risk of COVID-19 infection, Dr. García-Hermoso said in an interview. “There is evidence that regular physical activity might contribute to a more effective immune response, providing enhanced protective immunity to infections, which could explain the relationship between exercise consistency with COVID-19 infection.”

Regular exercise may also help to boost the body’s anti-inflammatory responses, as well as cardiorespiratory and muscular fitness, all of which may explain its beneficial effects on COVID-19 severity, the researchers say.

The study was published online in the British Journal of Sports Medicine.
 

Strong protection from COVID?

A growing body of evidence suggests that increased physical activity may modulate the course of COVID-19 infection and reduce the risk of poor outcomes. The new analysis is the first to systematically evaluate and pool data on the effect of regular physical activity on COVID-19 outcomes.

The findings are based on data from 16 studies with over 1.8 million adults (53% women, mean age 53 years).

Individuals who included regular physical activity in their weekly routine had an 11% lower risk for infection with SARS-CoV-2 (hazard ratio, 0.89; 95% confidence interval, 0.84-0.95), compared with inactive peers.

The physically active adults also had a 36% (HR, 0.64; 95% CI, 0.54-0.76) lower risk of being hospitalized, a 44% (HR, 0.66; 95% CI, 0.58-0.77) lower risk for severe COVID-19 illness, and a 43% (HR, 0.57; 95% CI, 0.46-0.71) lower risk of dying from COVID-19 than their inactive peers.

The greatest protective effect occurs with achieving at least 500 metabolic equivalent of task (MET) minutes per week of physical activity – equivalent to 150 minutes of moderate-intensity or 75 min of vigorous-intensity physical activity per week – with no added benefit beyond this level.

The researchers caution that the analysis included observational studies, differing study designs, subjective assessments of physical activity levels, and concerned only the Beta and Delta variants of SARS-CoV-2, not Omicron.

Despite these limitations, the researchers say their findings “may help guide physicians and health care policymakers in making recommendations and developing guidelines with respect to the degree of physical activity that can help reduce the risk of infectivity, hospitalization, severity, and mortality of COVID-19 at both the individual and the population level, especially in high-risk patients.”
 

Helpful, but not a panacea

Reached for comment, Sean Heffron, MD, a preventive cardiologist and assistant professor of medicine at NYU Langone Health, New York, said the study “supports the well-established nonlinear association of increasing physical activity with adverse outcomes from a diverse array of diseases, including infectious diseases, such as COVID-19.”

The observation is not particularly surprising, he said.

“It is as I would suspect. They compiled data from a large number of studies published over the past several years that all had consistent findings,” Dr. Heffron said.

“The take-away from a public health standpoint is that being physically active improves health in myriad ways. That being said, it is not a panacea, so additional measures (masking, vaccinations, etc.) are important for everyone,” he said.

Also weighing in, Joseph Herrera, DO, chair of the department of rehabilitation for Mount Sinai Health System, New York, said, “If you are physically fit, your body is more resilient and better prepared to handle the stressors of COVID or any other disease process.”

For now, however, the question of whether physical fitness is actually protective against COVID remains unclear. “I’m just not sure right now,” Dr. Herrera said in an interview.

He said he has treated athletes in professional sports – including the National Football League and Major League Baseball – and some of them have had long COVID and have not returned to play. “These are athletes at the peak of fitness and their career.”

Nonetheless, Dr. Herrera said a good public health message in general is to stay fit or get fit.

“That’s something I preach all the time,” he told this news organization.

Dr. García-Hermoso agreed. “In contrast to the vast majority of drugs, exercise is free of adverse effects. It’s time to consider exercise as medicine. It’s never too late to start being physically active.”

The study had no specific funding. Dr. García-Hermoso, Dr. Heffron, and Dr. Herrera have reported no relevant financial relationships.

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

Many changes in the evolution of the treatment of diabetes have occurred during this year and 2021. Randomized controlled trials have resulted in updated guidelines for the use of glucagonlike peptide-1 receptor agonists (GLP1RAs) and continuous glucose monitoring (CGM) technology. I am hoping my discussion about these major advances in this edition of Highlights will be helpful to those caring for patients with diabetes.

Tirzepatide

The first GLP1RA, exenatide, was released in April 2005. Since then, numerous daily and weekly drugs of this class have been developed. We’ve learned they are effective glucose lowering drugs, and the weekly agents dulaglutide and semaglutide have shown impressive weight reduction properties as well as cardiovascular benefits.

Secondary outcomes have also shown renal benefits to these agents, and studies for primary renal efficacy are pending. Due to all of these properties, the GLP1RAs are recommended as the first injectable for the treatment of type 2 diabetes, prior to insulin initiation.¹

The next generation of these agents are a combination of a GLP1RA and a glucose-dependent insulinotropic polypeptide (GIP). Glucagonlike peptide-1 (GLP-1) stimulates insulin secretion, inhibits glucagon secretion, delays gastric emptying, and has central effects inducing satiety.

We now understand that GIP is the main incretin hormone in those without diabetes, causative of most of the incretin effects. But the insulin response after GIP secretion in type 2 diabetes is strongly reduced. It is now appreciated that this poor effect of GIP can be reduced when used in combination with a GLP1RA. This combination incretin, called by some a “twincretin,” is the basis for the drug tirzepatide which was approved by the Food and Drug Administration in May of 2022.

The data supporting this agent for both diabetes and obesity are impressive. For example, in a 40-week study with a baseline HbA1c of 8.0%, those randomized to tirzepatide at 5 mg, 10 mg, and 15 mg had HbA1c reductions of 1.87%, 1.89%, and 2.07% respectively.² Over 81% at all doses had HbA1c levels less than 6.5% at 40 weeks.

