Carolyn Crist

People who build up high levels of immune cells from coronaviruses that cause the common cold could have some protection against COVID-19, according to a small study published Jan. 10 in Nature Communications.

Previous studies have shown that T cells created from other coronaviruses can recognize SARS-CoV-2, the virus that causes COVID-19. In the new study, researchers at Imperial College London found that the presence of these T cells at the time of COVID-19 exposure could reduce the chance of getting infected.

The findings could provide a blueprint for a second-generation, universal vaccine to prevent infection from COVID-19 variants, including Omicron and ones that crop up later.

“Being exposed to SARS-CoV-2 virus doesn’t always result in infection, and we’ve been keen to understand why,” Rhia Kundu, PhD, the lead study author from Imperial’s National Heart and Lung Institute, said in a statement.

People with higher levels of T cells from the common cold were less likely to become infected with COVID-19, the researchers found.

“While this is an important discovery, it is only one form of protection, and I would stress that no one should rely on this alone,” Dr. Kundu said. “Instead, the best way to protect yourself against COVID-19 is to be fully vaccinated, including getting your booster dose.”

For the study, Dr. Kundu and colleagues analyzed blood samples from 52 people who lived with someone with confirmed COVID-19 in September 2020. Among the 26 people who didn’t contract COVID-19, there were “significantly higher levels” of preexisting T cells from common cold coronaviruses, as compared with the 26 people who did become infected.

The T cells researched in the study are considered “cross-reactive” and can recognize the proteins of SARS-CoV-2. They offer protection by targeting proteins inside the SARS-CoV-2 virus, rather than the spike proteins on the surface that allow the virus to invade cells.

The current COVID-19 vaccines target the spike proteins, which are more likely to mutate than internal proteins, the researchers wrote. The Omicron variant, for instance, has numerous mutations on spike proteins that may allow it to evade vaccines.

The data suggest that the next step of COVID-19 vaccine development could focus on internal proteins, the researchers said, which could provide lasting protection because T-cell responses persist longer than antibody responses that fade within a few months of vaccination.

“New vaccines that include these conserved, internal proteins would therefore induce broadly protective T-cell responses that should protect against current and future SARS-CoV-2 variants,” Ajit Lalvani, MD, the senior study author and director of Imperial’s respiratory infections health protection research unit, said in the statement.

But more research is needed, the authors said, noting that the study had a small sample size and lacked ethnic diversity, which puts limits on the research.

A version of this article first appeared on WebMD.com

People who build up high levels of immune cells from coronaviruses that cause the common cold could have some protection against COVID-19, according to a small study published Jan. 10 in Nature Communications.

Previous studies have shown that T cells created from other coronaviruses can recognize SARS-CoV-2, the virus that causes COVID-19. In the new study, researchers at Imperial College London found that the presence of these T cells at the time of COVID-19 exposure could reduce the chance of getting infected.

The findings could provide a blueprint for a second-generation, universal vaccine to prevent infection from COVID-19 variants, including Omicron and ones that crop up later.

“Being exposed to SARS-CoV-2 virus doesn’t always result in infection, and we’ve been keen to understand why,” Rhia Kundu, PhD, the lead study author from Imperial’s National Heart and Lung Institute, said in a statement.

People with higher levels of T cells from the common cold were less likely to become infected with COVID-19, the researchers found.

“While this is an important discovery, it is only one form of protection, and I would stress that no one should rely on this alone,” Dr. Kundu said. “Instead, the best way to protect yourself against COVID-19 is to be fully vaccinated, including getting your booster dose.”

For the study, Dr. Kundu and colleagues analyzed blood samples from 52 people who lived with someone with confirmed COVID-19 in September 2020. Among the 26 people who didn’t contract COVID-19, there were “significantly higher levels” of preexisting T cells from common cold coronaviruses, as compared with the 26 people who did become infected.

The T cells researched in the study are considered “cross-reactive” and can recognize the proteins of SARS-CoV-2. They offer protection by targeting proteins inside the SARS-CoV-2 virus, rather than the spike proteins on the surface that allow the virus to invade cells.

The current COVID-19 vaccines target the spike proteins, which are more likely to mutate than internal proteins, the researchers wrote. The Omicron variant, for instance, has numerous mutations on spike proteins that may allow it to evade vaccines.

The data suggest that the next step of COVID-19 vaccine development could focus on internal proteins, the researchers said, which could provide lasting protection because T-cell responses persist longer than antibody responses that fade within a few months of vaccination.

“New vaccines that include these conserved, internal proteins would therefore induce broadly protective T-cell responses that should protect against current and future SARS-CoV-2 variants,” Ajit Lalvani, MD, the senior study author and director of Imperial’s respiratory infections health protection research unit, said in the statement.

But more research is needed, the authors said, noting that the study had a small sample size and lacked ethnic diversity, which puts limits on the research.

A version of this article first appeared on WebMD.com

People who build up high levels of immune cells from coronaviruses that cause the common cold could have some protection against COVID-19, according to a small study published Jan. 10 in Nature Communications.

Previous studies have shown that T cells created from other coronaviruses can recognize SARS-CoV-2, the virus that causes COVID-19. In the new study, researchers at Imperial College London found that the presence of these T cells at the time of COVID-19 exposure could reduce the chance of getting infected.

The findings could provide a blueprint for a second-generation, universal vaccine to prevent infection from COVID-19 variants, including Omicron and ones that crop up later.

“Being exposed to SARS-CoV-2 virus doesn’t always result in infection, and we’ve been keen to understand why,” Rhia Kundu, PhD, the lead study author from Imperial’s National Heart and Lung Institute, said in a statement.

People with higher levels of T cells from the common cold were less likely to become infected with COVID-19, the researchers found.

“While this is an important discovery, it is only one form of protection, and I would stress that no one should rely on this alone,” Dr. Kundu said. “Instead, the best way to protect yourself against COVID-19 is to be fully vaccinated, including getting your booster dose.”

For the study, Dr. Kundu and colleagues analyzed blood samples from 52 people who lived with someone with confirmed COVID-19 in September 2020. Among the 26 people who didn’t contract COVID-19, there were “significantly higher levels” of preexisting T cells from common cold coronaviruses, as compared with the 26 people who did become infected.

The T cells researched in the study are considered “cross-reactive” and can recognize the proteins of SARS-CoV-2. They offer protection by targeting proteins inside the SARS-CoV-2 virus, rather than the spike proteins on the surface that allow the virus to invade cells.

The current COVID-19 vaccines target the spike proteins, which are more likely to mutate than internal proteins, the researchers wrote. The Omicron variant, for instance, has numerous mutations on spike proteins that may allow it to evade vaccines.

The data suggest that the next step of COVID-19 vaccine development could focus on internal proteins, the researchers said, which could provide lasting protection because T-cell responses persist longer than antibody responses that fade within a few months of vaccination.

“New vaccines that include these conserved, internal proteins would therefore induce broadly protective T-cell responses that should protect against current and future SARS-CoV-2 variants,” Ajit Lalvani, MD, the senior study author and director of Imperial’s respiratory infections health protection research unit, said in the statement.

But more research is needed, the authors said, noting that the study had a small sample size and lacked ethnic diversity, which puts limits on the research.

A version of this article first appeared on WebMD.com

The United States reported 1.35 million new COVID-19 cases on Jan. 10, logging the highest daily total for any country in the world during the pandemic.

The United States set the previous record of 1 million cases on Jan. 3. (A large number of cases are reported on Mondays, since many states don’t provide updates over the weekend, according to Reuters.)

Still, the 7-day average for new cases has surpassed 700,000, tripling in 2 weeks as the contagious Omicron variant continues to spread across the country.

The daily record of new cases came a day after the United States crossed the grim milestone of 60 million COVID-19 cases during the pandemic, according to the latest data from Johns Hopkins University. More than 11 million new cases were reported in the past 28 days, with 5 million reported since Jan. 2.

Globally, more than 310 million cases have been reported, resulting in nearly 5.5 million COVID-19 deaths. Almost 40 million cases have been confirmed worldwide during the past month, with the United States accounting for 28% of those.

Texas became the second state to report more than 5 million cases since the pandemic began, behind California’s total of 6 million cases. Florida has reported more than 4.6 million, while New York has reported more than 4.1 million.

The United States has also hit an all-time high for hospitalizations, with nearly 146,000 COVID-19 patients in hospitals across the country, according to the latest data from the U.S. Department of Health and Human Services. The previous record was 142,000 hospitalizations in January 2021.

Jan. 11’s hospitalizations are more than twice as many as 2 weeks ago, according to CNN. About 78% of inpatient beds are in use nationwide, and 21% are being used for COVID-19 patients.

Deaths are averaging about 1,700 per day, Reuters reported, which is up from 1,400 in recent days but not much higher than earlier this winter. The peak average was 3,400 daily deaths in mid-January 2021.

The surging numbers of cases and hospitalizations across the country are straining hospitals. On Jan. 10, Virginia Gov. Ralph Northam declared a state of emergency after the number of intensive care unit hospitalizations more than doubled since Dec. 1, CNN reported. The order allows hospitals to expand bed capacity, use telehealth options, and be more flexible with staffing.

Texas is hiring at least 2,700 medical staff to help with the surge, CNN reported, and Kentucky has mobilized the National Guard to provide support.