For the 5-mg, 10-mg, and 15-mg doses, weight change from baseline was 7.9%, 9.3%, and 11.0% respectively. Like older GLP1RAs, gastrointestinal side effects were the main problem. For the three doses, 3%, 5%, and 7%, respectively, had to stop the drug, compared with the 3% who stopped taking the placebo. In another study, tirzepatide was noninferior or superior at all three doses compared with semaglutide 1 mg weekly.³

In a population without diabetes, with 40% of patients having prediabetes, weight loss percentages for the three doses were 15.0%, 19.5%, and 20.9% respectively.⁴ Discontinuation percentages due to side effects were 4%-7%. The exciting part is we now have a drug that approaches weight loss from bariatric surgery. The cardiovascular and renal outcome trials are now underway, but the enthusiasm for this drug is clear from the data.

Like other GLP1RAs, the key is to start low and go slowly. It is recommended to start tirzepatide at 2.5 mg four times a week, then increase to 5 mg. Due to gastrointestinal side effects, some patients will do better at the lower dose before increasing. For those switching from another GLP1RA, there are no data to guide us but, in my practice, I start those patients at 5 mg weekly.
 

Continuous glucose monitoring

Data continue to accumulate that this form of glycemic self-monitoring is effective to reduce HbA1c levels and minimize hypoglycemia in both type 1 and type 2 diabetes. The most important change to the 2022 American Diabetes Association (ADA) standards of care is recognizing CGM as level A evidence for those receiving basal insulin without mealtime insulin.⁵ There are four CGMs on the market, but most of the market uses the Dexcom G6 or the Libre 2. Both of these devices will be updated within the next few months to newer generation sensors.

While there are similarities and differences between the two devices, by late 2022 and early 2023 changes to both will reduce the dissimilarities.

The next generation Libre (Libre 3) will be continuous, and “scanning” will no longer be required.  For those unable to get insurance to cover CGM, the Libre will continue to be more affordable than the Dexcom. Alerts will be present on both, but the Dexcom G7 will be approved for both the arm and the abdomen. The Dexcom also can communicate with several automated insulin delivery systems and data can be shared real-time with family members.

For clinicians just starting patients on this technology, my suggestion is to focus on one system so both the provider and staff can become familiar with it. It is key to review downloaded glucose metrics, in addition to the “ambulatory glucose profile,” a graphic overview of daily glycemia where patterns can be identified. It is also helpful to ask for assistance from endocrinologists who have experience with CGMs, in addition to the representatives of the companies.

COVID-19 and new-onset diabetes

From the beginning of the COVID 19 pandemic in 2020, it was clear that stress hyperglycemia and glucose dysregulation was an important observation for those infected. What was not known at the time is that for some, the hyperglycemia continued, and permanent diabetes ensued.

In one study of over 2.7 million U.S. veterans, men infected with COVID-19, but not women, were at a higher risk of new incident diabetes at 120 days after infection compared to no infection (odds ratio for men = 2.56).⁶

Another literature review using meta-analyses and cross-sectional studies concluded new-onset diabetes following COVID-19 infection can have a varied phenotype, with no risk factors, presenting from diabetic ketoacidosis to milder forms of diabetes.⁷

The current thought is that COVID-19 binds to the ACE2 and TMPRSS2 receptors which appear to be located on the beta-cells in the islet, resulting in insulin deficiency, in addition to the insulin resistance that seems to persist after the acute infection. Much more needs to be learned about this, but clinicians need to appreciate this appears to be a new form of diabetes and optimal treatments are not yet clear.

Dr. Hirsch is an endocrinologist, professor of medicine, and diabetes treatment and teaching chair at the University of Washington, Seattle. He has received research grant support from Dexcom and Insulet and has provided consulting to Abbott, Roche, Lifescan, and GWave. You can contact him at [email protected].

References

1. American Diabetes Association Professional Practice Committee. Pharmacologic approaches to glycemic treatment: Standards of Medical Care in Diabetes-2022. Diabetes Care. 2022;45(Suppl 1):S125-S143.

2. Rosenstock J et al. Efficacy and safety of a novel GIP and GLP-1 receptor agonist tirzepatide in patients with type 2 diabetes (SURPASS-1): A double-blind, randomised, phase 3 trial. Lancet. 2021;398:143-55.

3. Frias JP et al. Tirzepatide versus semaglutide once weekly in patients with type 2 diabetes. N Engl J Med. 2021;385:503-15.

4. Jastreboff AM et al. Tirzepatide once weekly for the treatment of obesity. N Engl J Med. 2022;387:205-16.

5. American Diabetes Association Professional Practice Committee. Diabetes technology: Standards of Medical Care in Diabetes–2022. Diabetes Care. 2022;45(Suppl 1):S97-S112.

6. Wander PL et al. The incidence of diabetes in 2,777,768 veterans with and without recent SARS-CoV-2 infection. Diabetes Care 2022;45:782-8.

7. Joshi SC and Pozzilli P. COVID-19 induced diabetes: A novel presentation. Diabetes Res Clin Pract. 2022 Aug 6;191:110034.

Many changes in the evolution of the treatment of diabetes have occurred during this year and 2021. Randomized controlled trials have resulted in updated guidelines for the use of glucagonlike peptide-1 receptor agonists (GLP1RAs) and continuous glucose monitoring (CGM) technology. I am hoping my discussion about these major advances in this edition of Highlights will be helpful to those caring for patients with diabetes.

Tirzepatide

The first GLP1RA, exenatide, was released in April 2005. Since then, numerous daily and weekly drugs of this class have been developed. We’ve learned they are effective glucose lowering drugs, and the weekly agents dulaglutide and semaglutide have shown impressive weight reduction properties as well as cardiovascular benefits.

Secondary outcomes have also shown renal benefits to these agents, and studies for primary renal efficacy are pending. Due to all of these properties, the GLP1RAs are recommended as the first injectable for the treatment of type 2 diabetes, prior to insulin initiation.¹

The next generation of these agents are a combination of a GLP1RA and a glucose-dependent insulinotropic polypeptide (GIP). Glucagonlike peptide-1 (GLP-1) stimulates insulin secretion, inhibits glucagon secretion, delays gastric emptying, and has central effects inducing satiety.