“Omicron continues to burn through the commonwealth, growing at levels we have never seen before. Omicron is significantly more contagious than even the Delta variant,” Kentucky Gov. Andy Beshear said during a news briefing Jan. 10.

Kentucky reported its highest weekly total of cases last week and has its highest rate of positive tests, at 26%. Mr. Beshear said the state is down to 134 available adult ICU beds.

“If it spreads at the rate we are seeing, it is certainly going to fill up our hospitals,” he said.

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

The United States reported 1.35 million new COVID-19 cases on Jan. 10, logging the highest daily total for any country in the world during the pandemic.

The United States set the previous record of 1 million cases on Jan. 3. (A large number of cases are reported on Mondays, since many states don’t provide updates over the weekend, according to Reuters.)

Still, the 7-day average for new cases has surpassed 700,000, tripling in 2 weeks as the contagious Omicron variant continues to spread across the country.

The daily record of new cases came a day after the United States crossed the grim milestone of 60 million COVID-19 cases during the pandemic, according to the latest data from Johns Hopkins University. More than 11 million new cases were reported in the past 28 days, with 5 million reported since Jan. 2.

Globally, more than 310 million cases have been reported, resulting in nearly 5.5 million COVID-19 deaths. Almost 40 million cases have been confirmed worldwide during the past month, with the United States accounting for 28% of those.

Texas became the second state to report more than 5 million cases since the pandemic began, behind California’s total of 6 million cases. Florida has reported more than 4.6 million, while New York has reported more than 4.1 million.

The United States has also hit an all-time high for hospitalizations, with nearly 146,000 COVID-19 patients in hospitals across the country, according to the latest data from the U.S. Department of Health and Human Services. The previous record was 142,000 hospitalizations in January 2021.

Jan. 11’s hospitalizations are more than twice as many as 2 weeks ago, according to CNN. About 78% of inpatient beds are in use nationwide, and 21% are being used for COVID-19 patients.

Deaths are averaging about 1,700 per day, Reuters reported, which is up from 1,400 in recent days but not much higher than earlier this winter. The peak average was 3,400 daily deaths in mid-January 2021.

The surging numbers of cases and hospitalizations across the country are straining hospitals. On Jan. 10, Virginia Gov. Ralph Northam declared a state of emergency after the number of intensive care unit hospitalizations more than doubled since Dec. 1, CNN reported. The order allows hospitals to expand bed capacity, use telehealth options, and be more flexible with staffing.

Texas is hiring at least 2,700 medical staff to help with the surge, CNN reported, and Kentucky has mobilized the National Guard to provide support.

“Omicron continues to burn through the commonwealth, growing at levels we have never seen before. Omicron is significantly more contagious than even the Delta variant,” Kentucky Gov. Andy Beshear said during a news briefing Jan. 10.

Kentucky reported its highest weekly total of cases last week and has its highest rate of positive tests, at 26%. Mr. Beshear said the state is down to 134 available adult ICU beds.

“If it spreads at the rate we are seeing, it is certainly going to fill up our hospitals,” he said.

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

The United States reported 1.35 million new COVID-19 cases on Jan. 10, logging the highest daily total for any country in the world during the pandemic.

The United States set the previous record of 1 million cases on Jan. 3. (A large number of cases are reported on Mondays, since many states don’t provide updates over the weekend, according to Reuters.)

Still, the 7-day average for new cases has surpassed 700,000, tripling in 2 weeks as the contagious Omicron variant continues to spread across the country.

The daily record of new cases came a day after the United States crossed the grim milestone of 60 million COVID-19 cases during the pandemic, according to the latest data from Johns Hopkins University. More than 11 million new cases were reported in the past 28 days, with 5 million reported since Jan. 2.

Globally, more than 310 million cases have been reported, resulting in nearly 5.5 million COVID-19 deaths. Almost 40 million cases have been confirmed worldwide during the past month, with the United States accounting for 28% of those.

Texas became the second state to report more than 5 million cases since the pandemic began, behind California’s total of 6 million cases. Florida has reported more than 4.6 million, while New York has reported more than 4.1 million.

The United States has also hit an all-time high for hospitalizations, with nearly 146,000 COVID-19 patients in hospitals across the country, according to the latest data from the U.S. Department of Health and Human Services. The previous record was 142,000 hospitalizations in January 2021.

Jan. 11’s hospitalizations are more than twice as many as 2 weeks ago, according to CNN. About 78% of inpatient beds are in use nationwide, and 21% are being used for COVID-19 patients.

Deaths are averaging about 1,700 per day, Reuters reported, which is up from 1,400 in recent days but not much higher than earlier this winter. The peak average was 3,400 daily deaths in mid-January 2021.

The surging numbers of cases and hospitalizations across the country are straining hospitals. On Jan. 10, Virginia Gov. Ralph Northam declared a state of emergency after the number of intensive care unit hospitalizations more than doubled since Dec. 1, CNN reported. The order allows hospitals to expand bed capacity, use telehealth options, and be more flexible with staffing.

Texas is hiring at least 2,700 medical staff to help with the surge, CNN reported, and Kentucky has mobilized the National Guard to provide support.

“Omicron continues to burn through the commonwealth, growing at levels we have never seen before. Omicron is significantly more contagious than even the Delta variant,” Kentucky Gov. Andy Beshear said during a news briefing Jan. 10.

Kentucky reported its highest weekly total of cases last week and has its highest rate of positive tests, at 26%. Mr. Beshear said the state is down to 134 available adult ICU beds.

“If it spreads at the rate we are seeing, it is certainly going to fill up our hospitals,” he said.

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

Some Americans with a weakened immune system who face high risks for severe COVID-19 become eligible this week to receive a fourth dose of a coronavirus vaccine.

The Centers for Disease Control and Prevention endorsed a third dose of the Pfizer or Moderna vaccines  for moderately and severely immunocompromised people on Aug. 13, which is considered part of their first immunization series rather than a booster shot.

In October, the CDC said moderately and severely immunocompromised people could receive a booster shot, or a fourth dose of the vaccine , 6 months after their third dose.

But the CDC last week shortened the timeline to 5 months for a booster shot of the Pfizer or Moderna vaccines. That means immunocompromised people could begin signing up for a fourth shot later this week, the New York Times reported.

About 2.7% of U.S. adults, or about 7 million adults, are considered immunocompromised, according to the CDC. They’re more likely to contract severe COVID-19, have a higher risk for long COVID, have lower antibody levels after vaccination, and develop serious breakthrough infections. About 40% of hospitalized breakthrough cases are among immunocompromised people.

According to  CDC guidance, people are considered to be “moderately or severely immunocompromised” if they have:

• Active cancer treatment for tumors or cancers of the blood
• Had an organ transplant and are taking medicine to suppress the immune system
• Had a stem cell transplant in the last 2 years and are taking medicine to suppress the immune system
• Advanced or untreated HIV infection
• Moderate or severe primary immunodeficiency, such as DiGeorge syndrome or Wiskott-Aldrich syndrome
• Active treatment with high-dose corticosteroids or other drugs that suppress the immune response

So far, only moderately and severely immunocompromised Americans are eligible for a fourth shot. Israel has begun offering fourth doses to high-risk groups, including older adults, but the Biden administration hasn’t yet said whether the United States will follow, the Times reported.

Overall, the focus remains on getting third shots to Americans who are eligible for boosters, Rochelle Walensky, MD, the CDC director, told reporters Jan. 7. U.S. officials will remain in touch with Israel to follow their data on fourth shots.

“We will be following our own data carefully as well, to see how these boosters are working in terms of waning effectiveness, not just for infection but, importantly, for severe disease,” she said.

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

Some Americans with a weakened immune system who face high risks for severe COVID-19 become eligible this week to receive a fourth dose of a coronavirus vaccine.

The Centers for Disease Control and Prevention endorsed a third dose of the Pfizer or Moderna vaccines  for moderately and severely immunocompromised people on Aug. 13, which is considered part of their first immunization series rather than a booster shot.

In October, the CDC said moderately and severely immunocompromised people could receive a booster shot, or a fourth dose of the vaccine , 6 months after their third dose.

But the CDC last week shortened the timeline to 5 months for a booster shot of the Pfizer or Moderna vaccines. That means immunocompromised people could begin signing up for a fourth shot later this week, the New York Times reported.

About 2.7% of U.S. adults, or about 7 million adults, are considered immunocompromised, according to the CDC. They’re more likely to contract severe COVID-19, have a higher risk for long COVID, have lower antibody levels after vaccination, and develop serious breakthrough infections. About 40% of hospitalized breakthrough cases are among immunocompromised people.

According to  CDC guidance, people are considered to be “moderately or severely immunocompromised” if they have:

• Active cancer treatment for tumors or cancers of the blood
• Had an organ transplant and are taking medicine to suppress the immune system
• Had a stem cell transplant in the last 2 years and are taking medicine to suppress the immune system
• Advanced or untreated HIV infection
• Moderate or severe primary immunodeficiency, such as DiGeorge syndrome or Wiskott-Aldrich syndrome
• Active treatment with high-dose corticosteroids or other drugs that suppress the immune response

So far, only moderately and severely immunocompromised Americans are eligible for a fourth shot. Israel has begun offering fourth doses to high-risk groups, including older adults, but the Biden administration hasn’t yet said whether the United States will follow, the Times reported.

Overall, the focus remains on getting third shots to Americans who are eligible for boosters, Rochelle Walensky, MD, the CDC director, told reporters Jan. 7. U.S. officials will remain in touch with Israel to follow their data on fourth shots.

“We will be following our own data carefully as well, to see how these boosters are working in terms of waning effectiveness, not just for infection but, importantly, for severe disease,” she said.

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

Some Americans with a weakened immune system who face high risks for severe COVID-19 become eligible this week to receive a fourth dose of a coronavirus vaccine.

The Centers for Disease Control and Prevention endorsed a third dose of the Pfizer or Moderna vaccines  for moderately and severely immunocompromised people on Aug. 13, which is considered part of their first immunization series rather than a booster shot.

In October, the CDC said moderately and severely immunocompromised people could receive a booster shot, or a fourth dose of the vaccine , 6 months after their third dose.

But the CDC last week shortened the timeline to 5 months for a booster shot of the Pfizer or Moderna vaccines. That means immunocompromised people could begin signing up for a fourth shot later this week, the New York Times reported.

About 2.7% of U.S. adults, or about 7 million adults, are considered immunocompromised, according to the CDC. They’re more likely to contract severe COVID-19, have a higher risk for long COVID, have lower antibody levels after vaccination, and develop serious breakthrough infections. About 40% of hospitalized breakthrough cases are among immunocompromised people.

According to  CDC guidance, people are considered to be “moderately or severely immunocompromised” if they have:

• Active cancer treatment for tumors or cancers of the blood
• Had an organ transplant and are taking medicine to suppress the immune system
• Had a stem cell transplant in the last 2 years and are taking medicine to suppress the immune system
• Advanced or untreated HIV infection
• Moderate or severe primary immunodeficiency, such as DiGeorge syndrome or Wiskott-Aldrich syndrome
• Active treatment with high-dose corticosteroids or other drugs that suppress the immune response

So far, only moderately and severely immunocompromised Americans are eligible for a fourth shot. Israel has begun offering fourth doses to high-risk groups, including older adults, but the Biden administration hasn’t yet said whether the United States will follow, the Times reported.

Overall, the focus remains on getting third shots to Americans who are eligible for boosters, Rochelle Walensky, MD, the CDC director, told reporters Jan. 7. U.S. officials will remain in touch with Israel to follow their data on fourth shots.

“We will be following our own data carefully as well, to see how these boosters are working in terms of waning effectiveness, not just for infection but, importantly, for severe disease,” she said.

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

The Mayo Clinic fired 700 employees this week who didn’t comply with its COVID-19 vaccine mandate.

The medical center, which is Minnesota’s largest employer, has major campuses in Arizona, Florida, and Minnesota and operates hospitals in Iowa and Wisconsin.

Employees had until Jan. 3 to get vaccinated or receive approval for an exemption. On Jan. 4, the hospital fired those who didn’t meet the requirement, according to Action News Jax, a CBS affiliate in Florida.

The 700 employees make up about 1% of Mayo Clinic’s 73,000-person workforce. So far, none of the employees at the campus in Jacksonville, Fla., have been affected, the news outlet reported.

“Florida staff who are not in compliance with our vaccination program remain employed pending the outcome of litigation related to the Centers for Medicare & Medicaid Services requirements,” a Mayo Clinic spokesperson told Action News Jax.

The federal government and Florida remain at odds over vaccine mandates, and several lawsuits are winding through the court system. Florida Gov. Ron DeSantis signed legislation in November that bans private Florida employers from requiring all employees to get vaccinated and calls for various exemption options, according to The Florida Times-Union. The state law clashes with a federal rule that requires vaccinations for all health care workers at hospitals that receive Medicare and Medicaid funding.

The Mayo Clinic mandate required employees to receive at least one COVID-19 vaccine dose and not be “overdue” for a second dose, according to the statement. Only medical and religious exemptions were allowed, and most medical and religious exemptions were approved.

“While Mayo Clinic is saddened to lose valuable employees, we need to take all steps necessary to keep our patients, workforce, visitors, and communities safe,” Mayo Clinic wrote in its statement. “If individuals released from employment choose to get vaccinated at a later date, the opportunity exists for them to apply and return to Mayo Clinic for future job openings.”

With the latest surge in COVID-19 cases from the Omicron variant, the Mayo Clinic also encouraged unvaccinated people to get a shot and those who are eligible for a booster to get one “as soon as possible.”

“Based on science and data, it’s clear that vaccination keeps people out of the hospital and saves lives,” according to the statement. “That’s true for everyone in our communities – and it’s especially true for the many patients with serious or complex diseases who seek care at Mayo Clinic each day.”

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

The Mayo Clinic fired 700 employees this week who didn’t comply with its COVID-19 vaccine mandate.

The medical center, which is Minnesota’s largest employer, has major campuses in Arizona, Florida, and Minnesota and operates hospitals in Iowa and Wisconsin.

Employees had until Jan. 3 to get vaccinated or receive approval for an exemption. On Jan. 4, the hospital fired those who didn’t meet the requirement, according to Action News Jax, a CBS affiliate in Florida.

The 700 employees make up about 1% of Mayo Clinic’s 73,000-person workforce. So far, none of the employees at the campus in Jacksonville, Fla., have been affected, the news outlet reported.

“Florida staff who are not in compliance with our vaccination program remain employed pending the outcome of litigation related to the Centers for Medicare & Medicaid Services requirements,” a Mayo Clinic spokesperson told Action News Jax.

The federal government and Florida remain at odds over vaccine mandates, and several lawsuits are winding through the court system. Florida Gov. Ron DeSantis signed legislation in November that bans private Florida employers from requiring all employees to get vaccinated and calls for various exemption options, according to The Florida Times-Union. The state law clashes with a federal rule that requires vaccinations for all health care workers at hospitals that receive Medicare and Medicaid funding.

The Mayo Clinic mandate required employees to receive at least one COVID-19 vaccine dose and not be “overdue” for a second dose, according to the statement. Only medical and religious exemptions were allowed, and most medical and religious exemptions were approved.

“While Mayo Clinic is saddened to lose valuable employees, we need to take all steps necessary to keep our patients, workforce, visitors, and communities safe,” Mayo Clinic wrote in its statement. “If individuals released from employment choose to get vaccinated at a later date, the opportunity exists for them to apply and return to Mayo Clinic for future job openings.”

With the latest surge in COVID-19 cases from the Omicron variant, the Mayo Clinic also encouraged unvaccinated people to get a shot and those who are eligible for a booster to get one “as soon as possible.”

“Based on science and data, it’s clear that vaccination keeps people out of the hospital and saves lives,” according to the statement. “That’s true for everyone in our communities – and it’s especially true for the many patients with serious or complex diseases who seek care at Mayo Clinic each day.”

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

The Mayo Clinic fired 700 employees this week who didn’t comply with its COVID-19 vaccine mandate.

The medical center, which is Minnesota’s largest employer, has major campuses in Arizona, Florida, and Minnesota and operates hospitals in Iowa and Wisconsin.

Employees had until Jan. 3 to get vaccinated or receive approval for an exemption. On Jan. 4, the hospital fired those who didn’t meet the requirement, according to Action News Jax, a CBS affiliate in Florida.

The 700 employees make up about 1% of Mayo Clinic’s 73,000-person workforce. So far, none of the employees at the campus in Jacksonville, Fla., have been affected, the news outlet reported.

“Florida staff who are not in compliance with our vaccination program remain employed pending the outcome of litigation related to the Centers for Medicare & Medicaid Services requirements,” a Mayo Clinic spokesperson told Action News Jax.

The federal government and Florida remain at odds over vaccine mandates, and several lawsuits are winding through the court system. Florida Gov. Ron DeSantis signed legislation in November that bans private Florida employers from requiring all employees to get vaccinated and calls for various exemption options, according to The Florida Times-Union. The state law clashes with a federal rule that requires vaccinations for all health care workers at hospitals that receive Medicare and Medicaid funding.

The Mayo Clinic mandate required employees to receive at least one COVID-19 vaccine dose and not be “overdue” for a second dose, according to the statement. Only medical and religious exemptions were allowed, and most medical and religious exemptions were approved.

“While Mayo Clinic is saddened to lose valuable employees, we need to take all steps necessary to keep our patients, workforce, visitors, and communities safe,” Mayo Clinic wrote in its statement. “If individuals released from employment choose to get vaccinated at a later date, the opportunity exists for them to apply and return to Mayo Clinic for future job openings.”

With the latest surge in COVID-19 cases from the Omicron variant, the Mayo Clinic also encouraged unvaccinated people to get a shot and those who are eligible for a booster to get one “as soon as possible.”

“Based on science and data, it’s clear that vaccination keeps people out of the hospital and saves lives,” according to the statement. “That’s true for everyone in our communities – and it’s especially true for the many patients with serious or complex diseases who seek care at Mayo Clinic each day.”

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

Hospitals across the United States are beginning to fill up with COVID-19 patients again, but a smaller proportion of cases are severe enough to move to intensive care or require mechanical ventilation.

So far, hospitalizations caused by the Omicron variant appear to be milder than in previous waves.

“We are seeing an increase in the number of hospitalizations,” Rahul Sharma, MD, emergency physician-in-chief for New York–Presbyterian/Weill Cornell Medicine, told the New York Times.