We now understand that GIP is the main incretin hormone in those without diabetes, causative of most of the incretin effects. But the insulin response after GIP secretion in type 2 diabetes is strongly reduced. It is now appreciated that this poor effect of GIP can be reduced when used in combination with a GLP1RA. This combination incretin, called by some a “twincretin,” is the basis for the drug tirzepatide which was approved by the Food and Drug Administration in May of 2022.

The data supporting this agent for both diabetes and obesity are impressive. For example, in a 40-week study with a baseline HbA1c of 8.0%, those randomized to tirzepatide at 5 mg, 10 mg, and 15 mg had HbA1c reductions of 1.87%, 1.89%, and 2.07% respectively.² Over 81% at all doses had HbA1c levels less than 6.5% at 40 weeks.

For the 5-mg, 10-mg, and 15-mg doses, weight change from baseline was 7.9%, 9.3%, and 11.0% respectively. Like older GLP1RAs, gastrointestinal side effects were the main problem. For the three doses, 3%, 5%, and 7%, respectively, had to stop the drug, compared with the 3% who stopped taking the placebo. In another study, tirzepatide was noninferior or superior at all three doses compared with semaglutide 1 mg weekly.³

In a population without diabetes, with 40% of patients having prediabetes, weight loss percentages for the three doses were 15.0%, 19.5%, and 20.9% respectively.⁴ Discontinuation percentages due to side effects were 4%-7%. The exciting part is we now have a drug that approaches weight loss from bariatric surgery. The cardiovascular and renal outcome trials are now underway, but the enthusiasm for this drug is clear from the data.

Like other GLP1RAs, the key is to start low and go slowly. It is recommended to start tirzepatide at 2.5 mg four times a week, then increase to 5 mg. Due to gastrointestinal side effects, some patients will do better at the lower dose before increasing. For those switching from another GLP1RA, there are no data to guide us but, in my practice, I start those patients at 5 mg weekly.
 

Continuous glucose monitoring

Data continue to accumulate that this form of glycemic self-monitoring is effective to reduce HbA1c levels and minimize hypoglycemia in both type 1 and type 2 diabetes. The most important change to the 2022 American Diabetes Association (ADA) standards of care is recognizing CGM as level A evidence for those receiving basal insulin without mealtime insulin.⁵ There are four CGMs on the market, but most of the market uses the Dexcom G6 or the Libre 2. Both of these devices will be updated within the next few months to newer generation sensors.

While there are similarities and differences between the two devices, by late 2022 and early 2023 changes to both will reduce the dissimilarities.

The next generation Libre (Libre 3) will be continuous, and “scanning” will no longer be required.  For those unable to get insurance to cover CGM, the Libre will continue to be more affordable than the Dexcom. Alerts will be present on both, but the Dexcom G7 will be approved for both the arm and the abdomen. The Dexcom also can communicate with several automated insulin delivery systems and data can be shared real-time with family members.

For clinicians just starting patients on this technology, my suggestion is to focus on one system so both the provider and staff can become familiar with it. It is key to review downloaded glucose metrics, in addition to the “ambulatory glucose profile,” a graphic overview of daily glycemia where patterns can be identified. It is also helpful to ask for assistance from endocrinologists who have experience with CGMs, in addition to the representatives of the companies.

COVID-19 and new-onset diabetes

From the beginning of the COVID 19 pandemic in 2020, it was clear that stress hyperglycemia and glucose dysregulation was an important observation for those infected. What was not known at the time is that for some, the hyperglycemia continued, and permanent diabetes ensued.

In one study of over 2.7 million U.S. veterans, men infected with COVID-19, but not women, were at a higher risk of new incident diabetes at 120 days after infection compared to no infection (odds ratio for men = 2.56).⁶

Another literature review using meta-analyses and cross-sectional studies concluded new-onset diabetes following COVID-19 infection can have a varied phenotype, with no risk factors, presenting from diabetic ketoacidosis to milder forms of diabetes.⁷

The current thought is that COVID-19 binds to the ACE2 and TMPRSS2 receptors which appear to be located on the beta-cells in the islet, resulting in insulin deficiency, in addition to the insulin resistance that seems to persist after the acute infection. Much more needs to be learned about this, but clinicians need to appreciate this appears to be a new form of diabetes and optimal treatments are not yet clear.

Dr. Hirsch is an endocrinologist, professor of medicine, and diabetes treatment and teaching chair at the University of Washington, Seattle. He has received research grant support from Dexcom and Insulet and has provided consulting to Abbott, Roche, Lifescan, and GWave. You can contact him at [email protected].

References

1. American Diabetes Association Professional Practice Committee. Pharmacologic approaches to glycemic treatment: Standards of Medical Care in Diabetes-2022. Diabetes Care. 2022;45(Suppl 1):S125-S143.

2. Rosenstock J et al. Efficacy and safety of a novel GIP and GLP-1 receptor agonist tirzepatide in patients with type 2 diabetes (SURPASS-1): A double-blind, randomised, phase 3 trial. Lancet. 2021;398:143-55.

3. Frias JP et al. Tirzepatide versus semaglutide once weekly in patients with type 2 diabetes. N Engl J Med. 2021;385:503-15.

4. Jastreboff AM et al. Tirzepatide once weekly for the treatment of obesity. N Engl J Med. 2022;387:205-16.

5. American Diabetes Association Professional Practice Committee. Diabetes technology: Standards of Medical Care in Diabetes–2022. Diabetes Care. 2022;45(Suppl 1):S97-S112.

6. Wander PL et al. The incidence of diabetes in 2,777,768 veterans with and without recent SARS-CoV-2 infection. Diabetes Care 2022;45:782-8.

7. Joshi SC and Pozzilli P. COVID-19 induced diabetes: A novel presentation. Diabetes Res Clin Pract. 2022 Aug 6;191:110034.