“We’re not sending as many patients to the ICU, we’re not intubating as many patients, and actually, most of our patients that are coming to the emergency department that do test positive are actually being discharged,” he said.

Most Omicron patients in ICUs are unvaccinated or have severely compromised immune systems, doctors told the newspaper.

Currently, about 113,000 COVID-19 patients are hospitalized across the country, according to the latest data from the Department of Health & Human Services. About 76% of inpatient beds are in use nationwide, with about 16% of inpatient beds in use for COVID-19.

Early data suggests that the Omicron variant may cause less severe disease. But it’s easier to catch the variant, so more people are getting the virus, including people who have some immunity through prior infection or vaccination, which is driving up hospitalization numbers.

In New York, for instance, COVID-19 hospitalizations have surpassed the peak of last winter’s surge, the newspaper reported. In addition, Maryland Gov. Larry Hogan declared a state of emergency on Jan. 4, noting that the state had more hospitalized COVID-19 patients than at any other time during the pandemic.

“We’re in truly crushed mode,” Gabe Kelen, MD, chair of the department of emergency medicine for the Johns Hopkins University, Baltimore, told the Times.

Earlier in the pandemic, hospitals faced challenges with stockpiling ventilators and personal protective equipment, doctors told the newspaper. Now they’re dealing with limits on hospital beds and staffing as health care workers test positive. The increase in COVID-19 cases has also come along with a rise in hospitalizations for other conditions such as heart attacks and strokes.

In response, some hospitals are considering cutting elective surgeries because of staff shortages and limited bed capacity, the newspaper reported. In the meantime, hospital staff and administrators are watching case numbers to see how high hospitalizations may soar because of the Omicron variant.

“How high will it go? Can’t tell you. Don’t know,” James Musser, MD, chair of pathology and genomic medicine at Houston Methodist, told the Times. “We’re all watching it, obviously, very, very closely.”

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

Hospitals across the United States are beginning to fill up with COVID-19 patients again, but a smaller proportion of cases are severe enough to move to intensive care or require mechanical ventilation.

So far, hospitalizations caused by the Omicron variant appear to be milder than in previous waves.

“We are seeing an increase in the number of hospitalizations,” Rahul Sharma, MD, emergency physician-in-chief for New York–Presbyterian/Weill Cornell Medicine, told the New York Times.

“We’re not sending as many patients to the ICU, we’re not intubating as many patients, and actually, most of our patients that are coming to the emergency department that do test positive are actually being discharged,” he said.

Most Omicron patients in ICUs are unvaccinated or have severely compromised immune systems, doctors told the newspaper.

Currently, about 113,000 COVID-19 patients are hospitalized across the country, according to the latest data from the Department of Health & Human Services. About 76% of inpatient beds are in use nationwide, with about 16% of inpatient beds in use for COVID-19.

Early data suggests that the Omicron variant may cause less severe disease. But it’s easier to catch the variant, so more people are getting the virus, including people who have some immunity through prior infection or vaccination, which is driving up hospitalization numbers.

In New York, for instance, COVID-19 hospitalizations have surpassed the peak of last winter’s surge, the newspaper reported. In addition, Maryland Gov. Larry Hogan declared a state of emergency on Jan. 4, noting that the state had more hospitalized COVID-19 patients than at any other time during the pandemic.

“We’re in truly crushed mode,” Gabe Kelen, MD, chair of the department of emergency medicine for the Johns Hopkins University, Baltimore, told the Times.

Earlier in the pandemic, hospitals faced challenges with stockpiling ventilators and personal protective equipment, doctors told the newspaper. Now they’re dealing with limits on hospital beds and staffing as health care workers test positive. The increase in COVID-19 cases has also come along with a rise in hospitalizations for other conditions such as heart attacks and strokes.

In response, some hospitals are considering cutting elective surgeries because of staff shortages and limited bed capacity, the newspaper reported. In the meantime, hospital staff and administrators are watching case numbers to see how high hospitalizations may soar because of the Omicron variant.

“How high will it go? Can’t tell you. Don’t know,” James Musser, MD, chair of pathology and genomic medicine at Houston Methodist, told the Times. “We’re all watching it, obviously, very, very closely.”

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

Hospitals across the United States are beginning to fill up with COVID-19 patients again, but a smaller proportion of cases are severe enough to move to intensive care or require mechanical ventilation.

So far, hospitalizations caused by the Omicron variant appear to be milder than in previous waves.

“We are seeing an increase in the number of hospitalizations,” Rahul Sharma, MD, emergency physician-in-chief for New York–Presbyterian/Weill Cornell Medicine, told the New York Times.

“We’re not sending as many patients to the ICU, we’re not intubating as many patients, and actually, most of our patients that are coming to the emergency department that do test positive are actually being discharged,” he said.

Most Omicron patients in ICUs are unvaccinated or have severely compromised immune systems, doctors told the newspaper.

Currently, about 113,000 COVID-19 patients are hospitalized across the country, according to the latest data from the Department of Health & Human Services. About 76% of inpatient beds are in use nationwide, with about 16% of inpatient beds in use for COVID-19.

Early data suggests that the Omicron variant may cause less severe disease. But it’s easier to catch the variant, so more people are getting the virus, including people who have some immunity through prior infection or vaccination, which is driving up hospitalization numbers.

In New York, for instance, COVID-19 hospitalizations have surpassed the peak of last winter’s surge, the newspaper reported. In addition, Maryland Gov. Larry Hogan declared a state of emergency on Jan. 4, noting that the state had more hospitalized COVID-19 patients than at any other time during the pandemic.

“We’re in truly crushed mode,” Gabe Kelen, MD, chair of the department of emergency medicine for the Johns Hopkins University, Baltimore, told the Times.

Earlier in the pandemic, hospitals faced challenges with stockpiling ventilators and personal protective equipment, doctors told the newspaper. Now they’re dealing with limits on hospital beds and staffing as health care workers test positive. The increase in COVID-19 cases has also come along with a rise in hospitalizations for other conditions such as heart attacks and strokes.

In response, some hospitals are considering cutting elective surgeries because of staff shortages and limited bed capacity, the newspaper reported. In the meantime, hospital staff and administrators are watching case numbers to see how high hospitalizations may soar because of the Omicron variant.

“How high will it go? Can’t tell you. Don’t know,” James Musser, MD, chair of pathology and genomic medicine at Houston Methodist, told the Times. “We’re all watching it, obviously, very, very closely.”

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

The CDC has released two studies that showed vaccine safety for ages 5-11 and emphasized the importance of vaccinating children against the coronavirus to prevent serious illness and hospitalization.

In one study published in the Morbidity and Mortality Weekly Report, researchers found that serious problems were rare among children who had received the Pfizer vaccine.

In another study, researchers looked at hundreds of pediatric hospitalizations from the summer and found that nearly all of children who developed severe COVID-19 weren’t fully vaccinated.

“This study demonstrates that unvaccinated children hospitalized for COVID-19 could experience severe disease and reinforces the importance of vaccination of all eligible children to provide individual protection and to protect those who are not yet eligible to be vaccinated,” the authors of the second study wrote.

Nearly 9 million doses of the Pfizer vaccine have been given to children aged 5-11 in the United States so far, according to The New York Times. By mid-December, or about 6 weeks after the age group became eligible for vaccination in October, the CDC said it had received very few reports of serious problems.

CDC researchers evaluated reports received from doctors and the public, including survey responses from parents and guardians of about 43,000 children between ages 5 and 11. Many children reported nonserious events such as pain at the injection site, fatigue, or a headache, especially after the second dose.

Among more than 4,100 adverse event reports received in November and December, 100 were for serious events, with the most common being fever or vomiting.

The CDC had received 11 verified reports of myocarditis, or inflammation of the heart muscle, which has been noted as a rare side effect of the vaccine among boys and men between ages 12 and 29. Among those, seven children had already recovered and four were still recovering at the time of the report.

The CDC received reports of two deaths – girls who were aged 5 and 6 – who had chronic medical conditions and were in “fragile health” before their shots. The agency said that no data suggested a “causal association between death and vaccination.”

The CDC also received some reports that children between ages 5 and 11 received the larger vaccine dose meant for older children and adults. Most reports said that the children didn’t experience any problems after an incorrect dose.

In a separate study about pediatric hospitalizations, CDC researchers looked at more than 700 children under age 18 who were hospitalized for COVID-19 in July and August at six children’s hospitals in Arkansas, Florida, Illinois, Louisiana, Texas, and Washington, D.C.

Researchers found that only one of the 272 vaccine-eligible patients between ages 12 and 17 had been fully vaccinated, and 12 were partially vaccinated.

In addition, about two-thirds of the hospitalized children between ages 12 and 17 had an underlying condition, with obesity being the most common. About one-third of children under age 5 had more than one viral infection.

Overall, about 30% of the children had to be treated in intensive care units, and 15% needed invasive medical ventilation, CDC researchers found. Nearly 3% had multisystem inflammatory syndrome in children, or MIS-C, which is a rare but serious inflammatory condition associated with COVID-19.

Among all the children hospitalized with COVID-19, about 1.5% died.

“Few vaccine-eligible patients hospitalized for COVID-19 were vaccinated, highlighting the importance of vaccination for those aged ≥5 years and other prevention strategies to protect children and adolescents from COVID-19, particularly those with underlying medical conditions,” study authors wrote.

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

The CDC has released two studies that showed vaccine safety for ages 5-11 and emphasized the importance of vaccinating children against the coronavirus to prevent serious illness and hospitalization.

In one study published in the Morbidity and Mortality Weekly Report, researchers found that serious problems were rare among children who had received the Pfizer vaccine.

In another study, researchers looked at hundreds of pediatric hospitalizations from the summer and found that nearly all of children who developed severe COVID-19 weren’t fully vaccinated.

“This study demonstrates that unvaccinated children hospitalized for COVID-19 could experience severe disease and reinforces the importance of vaccination of all eligible children to provide individual protection and to protect those who are not yet eligible to be vaccinated,” the authors of the second study wrote.

Nearly 9 million doses of the Pfizer vaccine have been given to children aged 5-11 in the United States so far, according to The New York Times. By mid-December, or about 6 weeks after the age group became eligible for vaccination in October, the CDC said it had received very few reports of serious problems.

CDC researchers evaluated reports received from doctors and the public, including survey responses from parents and guardians of about 43,000 children between ages 5 and 11. Many children reported nonserious events such as pain at the injection site, fatigue, or a headache, especially after the second dose.

Among more than 4,100 adverse event reports received in November and December, 100 were for serious events, with the most common being fever or vomiting.

The CDC had received 11 verified reports of myocarditis, or inflammation of the heart muscle, which has been noted as a rare side effect of the vaccine among boys and men between ages 12 and 29. Among those, seven children had already recovered and four were still recovering at the time of the report.

The CDC received reports of two deaths – girls who were aged 5 and 6 – who had chronic medical conditions and were in “fragile health” before their shots. The agency said that no data suggested a “causal association between death and vaccination.”

The CDC also received some reports that children between ages 5 and 11 received the larger vaccine dose meant for older children and adults. Most reports said that the children didn’t experience any problems after an incorrect dose.

In a separate study about pediatric hospitalizations, CDC researchers looked at more than 700 children under age 18 who were hospitalized for COVID-19 in July and August at six children’s hospitals in Arkansas, Florida, Illinois, Louisiana, Texas, and Washington, D.C.

Researchers found that only one of the 272 vaccine-eligible patients between ages 12 and 17 had been fully vaccinated, and 12 were partially vaccinated.

In addition, about two-thirds of the hospitalized children between ages 12 and 17 had an underlying condition, with obesity being the most common. About one-third of children under age 5 had more than one viral infection.

Overall, about 30% of the children had to be treated in intensive care units, and 15% needed invasive medical ventilation, CDC researchers found. Nearly 3% had multisystem inflammatory syndrome in children, or MIS-C, which is a rare but serious inflammatory condition associated with COVID-19.

Among all the children hospitalized with COVID-19, about 1.5% died.

“Few vaccine-eligible patients hospitalized for COVID-19 were vaccinated, highlighting the importance of vaccination for those aged ≥5 years and other prevention strategies to protect children and adolescents from COVID-19, particularly those with underlying medical conditions,” study authors wrote.

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

The CDC has released two studies that showed vaccine safety for ages 5-11 and emphasized the importance of vaccinating children against the coronavirus to prevent serious illness and hospitalization.

In one study published in the Morbidity and Mortality Weekly Report, researchers found that serious problems were rare among children who had received the Pfizer vaccine.

In another study, researchers looked at hundreds of pediatric hospitalizations from the summer and found that nearly all of children who developed severe COVID-19 weren’t fully vaccinated.

“This study demonstrates that unvaccinated children hospitalized for COVID-19 could experience severe disease and reinforces the importance of vaccination of all eligible children to provide individual protection and to protect those who are not yet eligible to be vaccinated,” the authors of the second study wrote.

Nearly 9 million doses of the Pfizer vaccine have been given to children aged 5-11 in the United States so far, according to The New York Times. By mid-December, or about 6 weeks after the age group became eligible for vaccination in October, the CDC said it had received very few reports of serious problems.

CDC researchers evaluated reports received from doctors and the public, including survey responses from parents and guardians of about 43,000 children between ages 5 and 11. Many children reported nonserious events such as pain at the injection site, fatigue, or a headache, especially after the second dose.

Among more than 4,100 adverse event reports received in November and December, 100 were for serious events, with the most common being fever or vomiting.

The CDC had received 11 verified reports of myocarditis, or inflammation of the heart muscle, which has been noted as a rare side effect of the vaccine among boys and men between ages 12 and 29. Among those, seven children had already recovered and four were still recovering at the time of the report.

The CDC received reports of two deaths – girls who were aged 5 and 6 – who had chronic medical conditions and were in “fragile health” before their shots. The agency said that no data suggested a “causal association between death and vaccination.”

The CDC also received some reports that children between ages 5 and 11 received the larger vaccine dose meant for older children and adults. Most reports said that the children didn’t experience any problems after an incorrect dose.

In a separate study about pediatric hospitalizations, CDC researchers looked at more than 700 children under age 18 who were hospitalized for COVID-19 in July and August at six children’s hospitals in Arkansas, Florida, Illinois, Louisiana, Texas, and Washington, D.C.

Researchers found that only one of the 272 vaccine-eligible patients between ages 12 and 17 had been fully vaccinated, and 12 were partially vaccinated.

In addition, about two-thirds of the hospitalized children between ages 12 and 17 had an underlying condition, with obesity being the most common. About one-third of children under age 5 had more than one viral infection.

Overall, about 30% of the children had to be treated in intensive care units, and 15% needed invasive medical ventilation, CDC researchers found. Nearly 3% had multisystem inflammatory syndrome in children, or MIS-C, which is a rare but serious inflammatory condition associated with COVID-19.

Among all the children hospitalized with COVID-19, about 1.5% died.

“Few vaccine-eligible patients hospitalized for COVID-19 were vaccinated, highlighting the importance of vaccination for those aged ≥5 years and other prevention strategies to protect children and adolescents from COVID-19, particularly those with underlying medical conditions,” study authors wrote.

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

As the United States enters a third year of the COVID-19 pandemic, case numbers are higher than ever and disrupting businesses, travel plans, and school schedules.

The United States is reporting a 7-day average of more than 386,000 cases after several record-breaking days, according to the data tracker by the New York Times. The United States surpassed 585,000 cases on Dec. 30, setting a new record before the New Year’s holiday.

New York, Washington, D.C., and other states along the East Coast are leading the national surge. New York reported more than 85,000 new cases on the last day of 2021, marking the highest 1-day total in the state since the pandemic began.

“As we fight the winter surge, we need to keep the most vulnerable among us in mind – do what you can to keep others in your community safe from COVID-19,” New York Gov. Kathy Hochul said in a statement on Jan. 1, 2022.

“Wear a mask, wash your hands, and take advantage of the best tool we have at our disposal – the vaccine,” she said.

The 2021 winter surge in the United States peaked around Jan. 12, which may suggest that the country has a week or so before the current wave reaches its height and begins to drop, the newspaper reported.

In the meantime, people are dealing with disruptions as they return from holiday travel and begin the new year. Airlines canceled more than 2,700 flights on Jan. 1 and more than 1,900 flights on Jan. 2, bringing the total since Christmas Eve to more than 14,000 canceled flights.

About half of cancellations were connected to wintry weather at key airline hubs in Chicago and Denver, the newspaper reported, as well as ongoing flight crew shortages caused by the Omicron variant.

More disruptions could continue, the Federal Aviation Administration warned, as an increasing number of its air-traffic control employees test positive for COVID-19.

“To maintain safety, traffic volumes at some facilities could be reduced, which might result in delays during busy periods,” an FAA spokesman told The Wall Street Journal.

The current COVID-19 surge will also affect businesses and schools as the new year begins. A growing number of universities are opting to start the next semester with remote instruction.

American University, Duke University, and Michigan State University announced in recent days that they would delay in-person classes to slow the spread of the coronavirus on campus. They will begin classes online on Jan. 10 and return to campus the following week or later.

“I realize that students prefer to be in person, and so do I. But it is important that we do so in a safe manner,” Samuel Stanley Jr., MD, president of Michigan State University, said in a statement on New Year’s Eve.

K-12 school districts are deciding how to adapt as well. Some districts are bringing back mask requirements, and some are ramping up testing. Others are moving to remote learning – and signaling the need for flexibility as the Omicron variant brings new surprises.

“Change has been the only constant in this fight,” Roger Leon, the superintendent for Newark (N.J.) Public Schools, wrote in a note to parents. He announced on Dec. 30, 2021, that students would learn remotely for at least the first 2 weeks of the new year.

This continues “to be a brutal, relentless, and ruthless virus that rears its ugly head at inopportune times,” he said.

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

As the United States enters a third year of the COVID-19 pandemic, case numbers are higher than ever and disrupting businesses, travel plans, and school schedules.

The United States is reporting a 7-day average of more than 386,000 cases after several record-breaking days, according to the data tracker by the New York Times. The United States surpassed 585,000 cases on Dec. 30, setting a new record before the New Year’s holiday.

New York, Washington, D.C., and other states along the East Coast are leading the national surge. New York reported more than 85,000 new cases on the last day of 2021, marking the highest 1-day total in the state since the pandemic began.

“As we fight the winter surge, we need to keep the most vulnerable among us in mind – do what you can to keep others in your community safe from COVID-19,” New York Gov. Kathy Hochul said in a statement on Jan. 1, 2022.