Many changes in the evolution of the treatment of diabetes have occurred during this year and 2021. Randomized controlled trials have resulted in updated guidelines for the use of glucagonlike peptide-1 receptor agonists (GLP1RAs) and continuous glucose monitoring (CGM) technology. I am hoping my discussion about these major advances in this edition of Highlights will be helpful to those caring for patients with diabetes.

Tirzepatide

The first GLP1RA, exenatide, was released in April 2005. Since then, numerous daily and weekly drugs of this class have been developed. We’ve learned they are effective glucose lowering drugs, and the weekly agents dulaglutide and semaglutide have shown impressive weight reduction properties as well as cardiovascular benefits.

Secondary outcomes have also shown renal benefits to these agents, and studies for primary renal efficacy are pending. Due to all of these properties, the GLP1RAs are recommended as the first injectable for the treatment of type 2 diabetes, prior to insulin initiation.¹

The next generation of these agents are a combination of a GLP1RA and a glucose-dependent insulinotropic polypeptide (GIP). Glucagonlike peptide-1 (GLP-1) stimulates insulin secretion, inhibits glucagon secretion, delays gastric emptying, and has central effects inducing satiety.

We now understand that GIP is the main incretin hormone in those without diabetes, causative of most of the incretin effects. But the insulin response after GIP secretion in type 2 diabetes is strongly reduced. It is now appreciated that this poor effect of GIP can be reduced when used in combination with a GLP1RA. This combination incretin, called by some a “twincretin,” is the basis for the drug tirzepatide which was approved by the Food and Drug Administration in May of 2022.

The data supporting this agent for both diabetes and obesity are impressive. For example, in a 40-week study with a baseline HbA1c of 8.0%, those randomized to tirzepatide at 5 mg, 10 mg, and 15 mg had HbA1c reductions of 1.87%, 1.89%, and 2.07% respectively.² Over 81% at all doses had HbA1c levels less than 6.5% at 40 weeks.

For the 5-mg, 10-mg, and 15-mg doses, weight change from baseline was 7.9%, 9.3%, and 11.0% respectively. Like older GLP1RAs, gastrointestinal side effects were the main problem. For the three doses, 3%, 5%, and 7%, respectively, had to stop the drug, compared with the 3% who stopped taking the placebo. In another study, tirzepatide was noninferior or superior at all three doses compared with semaglutide 1 mg weekly.³

In a population without diabetes, with 40% of patients having prediabetes, weight loss percentages for the three doses were 15.0%, 19.5%, and 20.9% respectively.⁴ Discontinuation percentages due to side effects were 4%-7%. The exciting part is we now have a drug that approaches weight loss from bariatric surgery. The cardiovascular and renal outcome trials are now underway, but the enthusiasm for this drug is clear from the data.

Like other GLP1RAs, the key is to start low and go slowly. It is recommended to start tirzepatide at 2.5 mg four times a week, then increase to 5 mg. Due to gastrointestinal side effects, some patients will do better at the lower dose before increasing. For those switching from another GLP1RA, there are no data to guide us but, in my practice, I start those patients at 5 mg weekly.
 

Continuous glucose monitoring

Data continue to accumulate that this form of glycemic self-monitoring is effective to reduce HbA1c levels and minimize hypoglycemia in both type 1 and type 2 diabetes. The most important change to the 2022 American Diabetes Association (ADA) standards of care is recognizing CGM as level A evidence for those receiving basal insulin without mealtime insulin.⁵ There are four CGMs on the market, but most of the market uses the Dexcom G6 or the Libre 2. Both of these devices will be updated within the next few months to newer generation sensors.

While there are similarities and differences between the two devices, by late 2022 and early 2023 changes to both will reduce the dissimilarities.

The next generation Libre (Libre 3) will be continuous, and “scanning” will no longer be required.  For those unable to get insurance to cover CGM, the Libre will continue to be more affordable than the Dexcom. Alerts will be present on both, but the Dexcom G7 will be approved for both the arm and the abdomen. The Dexcom also can communicate with several automated insulin delivery systems and data can be shared real-time with family members.

For clinicians just starting patients on this technology, my suggestion is to focus on one system so both the provider and staff can become familiar with it. It is key to review downloaded glucose metrics, in addition to the “ambulatory glucose profile,” a graphic overview of daily glycemia where patterns can be identified. It is also helpful to ask for assistance from endocrinologists who have experience with CGMs, in addition to the representatives of the companies.

COVID-19 and new-onset diabetes

From the beginning of the COVID 19 pandemic in 2020, it was clear that stress hyperglycemia and glucose dysregulation was an important observation for those infected. What was not known at the time is that for some, the hyperglycemia continued, and permanent diabetes ensued.

In one study of over 2.7 million U.S. veterans, men infected with COVID-19, but not women, were at a higher risk of new incident diabetes at 120 days after infection compared to no infection (odds ratio for men = 2.56).⁶

Another literature review using meta-analyses and cross-sectional studies concluded new-onset diabetes following COVID-19 infection can have a varied phenotype, with no risk factors, presenting from diabetic ketoacidosis to milder forms of diabetes.⁷

The current thought is that COVID-19 binds to the ACE2 and TMPRSS2 receptors which appear to be located on the beta-cells in the islet, resulting in insulin deficiency, in addition to the insulin resistance that seems to persist after the acute infection. Much more needs to be learned about this, but clinicians need to appreciate this appears to be a new form of diabetes and optimal treatments are not yet clear.

Dr. Hirsch is an endocrinologist, professor of medicine, and diabetes treatment and teaching chair at the University of Washington, Seattle. He has received research grant support from Dexcom and Insulet and has provided consulting to Abbott, Roche, Lifescan, and GWave. You can contact him at [email protected].

References

1. American Diabetes Association Professional Practice Committee. Pharmacologic approaches to glycemic treatment: Standards of Medical Care in Diabetes-2022. Diabetes Care. 2022;45(Suppl 1):S125-S143.

2. Rosenstock J et al. Efficacy and safety of a novel GIP and GLP-1 receptor agonist tirzepatide in patients with type 2 diabetes (SURPASS-1): A double-blind, randomised, phase 3 trial. Lancet. 2021;398:143-55.

3. Frias JP et al. Tirzepatide versus semaglutide once weekly in patients with type 2 diabetes. N Engl J Med. 2021;385:503-15.

4. Jastreboff AM et al. Tirzepatide once weekly for the treatment of obesity. N Engl J Med. 2022;387:205-16.

5. American Diabetes Association Professional Practice Committee. Diabetes technology: Standards of Medical Care in Diabetes–2022. Diabetes Care. 2022;45(Suppl 1):S97-S112.

6. Wander PL et al. The incidence of diabetes in 2,777,768 veterans with and without recent SARS-CoV-2 infection. Diabetes Care 2022;45:782-8.

7. Joshi SC and Pozzilli P. COVID-19 induced diabetes: A novel presentation. Diabetes Res Clin Pract. 2022 Aug 6;191:110034.

There’s little doubt long COVID is real. The federal government recognizes long COVID as a condition and said in two reports issued in August that one in five adult COVID-19 survivors have a health condition related to their illness.

COVID-19 can damage multiple organs in the body. Sometimes this damage leads to long COVID; sometimes other reasons are at play. Doctors are beginning to sort it out.

There’s a difference between long COVID and an acute infection with lasting effects, doctors say.

“COVID itself can actually cause prolonged illness, and we don’t really call that long COVID,” said Nisha Viswanathan, MD, a doctor at UCLA Health in Los Angeles. But if symptoms extend beyond 12 weeks, that puts patients in the realm of long COVID.

Symptoms can range from mild to severe and can keep people from resuming their normal lives and jobs. Sometimes they last for months, according to the U.S. Department of Health & Human Services.
 

Multiorgan damage

Lung scarring and other lung problems are common after COVID, said Leora Horwitz, MD, an internal medicine specialist at New York University. Even after a mild case, people can have breathing issues for months, a team at Johns Hopkins Medicine, Baltimore, said in an online briefing. One study published in the journal Radiology found damage in people a full year after a COVID-19 diagnosis.

Some people have persistent heart, kidney, liver, and nervous system problems after COVID-19. A study published in 2020 in JAMA Cardiology found 60% of people who had COVID-19 had ongoing signs of heart inflammation. Nearly a third of people hospitalized for COVID-19 get kidney damage that can become chronic, and some end up needing dialysis or a transplant, said C. John Sperati, MD, a kidney specialist at Johns Hopkins Medicine.

This might be, in part, because SARS-CoV-2, the virus that causes COVID-19, directly infects the cells in many organs.

Nicole Bhave, MD, a cardiologist at University of Michigan Health, Ann Arbor is concerned that COVID-19 appears to increase the risk of heart problems in some people.

“Some of the uptick may just be recognition bias, in that people with symptoms are seeking care,” she said. “But there’s definitely a biological basis by which COVID could tip people over into a new diagnosis of heart failure.”
 

Inflammation

Inflammation is probably a key part of the long-term effects of COVID-19.

Some people have a serious immune reaction to COVID-19 called a cytokine storm, said Nitra Aggarwal Gilotra, MD, a cardiologist at Johns Hopkins Medicine. This release of inflammation-causing molecules called cytokines is meant to attack the invading virus. But it can be so severe that it wreaks havoc on healthy tissues and organs and causes lasting damage – if patients even survive it.

In some people, inflammation can affect the heart, causing myocarditis. Myocarditis symptoms include chest pain, breathlessness, and heart palpitations. Though rare, it can be serious and can raise the risk of other heart problems, including heart failure, down the line.

Long COVID may also trigger an autoimmune condition, said Eline Luning Prak, MD, PhD, a pathologist at the Hospital of the University of Pennsylvania, Philadelphia. Long COVID can share many hallmark symptoms with autoimmune diseases, including fatigue, widespread pain, memory problems, and mood disorders.
 

Blood clots

Studies have shown the overcharged inflammatory response to COVID-19 can cause blood clots. This sometimes overwhelming clotting was an early hallmark of COVID-19 infection, and when clots restrict blood flow in the brain, lungs, kidneys, or limbs, they can cause long-term damage. Some can be deadly. Researchers in Sweden found patients were at risk of deep vein thrombosis – a blood clot usually in the leg – up to 3 months after infection and at higher risk of a blood clot in the lung, called pulmonary embolism, for as long as 3 months.

Viral reservoirs

The virus itself may also linger in a patient’s body, causing continued symptoms and, potentially, new flare-ups. Zoe Swank, PhD, of Harvard Medical School, Boston, and colleagues reported in a preprint study that they found pieces of the SARS-CoV-2 virus in the blood of most patients with long COVID symptoms they tested – some as long as a year after infection. The study has not yet been peer reviewed.

Another team found evidence of the virus in stool up to 7 months later, which suggests the virus hides out in the gut. Other early studies have found bits of viral RNA in the appendix, breast tissue, heart, eyes, and brain.
 

Diabetes

Diabetes is a risk factor for getting severe COVID-19, and multiple studies have shown people can get diabetes both while battling infection and afterward. One study of veterans, published in The Lancet Diabetes and Endocrinology, found COVID-19 survivors were about 40% more likely to get diabetes over the next year.

There are a few ways this might happen. Insulin-producing cells in the pancreas have SARS-CoV-2 receptors – a type of molecular doorway the coronavirus can attach to. Damage to these cells could make the body less able to produce insulin, which in turn can lead to diabetes. The virus could also disrupt the balance in the body or cause inflammation that leads to insulin resistance, which can develop into diabetes, Ziad Al-Aly, MD, of the Veterans Affairs St. Louis Health Care System, and colleagues wrote.
 

Nervous system issues

People who get COVID-19 are also more vulnerable to postural orthostatic tachycardia syndrome (POTS). This affects what’s known as the autonomic nervous system, which regulates blood circulation, and includes those things that happen in your body without your having to think about them, like breathing, heartbeat, and digestion. POTS can cause common long COVID neurologic symptoms, including headaches, fatigue, brain fog, insomnia, and problems thinking and concentrating. “This was a known condition prior to COVID, but it was incredibly rare,” said Dr. Viswanathan. “After COVID, I’ve seen it with increasing frequency.”