“Wear a mask, wash your hands, and take advantage of the best tool we have at our disposal – the vaccine,” she said.

The 2021 winter surge in the United States peaked around Jan. 12, which may suggest that the country has a week or so before the current wave reaches its height and begins to drop, the newspaper reported.

In the meantime, people are dealing with disruptions as they return from holiday travel and begin the new year. Airlines canceled more than 2,700 flights on Jan. 1 and more than 1,900 flights on Jan. 2, bringing the total since Christmas Eve to more than 14,000 canceled flights.

About half of cancellations were connected to wintry weather at key airline hubs in Chicago and Denver, the newspaper reported, as well as ongoing flight crew shortages caused by the Omicron variant.

More disruptions could continue, the Federal Aviation Administration warned, as an increasing number of its air-traffic control employees test positive for COVID-19.

“To maintain safety, traffic volumes at some facilities could be reduced, which might result in delays during busy periods,” an FAA spokesman told The Wall Street Journal.

The current COVID-19 surge will also affect businesses and schools as the new year begins. A growing number of universities are opting to start the next semester with remote instruction.

American University, Duke University, and Michigan State University announced in recent days that they would delay in-person classes to slow the spread of the coronavirus on campus. They will begin classes online on Jan. 10 and return to campus the following week or later.

“I realize that students prefer to be in person, and so do I. But it is important that we do so in a safe manner,” Samuel Stanley Jr., MD, president of Michigan State University, said in a statement on New Year’s Eve.

K-12 school districts are deciding how to adapt as well. Some districts are bringing back mask requirements, and some are ramping up testing. Others are moving to remote learning – and signaling the need for flexibility as the Omicron variant brings new surprises.

“Change has been the only constant in this fight,” Roger Leon, the superintendent for Newark (N.J.) Public Schools, wrote in a note to parents. He announced on Dec. 30, 2021, that students would learn remotely for at least the first 2 weeks of the new year.

This continues “to be a brutal, relentless, and ruthless virus that rears its ugly head at inopportune times,” he said.

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

As the United States enters a third year of the COVID-19 pandemic, case numbers are higher than ever and disrupting businesses, travel plans, and school schedules.

The United States is reporting a 7-day average of more than 386,000 cases after several record-breaking days, according to the data tracker by the New York Times. The United States surpassed 585,000 cases on Dec. 30, setting a new record before the New Year’s holiday.

New York, Washington, D.C., and other states along the East Coast are leading the national surge. New York reported more than 85,000 new cases on the last day of 2021, marking the highest 1-day total in the state since the pandemic began.

“As we fight the winter surge, we need to keep the most vulnerable among us in mind – do what you can to keep others in your community safe from COVID-19,” New York Gov. Kathy Hochul said in a statement on Jan. 1, 2022.

“Wear a mask, wash your hands, and take advantage of the best tool we have at our disposal – the vaccine,” she said.

The 2021 winter surge in the United States peaked around Jan. 12, which may suggest that the country has a week or so before the current wave reaches its height and begins to drop, the newspaper reported.

In the meantime, people are dealing with disruptions as they return from holiday travel and begin the new year. Airlines canceled more than 2,700 flights on Jan. 1 and more than 1,900 flights on Jan. 2, bringing the total since Christmas Eve to more than 14,000 canceled flights.

About half of cancellations were connected to wintry weather at key airline hubs in Chicago and Denver, the newspaper reported, as well as ongoing flight crew shortages caused by the Omicron variant.

More disruptions could continue, the Federal Aviation Administration warned, as an increasing number of its air-traffic control employees test positive for COVID-19.

“To maintain safety, traffic volumes at some facilities could be reduced, which might result in delays during busy periods,” an FAA spokesman told The Wall Street Journal.

The current COVID-19 surge will also affect businesses and schools as the new year begins. A growing number of universities are opting to start the next semester with remote instruction.

American University, Duke University, and Michigan State University announced in recent days that they would delay in-person classes to slow the spread of the coronavirus on campus. They will begin classes online on Jan. 10 and return to campus the following week or later.

“I realize that students prefer to be in person, and so do I. But it is important that we do so in a safe manner,” Samuel Stanley Jr., MD, president of Michigan State University, said in a statement on New Year’s Eve.

K-12 school districts are deciding how to adapt as well. Some districts are bringing back mask requirements, and some are ramping up testing. Others are moving to remote learning – and signaling the need for flexibility as the Omicron variant brings new surprises.

“Change has been the only constant in this fight,” Roger Leon, the superintendent for Newark (N.J.) Public Schools, wrote in a note to parents. He announced on Dec. 30, 2021, that students would learn remotely for at least the first 2 weeks of the new year.

This continues “to be a brutal, relentless, and ruthless virus that rears its ugly head at inopportune times,” he said.

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

The coronavirus that causes COVID-19 can spread to the heart and brain within days of infection and can survive for months in organs, according to a new study by the National Institutes of Health.

The virus can spread to almost every organ system in the body, which could contribute to the ongoing symptoms seen in “long COVID” patients, the study authors wrote. The study is considered one of the most comprehensive reviews of how the virus replicates in human cells and persists in the human body. It is under review for publication in the journal Nature.

“This is remarkably important work,” Ziyad Al-Aly, MD, director of the Clinical Epidemiology Center at the Veterans Affairs St. Louis Health Care System, told Bloomberg News. Dr. Al-Aly wasn’t involved with the NIH study but has researched the long-term effects of COVID-19.

“For a long time now, we have been scratching our heads and asking why long COVID seems to affect so many organ systems,” he said. “This paper sheds some light and may help explain why long COVID can occur even in people who had mild or asymptomatic acute disease.”

The NIH researchers sampled and analyzed tissues from autopsies on 44 patients who died after contracting the coronavirus during the first year of the pandemic. They found persistent virus particles in multiple parts of the body, including the heart and brain, for as long as 230 days after symptoms began. This could represent infection with defective virus particles, they said, which has also been seen in persistent infections among measles patients.

“We don’t yet know what burden of chronic illness will result in years to come,” Raina MacIntyre, PhD, a professor of global biosecurity at the University of New South Wales, Sydney, told Bloomberg News.

“Will we see young-onset cardiac failure in survivors or early-onset dementia?” she asked. “These are unanswered questions which call for a precautionary public health approach to mitigation of the spread of this virus.”

Unlike other COVID-19 autopsy research, the NIH team had a more comprehensive postmortem tissue collection process, which typically occurred within a day of the patient’s death, Bloomberg News reported. The researchers also used a variety of ways to preserve tissue to figure out viral levels. They were able to grow the virus collected from several tissues, including the heart, lungs, small intestine, and adrenal glands.

“Our results collectively show that, while the highest burden of SARS-CoV-2 is in the airways and lung, the virus can disseminate early during infection and infect cells throughout the entire body, including widely throughout the brain,” the study authors wrote.

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

The coronavirus that causes COVID-19 can spread to the heart and brain within days of infection and can survive for months in organs, according to a new study by the National Institutes of Health.

The virus can spread to almost every organ system in the body, which could contribute to the ongoing symptoms seen in “long COVID” patients, the study authors wrote. The study is considered one of the most comprehensive reviews of how the virus replicates in human cells and persists in the human body. It is under review for publication in the journal Nature.

“This is remarkably important work,” Ziyad Al-Aly, MD, director of the Clinical Epidemiology Center at the Veterans Affairs St. Louis Health Care System, told Bloomberg News. Dr. Al-Aly wasn’t involved with the NIH study but has researched the long-term effects of COVID-19.

“For a long time now, we have been scratching our heads and asking why long COVID seems to affect so many organ systems,” he said. “This paper sheds some light and may help explain why long COVID can occur even in people who had mild or asymptomatic acute disease.”

The NIH researchers sampled and analyzed tissues from autopsies on 44 patients who died after contracting the coronavirus during the first year of the pandemic. They found persistent virus particles in multiple parts of the body, including the heart and brain, for as long as 230 days after symptoms began. This could represent infection with defective virus particles, they said, which has also been seen in persistent infections among measles patients.

“We don’t yet know what burden of chronic illness will result in years to come,” Raina MacIntyre, PhD, a professor of global biosecurity at the University of New South Wales, Sydney, told Bloomberg News.

“Will we see young-onset cardiac failure in survivors or early-onset dementia?” she asked. “These are unanswered questions which call for a precautionary public health approach to mitigation of the spread of this virus.”

Unlike other COVID-19 autopsy research, the NIH team had a more comprehensive postmortem tissue collection process, which typically occurred within a day of the patient’s death, Bloomberg News reported. The researchers also used a variety of ways to preserve tissue to figure out viral levels. They were able to grow the virus collected from several tissues, including the heart, lungs, small intestine, and adrenal glands.

“Our results collectively show that, while the highest burden of SARS-CoV-2 is in the airways and lung, the virus can disseminate early during infection and infect cells throughout the entire body, including widely throughout the brain,” the study authors wrote.

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

The coronavirus that causes COVID-19 can spread to the heart and brain within days of infection and can survive for months in organs, according to a new study by the National Institutes of Health.

The virus can spread to almost every organ system in the body, which could contribute to the ongoing symptoms seen in “long COVID” patients, the study authors wrote. The study is considered one of the most comprehensive reviews of how the virus replicates in human cells and persists in the human body. It is under review for publication in the journal Nature.