Long-term outlook

Lasting issues after COVID-19 are much more likely after a moderate or severe infection. Still, plenty of people are battling them even after a mild illness. “As for why, that’s the billion-dollar question,” said Dr. Horwitz. “It’s well known that viral infections can cause long-term dysregulation. Why that is, we really just don’t know.”

Whether it’s virus hiding out in the body, long-term organ damage, or an autoimmune reaction likely differs from person to person. “I’m believing, increasingly, that it’s a combination of all of these, just based on how different patients are responding to different medications,” said Dr. Viswanathan. “One patient will respond to something beautifully, and another patient won’t at all.”

But it’s clear a significant number of people are facing long-term health struggles because of COVID-19, which has infected at least 580 million people globally and 92 million – likely many more – in the United States, according to Johns Hopkins University.

Even a small increased risk of conditions like heart disease or diabetes translates to a huge number of people, Dr. Horwitz said. “If even 1% of people getting COVID have long-term symptoms, that’s a major public health crisis, because that’s 1% of pretty much everybody in the country.”

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

There’s little doubt long COVID is real. The federal government recognizes long COVID as a condition and said in two reports issued in August that one in five adult COVID-19 survivors have a health condition related to their illness.

COVID-19 can damage multiple organs in the body. Sometimes this damage leads to long COVID; sometimes other reasons are at play. Doctors are beginning to sort it out.

There’s a difference between long COVID and an acute infection with lasting effects, doctors say.

“COVID itself can actually cause prolonged illness, and we don’t really call that long COVID,” said Nisha Viswanathan, MD, a doctor at UCLA Health in Los Angeles. But if symptoms extend beyond 12 weeks, that puts patients in the realm of long COVID.

Symptoms can range from mild to severe and can keep people from resuming their normal lives and jobs. Sometimes they last for months, according to the U.S. Department of Health & Human Services.
 

Multiorgan damage

Lung scarring and other lung problems are common after COVID, said Leora Horwitz, MD, an internal medicine specialist at New York University. Even after a mild case, people can have breathing issues for months, a team at Johns Hopkins Medicine, Baltimore, said in an online briefing. One study published in the journal Radiology found damage in people a full year after a COVID-19 diagnosis.

Some people have persistent heart, kidney, liver, and nervous system problems after COVID-19. A study published in 2020 in JAMA Cardiology found 60% of people who had COVID-19 had ongoing signs of heart inflammation. Nearly a third of people hospitalized for COVID-19 get kidney damage that can become chronic, and some end up needing dialysis or a transplant, said C. John Sperati, MD, a kidney specialist at Johns Hopkins Medicine.

This might be, in part, because SARS-CoV-2, the virus that causes COVID-19, directly infects the cells in many organs.

Nicole Bhave, MD, a cardiologist at University of Michigan Health, Ann Arbor is concerned that COVID-19 appears to increase the risk of heart problems in some people.

“Some of the uptick may just be recognition bias, in that people with symptoms are seeking care,” she said. “But there’s definitely a biological basis by which COVID could tip people over into a new diagnosis of heart failure.”
 

Inflammation

Inflammation is probably a key part of the long-term effects of COVID-19.

Some people have a serious immune reaction to COVID-19 called a cytokine storm, said Nitra Aggarwal Gilotra, MD, a cardiologist at Johns Hopkins Medicine. This release of inflammation-causing molecules called cytokines is meant to attack the invading virus. But it can be so severe that it wreaks havoc on healthy tissues and organs and causes lasting damage – if patients even survive it.

In some people, inflammation can affect the heart, causing myocarditis. Myocarditis symptoms include chest pain, breathlessness, and heart palpitations. Though rare, it can be serious and can raise the risk of other heart problems, including heart failure, down the line.

Long COVID may also trigger an autoimmune condition, said Eline Luning Prak, MD, PhD, a pathologist at the Hospital of the University of Pennsylvania, Philadelphia. Long COVID can share many hallmark symptoms with autoimmune diseases, including fatigue, widespread pain, memory problems, and mood disorders.
 

Blood clots

Studies have shown the overcharged inflammatory response to COVID-19 can cause blood clots. This sometimes overwhelming clotting was an early hallmark of COVID-19 infection, and when clots restrict blood flow in the brain, lungs, kidneys, or limbs, they can cause long-term damage. Some can be deadly. Researchers in Sweden found patients were at risk of deep vein thrombosis – a blood clot usually in the leg – up to 3 months after infection and at higher risk of a blood clot in the lung, called pulmonary embolism, for as long as 3 months.

Viral reservoirs

The virus itself may also linger in a patient’s body, causing continued symptoms and, potentially, new flare-ups. Zoe Swank, PhD, of Harvard Medical School, Boston, and colleagues reported in a preprint study that they found pieces of the SARS-CoV-2 virus in the blood of most patients with long COVID symptoms they tested – some as long as a year after infection. The study has not yet been peer reviewed.

Another team found evidence of the virus in stool up to 7 months later, which suggests the virus hides out in the gut. Other early studies have found bits of viral RNA in the appendix, breast tissue, heart, eyes, and brain.
 

Diabetes

Diabetes is a risk factor for getting severe COVID-19, and multiple studies have shown people can get diabetes both while battling infection and afterward. One study of veterans, published in The Lancet Diabetes and Endocrinology, found COVID-19 survivors were about 40% more likely to get diabetes over the next year.

There are a few ways this might happen. Insulin-producing cells in the pancreas have SARS-CoV-2 receptors – a type of molecular doorway the coronavirus can attach to. Damage to these cells could make the body less able to produce insulin, which in turn can lead to diabetes. The virus could also disrupt the balance in the body or cause inflammation that leads to insulin resistance, which can develop into diabetes, Ziad Al-Aly, MD, of the Veterans Affairs St. Louis Health Care System, and colleagues wrote.
 

Nervous system issues

People who get COVID-19 are also more vulnerable to postural orthostatic tachycardia syndrome (POTS). This affects what’s known as the autonomic nervous system, which regulates blood circulation, and includes those things that happen in your body without your having to think about them, like breathing, heartbeat, and digestion. POTS can cause common long COVID neurologic symptoms, including headaches, fatigue, brain fog, insomnia, and problems thinking and concentrating. “This was a known condition prior to COVID, but it was incredibly rare,” said Dr. Viswanathan. “After COVID, I’ve seen it with increasing frequency.”

Long-term outlook

Lasting issues after COVID-19 are much more likely after a moderate or severe infection. Still, plenty of people are battling them even after a mild illness. “As for why, that’s the billion-dollar question,” said Dr. Horwitz. “It’s well known that viral infections can cause long-term dysregulation. Why that is, we really just don’t know.”

Whether it’s virus hiding out in the body, long-term organ damage, or an autoimmune reaction likely differs from person to person. “I’m believing, increasingly, that it’s a combination of all of these, just based on how different patients are responding to different medications,” said Dr. Viswanathan. “One patient will respond to something beautifully, and another patient won’t at all.”

But it’s clear a significant number of people are facing long-term health struggles because of COVID-19, which has infected at least 580 million people globally and 92 million – likely many more – in the United States, according to Johns Hopkins University.

Even a small increased risk of conditions like heart disease or diabetes translates to a huge number of people, Dr. Horwitz said. “If even 1% of people getting COVID have long-term symptoms, that’s a major public health crisis, because that’s 1% of pretty much everybody in the country.”

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

There’s little doubt long COVID is real. The federal government recognizes long COVID as a condition and said in two reports issued in August that one in five adult COVID-19 survivors have a health condition related to their illness.

COVID-19 can damage multiple organs in the body. Sometimes this damage leads to long COVID; sometimes other reasons are at play. Doctors are beginning to sort it out.

There’s a difference between long COVID and an acute infection with lasting effects, doctors say.

“COVID itself can actually cause prolonged illness, and we don’t really call that long COVID,” said Nisha Viswanathan, MD, a doctor at UCLA Health in Los Angeles. But if symptoms extend beyond 12 weeks, that puts patients in the realm of long COVID.

Symptoms can range from mild to severe and can keep people from resuming their normal lives and jobs. Sometimes they last for months, according to the U.S. Department of Health & Human Services.
 

Multiorgan damage

Lung scarring and other lung problems are common after COVID, said Leora Horwitz, MD, an internal medicine specialist at New York University. Even after a mild case, people can have breathing issues for months, a team at Johns Hopkins Medicine, Baltimore, said in an online briefing. One study published in the journal Radiology found damage in people a full year after a COVID-19 diagnosis.

Some people have persistent heart, kidney, liver, and nervous system problems after COVID-19. A study published in 2020 in JAMA Cardiology found 60% of people who had COVID-19 had ongoing signs of heart inflammation. Nearly a third of people hospitalized for COVID-19 get kidney damage that can become chronic, and some end up needing dialysis or a transplant, said C. John Sperati, MD, a kidney specialist at Johns Hopkins Medicine.

This might be, in part, because SARS-CoV-2, the virus that causes COVID-19, directly infects the cells in many organs.

Nicole Bhave, MD, a cardiologist at University of Michigan Health, Ann Arbor is concerned that COVID-19 appears to increase the risk of heart problems in some people.

“Some of the uptick may just be recognition bias, in that people with symptoms are seeking care,” she said. “But there’s definitely a biological basis by which COVID could tip people over into a new diagnosis of heart failure.”
 

Inflammation

Inflammation is probably a key part of the long-term effects of COVID-19.

Some people have a serious immune reaction to COVID-19 called a cytokine storm, said Nitra Aggarwal Gilotra, MD, a cardiologist at Johns Hopkins Medicine. This release of inflammation-causing molecules called cytokines is meant to attack the invading virus. But it can be so severe that it wreaks havoc on healthy tissues and organs and causes lasting damage – if patients even survive it.

In some people, inflammation can affect the heart, causing myocarditis. Myocarditis symptoms include chest pain, breathlessness, and heart palpitations. Though rare, it can be serious and can raise the risk of other heart problems, including heart failure, down the line.

Long COVID may also trigger an autoimmune condition, said Eline Luning Prak, MD, PhD, a pathologist at the Hospital of the University of Pennsylvania, Philadelphia. Long COVID can share many hallmark symptoms with autoimmune diseases, including fatigue, widespread pain, memory problems, and mood disorders.
 

Blood clots

Studies have shown the overcharged inflammatory response to COVID-19 can cause blood clots. This sometimes overwhelming clotting was an early hallmark of COVID-19 infection, and when clots restrict blood flow in the brain, lungs, kidneys, or limbs, they can cause long-term damage. Some can be deadly. Researchers in Sweden found patients were at risk of deep vein thrombosis – a blood clot usually in the leg – up to 3 months after infection and at higher risk of a blood clot in the lung, called pulmonary embolism, for as long as 3 months.

Viral reservoirs

The virus itself may also linger in a patient’s body, causing continued symptoms and, potentially, new flare-ups. Zoe Swank, PhD, of Harvard Medical School, Boston, and colleagues reported in a preprint study that they found pieces of the SARS-CoV-2 virus in the blood of most patients with long COVID symptoms they tested – some as long as a year after infection. The study has not yet been peer reviewed.

Another team found evidence of the virus in stool up to 7 months later, which suggests the virus hides out in the gut. Other early studies have found bits of viral RNA in the appendix, breast tissue, heart, eyes, and brain.
 

Diabetes

Diabetes is a risk factor for getting severe COVID-19, and multiple studies have shown people can get diabetes both while battling infection and afterward. One study of veterans, published in The Lancet Diabetes and Endocrinology, found COVID-19 survivors were about 40% more likely to get diabetes over the next year.