“This is remarkably important work,” Ziyad Al-Aly, MD, director of the Clinical Epidemiology Center at the Veterans Affairs St. Louis Health Care System, told Bloomberg News. Dr. Al-Aly wasn’t involved with the NIH study but has researched the long-term effects of COVID-19.

“For a long time now, we have been scratching our heads and asking why long COVID seems to affect so many organ systems,” he said. “This paper sheds some light and may help explain why long COVID can occur even in people who had mild or asymptomatic acute disease.”

The NIH researchers sampled and analyzed tissues from autopsies on 44 patients who died after contracting the coronavirus during the first year of the pandemic. They found persistent virus particles in multiple parts of the body, including the heart and brain, for as long as 230 days after symptoms began. This could represent infection with defective virus particles, they said, which has also been seen in persistent infections among measles patients.

“We don’t yet know what burden of chronic illness will result in years to come,” Raina MacIntyre, PhD, a professor of global biosecurity at the University of New South Wales, Sydney, told Bloomberg News.

“Will we see young-onset cardiac failure in survivors or early-onset dementia?” she asked. “These are unanswered questions which call for a precautionary public health approach to mitigation of the spread of this virus.”

Unlike other COVID-19 autopsy research, the NIH team had a more comprehensive postmortem tissue collection process, which typically occurred within a day of the patient’s death, Bloomberg News reported. The researchers also used a variety of ways to preserve tissue to figure out viral levels. They were able to grow the virus collected from several tissues, including the heart, lungs, small intestine, and adrenal glands.

“Our results collectively show that, while the highest burden of SARS-CoV-2 is in the airways and lung, the virus can disseminate early during infection and infect cells throughout the entire body, including widely throughout the brain,” the study authors wrote.

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

Booster shot protection against symptomatic COVID-19 caused by the Omicron variant appears to fade in about 10 weeks, according to new data from Britain.

U.K. health officials shared the data just before Christmas and noted that there haven’t been enough severe cases of the Omicron variant to calculate how well boosters protect against severe disease. But they believe the extra shots provide significant protection against hospitalization and death.

“It will be a few weeks before effectiveness against severe disease with Omicron can be estimated,” U.K. Health Security Agency officials wrote in the report. “However, based on experience with previous variants, this is likely to be substantially higher than the estimates against symptomatic disease.”

Since countries began reporting Omicron cases in November, multiple studies have suggested the variant is better at escaping antibodies from vaccination and previous infection, according to the New York Times. The U.K. report adds to that, noting that both the initial vaccine series and booster doses were less effective and faded faster against the Omicron variant than the Delta variant.

Among those who received two doses of the AstraZeneca vaccine, a booster of the Pfizer or Moderna vaccine was 60% effective at preventing symptomatic disease 2 to 4 weeks after the shot. But after 10 weeks, the Pfizer booster was 35% effective, and the Moderna booster was 45% effective. (The AstraZeneca vaccine is not authorized in the United States, but the Johnson & Johnson shot uses a similar technology, the New York Times reported.)

Among those who received three Pfizer doses, vaccine effectiveness was 70% about a week after the booster but dropped to 45% after 10 weeks. At the same time, those who received an initial two-dose series of the Pfizer vaccine and then a Moderna booster seemed to have 75% effectiveness up to 9 weeks.

The report was based on an analysis of 148,000 Delta cases and 68,000 Omicron cases in the United Kingdom through Dec. 20. So far, the U.K. health officials wrote, Omicron infections appear to be less severe and less likely to lead to hospitalization than Delta infections. At that time, 132 people with lab-confirmed Omicron had been admitted to hospitals, and 14 deaths had been reported among ages 52-96.

“This analysis is preliminary because of the small numbers of Omicron cases currently in hospital and the limited spread of Omicron into older age groups as yet,” the report said.

The reinfection rate has also increased for the Omicron variant, the report found. Among the 116,000 people who had an Omicron infection, about 11,000 -- or 9.5% -- were linked to a previously confirmed infection, which is likely an undercount of reinfections. In the data analyzed, 69 Omicron cases were a third episode of COVID-19 infection, and 290 cases occurred 60-89 days after a first infection.

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

Booster shot protection against symptomatic COVID-19 caused by the Omicron variant appears to fade in about 10 weeks, according to new data from Britain.

U.K. health officials shared the data just before Christmas and noted that there haven’t been enough severe cases of the Omicron variant to calculate how well boosters protect against severe disease. But they believe the extra shots provide significant protection against hospitalization and death.

“It will be a few weeks before effectiveness against severe disease with Omicron can be estimated,” U.K. Health Security Agency officials wrote in the report. “However, based on experience with previous variants, this is likely to be substantially higher than the estimates against symptomatic disease.”

Since countries began reporting Omicron cases in November, multiple studies have suggested the variant is better at escaping antibodies from vaccination and previous infection, according to the New York Times. The U.K. report adds to that, noting that both the initial vaccine series and booster doses were less effective and faded faster against the Omicron variant than the Delta variant.

Among those who received two doses of the AstraZeneca vaccine, a booster of the Pfizer or Moderna vaccine was 60% effective at preventing symptomatic disease 2 to 4 weeks after the shot. But after 10 weeks, the Pfizer booster was 35% effective, and the Moderna booster was 45% effective. (The AstraZeneca vaccine is not authorized in the United States, but the Johnson & Johnson shot uses a similar technology, the New York Times reported.)

Among those who received three Pfizer doses, vaccine effectiveness was 70% about a week after the booster but dropped to 45% after 10 weeks. At the same time, those who received an initial two-dose series of the Pfizer vaccine and then a Moderna booster seemed to have 75% effectiveness up to 9 weeks.

The report was based on an analysis of 148,000 Delta cases and 68,000 Omicron cases in the United Kingdom through Dec. 20. So far, the U.K. health officials wrote, Omicron infections appear to be less severe and less likely to lead to hospitalization than Delta infections. At that time, 132 people with lab-confirmed Omicron had been admitted to hospitals, and 14 deaths had been reported among ages 52-96.

“This analysis is preliminary because of the small numbers of Omicron cases currently in hospital and the limited spread of Omicron into older age groups as yet,” the report said.

The reinfection rate has also increased for the Omicron variant, the report found. Among the 116,000 people who had an Omicron infection, about 11,000 -- or 9.5% -- were linked to a previously confirmed infection, which is likely an undercount of reinfections. In the data analyzed, 69 Omicron cases were a third episode of COVID-19 infection, and 290 cases occurred 60-89 days after a first infection.

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

Booster shot protection against symptomatic COVID-19 caused by the Omicron variant appears to fade in about 10 weeks, according to new data from Britain.

U.K. health officials shared the data just before Christmas and noted that there haven’t been enough severe cases of the Omicron variant to calculate how well boosters protect against severe disease. But they believe the extra shots provide significant protection against hospitalization and death.

“It will be a few weeks before effectiveness against severe disease with Omicron can be estimated,” U.K. Health Security Agency officials wrote in the report. “However, based on experience with previous variants, this is likely to be substantially higher than the estimates against symptomatic disease.”

Since countries began reporting Omicron cases in November, multiple studies have suggested the variant is better at escaping antibodies from vaccination and previous infection, according to the New York Times. The U.K. report adds to that, noting that both the initial vaccine series and booster doses were less effective and faded faster against the Omicron variant than the Delta variant.

Among those who received two doses of the AstraZeneca vaccine, a booster of the Pfizer or Moderna vaccine was 60% effective at preventing symptomatic disease 2 to 4 weeks after the shot. But after 10 weeks, the Pfizer booster was 35% effective, and the Moderna booster was 45% effective. (The AstraZeneca vaccine is not authorized in the United States, but the Johnson & Johnson shot uses a similar technology, the New York Times reported.)

Among those who received three Pfizer doses, vaccine effectiveness was 70% about a week after the booster but dropped to 45% after 10 weeks. At the same time, those who received an initial two-dose series of the Pfizer vaccine and then a Moderna booster seemed to have 75% effectiveness up to 9 weeks.

The report was based on an analysis of 148,000 Delta cases and 68,000 Omicron cases in the United Kingdom through Dec. 20. So far, the U.K. health officials wrote, Omicron infections appear to be less severe and less likely to lead to hospitalization than Delta infections. At that time, 132 people with lab-confirmed Omicron had been admitted to hospitals, and 14 deaths had been reported among ages 52-96.

“This analysis is preliminary because of the small numbers of Omicron cases currently in hospital and the limited spread of Omicron into older age groups as yet,” the report said.

The reinfection rate has also increased for the Omicron variant, the report found. Among the 116,000 people who had an Omicron infection, about 11,000 -- or 9.5% -- were linked to a previously confirmed infection, which is likely an undercount of reinfections. In the data analyzed, 69 Omicron cases were a third episode of COVID-19 infection, and 290 cases occurred 60-89 days after a first infection.

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

The Centers for Disease Control and Prevention has announced that students who are exposed to the coronavirus can still attend school as long as they continue to test negative for the virus in the following days.

The new guidance, known as the “test-to-stay” protocol, would reduce the number of children who are expected to stay home as a close contact to someone who tested positive for the virus.

“Test-to-stay is an encouraging public health practice to keep our children in schools,” Rochelle Walensky, MD, director of the CDC, said during a White House press briefing.