There are a few ways this might happen. Insulin-producing cells in the pancreas have SARS-CoV-2 receptors – a type of molecular doorway the coronavirus can attach to. Damage to these cells could make the body less able to produce insulin, which in turn can lead to diabetes. The virus could also disrupt the balance in the body or cause inflammation that leads to insulin resistance, which can develop into diabetes, Ziad Al-Aly, MD, of the Veterans Affairs St. Louis Health Care System, and colleagues wrote.
 

Nervous system issues

People who get COVID-19 are also more vulnerable to postural orthostatic tachycardia syndrome (POTS). This affects what’s known as the autonomic nervous system, which regulates blood circulation, and includes those things that happen in your body without your having to think about them, like breathing, heartbeat, and digestion. POTS can cause common long COVID neurologic symptoms, including headaches, fatigue, brain fog, insomnia, and problems thinking and concentrating. “This was a known condition prior to COVID, but it was incredibly rare,” said Dr. Viswanathan. “After COVID, I’ve seen it with increasing frequency.”

Long-term outlook

Lasting issues after COVID-19 are much more likely after a moderate or severe infection. Still, plenty of people are battling them even after a mild illness. “As for why, that’s the billion-dollar question,” said Dr. Horwitz. “It’s well known that viral infections can cause long-term dysregulation. Why that is, we really just don’t know.”

Whether it’s virus hiding out in the body, long-term organ damage, or an autoimmune reaction likely differs from person to person. “I’m believing, increasingly, that it’s a combination of all of these, just based on how different patients are responding to different medications,” said Dr. Viswanathan. “One patient will respond to something beautifully, and another patient won’t at all.”

But it’s clear a significant number of people are facing long-term health struggles because of COVID-19, which has infected at least 580 million people globally and 92 million – likely many more – in the United States, according to Johns Hopkins University.

Even a small increased risk of conditions like heart disease or diabetes translates to a huge number of people, Dr. Horwitz said. “If even 1% of people getting COVID have long-term symptoms, that’s a major public health crisis, because that’s 1% of pretty much everybody in the country.”

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

Most people with Omicron likely don’t know it.

That’s according to a study in JAMA Network Open, which says 56% of people who have the Omicron variant of the coronavirus are unaware of their infection.

And it has an upside and a downside, depending on how you look at it, according to Time magazine.

“It’s good news, in some ways, since it underscores the fact that Omicron tends to cause relatively mild symptoms (or no symptoms at all) in vaccinated people,” Time says. “The downside is that many people are likely spreading the virus unintentionally.”

The study looked at 210 hospital patients and employees in the Los Angeles area. More than half who tested positive didn’t know it – because they had no symptoms, or they assumed they merely had a cold or allergies.

“The findings support early data from around the world suggesting that throughout the pandemic, anywhere from 25% to 40% of SARS-CoV-2 infections have been asymptomatic, which presents challenges for public health officials trying to control the spread of the virus,” Time reports.

The study found that awareness of infection rose after at-home tests became available this year. About three-quarters of people in January and February didn’t know their status, for example.

“Findings of this study suggest that low rates of Omicron variant infection awareness may be a key contributor to rapid transmission of the virus within communities,” the authors wrote. “Given that unawareness of active infection precludes self-initiated interventions, such as testing and self-isolation, even modest levels of undiagnosed infection can contribute to substantial population-level transmission.”

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

Most people with Omicron likely don’t know it.

That’s according to a study in JAMA Network Open, which says 56% of people who have the Omicron variant of the coronavirus are unaware of their infection.

And it has an upside and a downside, depending on how you look at it, according to Time magazine.

“It’s good news, in some ways, since it underscores the fact that Omicron tends to cause relatively mild symptoms (or no symptoms at all) in vaccinated people,” Time says. “The downside is that many people are likely spreading the virus unintentionally.”

The study looked at 210 hospital patients and employees in the Los Angeles area. More than half who tested positive didn’t know it – because they had no symptoms, or they assumed they merely had a cold or allergies.

“The findings support early data from around the world suggesting that throughout the pandemic, anywhere from 25% to 40% of SARS-CoV-2 infections have been asymptomatic, which presents challenges for public health officials trying to control the spread of the virus,” Time reports.

The study found that awareness of infection rose after at-home tests became available this year. About three-quarters of people in January and February didn’t know their status, for example.

“Findings of this study suggest that low rates of Omicron variant infection awareness may be a key contributor to rapid transmission of the virus within communities,” the authors wrote. “Given that unawareness of active infection precludes self-initiated interventions, such as testing and self-isolation, even modest levels of undiagnosed infection can contribute to substantial population-level transmission.”

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

Most people with Omicron likely don’t know it.

That’s according to a study in JAMA Network Open, which says 56% of people who have the Omicron variant of the coronavirus are unaware of their infection.

And it has an upside and a downside, depending on how you look at it, according to Time magazine.

“It’s good news, in some ways, since it underscores the fact that Omicron tends to cause relatively mild symptoms (or no symptoms at all) in vaccinated people,” Time says. “The downside is that many people are likely spreading the virus unintentionally.”

The study looked at 210 hospital patients and employees in the Los Angeles area. More than half who tested positive didn’t know it – because they had no symptoms, or they assumed they merely had a cold or allergies.

“The findings support early data from around the world suggesting that throughout the pandemic, anywhere from 25% to 40% of SARS-CoV-2 infections have been asymptomatic, which presents challenges for public health officials trying to control the spread of the virus,” Time reports.

The study found that awareness of infection rose after at-home tests became available this year. About three-quarters of people in January and February didn’t know their status, for example.

“Findings of this study suggest that low rates of Omicron variant infection awareness may be a key contributor to rapid transmission of the virus within communities,” the authors wrote. “Given that unawareness of active infection precludes self-initiated interventions, such as testing and self-isolation, even modest levels of undiagnosed infection can contribute to substantial population-level transmission.”

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