When a COVID-19 case is identified in a school, the test-to-stay strategy allows schools to implement regular testing rather than quarantine close contacts. If the contacts don’t experience symptoms and test negative at least twice in a seven-day period, they can continue in-person learning. If they test positive, then they are required to isolate.

In recent months, the CDC has collaborated with several school districts across the United States to evaluate test-to-stay programs. On Dec. 17, the CDC published two studies in its Morbidity and Mortality Weekly Report that demonstrated the effectiveness of these programs in limiting the spread of the virus while also keeping students in class.

“CDC is updating our materials to help schools and parents know how to best implement this promising and now-proven practice, along with our multi-layer prevention strategies that will help keep our children in the classroom safely,” Dr. Walensky said. “These studies demonstrated that test-to-stay works to keep unvaccinated children in school safely.”

In one study, researchers analyzed data for public schools in Los Angeles County between Aug. 16 and Oct. 31, where 432 schools implemented test-to-stay and 1,635 did not.

The Los Angeles County Department of Public Health found that COVID-19 cases did not increase among the schools that used the protocol, as compared with schools that didn’t.

Before test-to-stay was implemented, the average daily number of cases was 10 cases per 100,000 students in districts that later adopted the protocol and 20 cases per 100,000 students in districts that didn’t. After the program was implemented, average daily case rates declined in all school districts but remained lower in test-to-stay districts, with 6 cases per 100,000 students as compared with 11 cases per 100,000 students in districts that didn’t do the protocol.

In addition, schools that didn’t use the test-to-stay program “lost substantial in-person school days,” researchers wrote. At the same time, implementing the program “requires resources that might be currently unavailable for some schools,” they added, noting that “a higher percentage of disadvantaged schools” didn’t do the protocol.

The program requires personnel who can track which students need to be tested, their results and when they can come off the list of close contacts, officials told CNN. This can be a challenge for overstretched school nursing staff.

In another study published last week, researchers analyzed data between Aug. 9 and Oct. 29 for 90 schools across 31 districts in Lake County, Ill., that implemented test-to-stay programs. During that time, the schools reported 258 COVID-19 cases and 1,664 close contacts.

The Lake County Health Department examined the number of close contacts that later tested positive and whether the virus further spread from the close contacts to other people. They found that 16 of the close contacts tested positive and that these were all students. No one appeared to transmit the virus to others at school, but nine cases were identified among household contacts.

Overall, study authors wrote, the test-to-stay protocol preserved in-person learning days for students. In addition, regular testing, masking, and physical distancing led to lower virus transmission in school.

“The test-to-stay-programs are really good at balancing the costs and benefits,” Zoe McLaren, a health policy expert at the University of Maryland at Baltimore, told The New York Times.

“What the test-to-stay program does is help us keep COVID cases down, while also trying to make sure we keep kids in school as much as possible, which I think is really important,” she said.

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

The Centers for Disease Control and Prevention has announced that students who are exposed to the coronavirus can still attend school as long as they continue to test negative for the virus in the following days.

The new guidance, known as the “test-to-stay” protocol, would reduce the number of children who are expected to stay home as a close contact to someone who tested positive for the virus.

“Test-to-stay is an encouraging public health practice to keep our children in schools,” Rochelle Walensky, MD, director of the CDC, said during a White House press briefing.

When a COVID-19 case is identified in a school, the test-to-stay strategy allows schools to implement regular testing rather than quarantine close contacts. If the contacts don’t experience symptoms and test negative at least twice in a seven-day period, they can continue in-person learning. If they test positive, then they are required to isolate.

In recent months, the CDC has collaborated with several school districts across the United States to evaluate test-to-stay programs. On Dec. 17, the CDC published two studies in its Morbidity and Mortality Weekly Report that demonstrated the effectiveness of these programs in limiting the spread of the virus while also keeping students in class.

“CDC is updating our materials to help schools and parents know how to best implement this promising and now-proven practice, along with our multi-layer prevention strategies that will help keep our children in the classroom safely,” Dr. Walensky said. “These studies demonstrated that test-to-stay works to keep unvaccinated children in school safely.”

In one study, researchers analyzed data for public schools in Los Angeles County between Aug. 16 and Oct. 31, where 432 schools implemented test-to-stay and 1,635 did not.

The Los Angeles County Department of Public Health found that COVID-19 cases did not increase among the schools that used the protocol, as compared with schools that didn’t.

Before test-to-stay was implemented, the average daily number of cases was 10 cases per 100,000 students in districts that later adopted the protocol and 20 cases per 100,000 students in districts that didn’t. After the program was implemented, average daily case rates declined in all school districts but remained lower in test-to-stay districts, with 6 cases per 100,000 students as compared with 11 cases per 100,000 students in districts that didn’t do the protocol.

In addition, schools that didn’t use the test-to-stay program “lost substantial in-person school days,” researchers wrote. At the same time, implementing the program “requires resources that might be currently unavailable for some schools,” they added, noting that “a higher percentage of disadvantaged schools” didn’t do the protocol.

The program requires personnel who can track which students need to be tested, their results and when they can come off the list of close contacts, officials told CNN. This can be a challenge for overstretched school nursing staff.

In another study published last week, researchers analyzed data between Aug. 9 and Oct. 29 for 90 schools across 31 districts in Lake County, Ill., that implemented test-to-stay programs. During that time, the schools reported 258 COVID-19 cases and 1,664 close contacts.

The Lake County Health Department examined the number of close contacts that later tested positive and whether the virus further spread from the close contacts to other people. They found that 16 of the close contacts tested positive and that these were all students. No one appeared to transmit the virus to others at school, but nine cases were identified among household contacts.

Overall, study authors wrote, the test-to-stay protocol preserved in-person learning days for students. In addition, regular testing, masking, and physical distancing led to lower virus transmission in school.

“The test-to-stay-programs are really good at balancing the costs and benefits,” Zoe McLaren, a health policy expert at the University of Maryland at Baltimore, told The New York Times.

“What the test-to-stay program does is help us keep COVID cases down, while also trying to make sure we keep kids in school as much as possible, which I think is really important,” she said.

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

The Centers for Disease Control and Prevention has announced that students who are exposed to the coronavirus can still attend school as long as they continue to test negative for the virus in the following days.

The new guidance, known as the “test-to-stay” protocol, would reduce the number of children who are expected to stay home as a close contact to someone who tested positive for the virus.

“Test-to-stay is an encouraging public health practice to keep our children in schools,” Rochelle Walensky, MD, director of the CDC, said during a White House press briefing.

When a COVID-19 case is identified in a school, the test-to-stay strategy allows schools to implement regular testing rather than quarantine close contacts. If the contacts don’t experience symptoms and test negative at least twice in a seven-day period, they can continue in-person learning. If they test positive, then they are required to isolate.

In recent months, the CDC has collaborated with several school districts across the United States to evaluate test-to-stay programs. On Dec. 17, the CDC published two studies in its Morbidity and Mortality Weekly Report that demonstrated the effectiveness of these programs in limiting the spread of the virus while also keeping students in class.

“CDC is updating our materials to help schools and parents know how to best implement this promising and now-proven practice, along with our multi-layer prevention strategies that will help keep our children in the classroom safely,” Dr. Walensky said. “These studies demonstrated that test-to-stay works to keep unvaccinated children in school safely.”

In one study, researchers analyzed data for public schools in Los Angeles County between Aug. 16 and Oct. 31, where 432 schools implemented test-to-stay and 1,635 did not.

The Los Angeles County Department of Public Health found that COVID-19 cases did not increase among the schools that used the protocol, as compared with schools that didn’t.

Before test-to-stay was implemented, the average daily number of cases was 10 cases per 100,000 students in districts that later adopted the protocol and 20 cases per 100,000 students in districts that didn’t. After the program was implemented, average daily case rates declined in all school districts but remained lower in test-to-stay districts, with 6 cases per 100,000 students as compared with 11 cases per 100,000 students in districts that didn’t do the protocol.

In addition, schools that didn’t use the test-to-stay program “lost substantial in-person school days,” researchers wrote. At the same time, implementing the program “requires resources that might be currently unavailable for some schools,” they added, noting that “a higher percentage of disadvantaged schools” didn’t do the protocol.

The program requires personnel who can track which students need to be tested, their results and when they can come off the list of close contacts, officials told CNN. This can be a challenge for overstretched school nursing staff.

In another study published last week, researchers analyzed data between Aug. 9 and Oct. 29 for 90 schools across 31 districts in Lake County, Ill., that implemented test-to-stay programs. During that time, the schools reported 258 COVID-19 cases and 1,664 close contacts.

The Lake County Health Department examined the number of close contacts that later tested positive and whether the virus further spread from the close contacts to other people. They found that 16 of the close contacts tested positive and that these were all students. No one appeared to transmit the virus to others at school, but nine cases were identified among household contacts.

Overall, study authors wrote, the test-to-stay protocol preserved in-person learning days for students. In addition, regular testing, masking, and physical distancing led to lower virus transmission in school.

“The test-to-stay-programs are really good at balancing the costs and benefits,” Zoe McLaren, a health policy expert at the University of Maryland at Baltimore, told The New York Times.

“What the test-to-stay program does is help us keep COVID cases down, while also trying to make sure we keep kids in school as much as possible, which I think is really important,” she said.

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