Liao Pan | China News Service | Getty Images Fall is on the horizon and public health officials are again bracing for another wave of Covid cases. Over the past two years, fall and winter have brought devastating Covid surges that took hundreds of thousands of lives and pushed hospitals to the breaking point. But US health officials say the nation is in a much different place today due to the arsenal of tools doctors now have to fight the virus. “We are in a much, much better place. We are in a better place because people have gotten vaccinated and boosted. We’ve got treatments that are widely available,” Dr. Ashish Jha, White House Covid response coordinator, said in an August interview with the US Chamber of Commerce. The Centers for Disease Control and Prevention, in a report published in early August, said high levels of immunity in the US population from vaccination and infection have substantially reduced the threat of hospitalization and death from Covid. The CDC ended its quarantine recommendations for people exposed to the virus last month. Public health officials are calling on people to stay up to date on their vaccines, but are largely leaving it up to individuals to decide what other precautions they should take based on their health history, risk tolerance and how much Covid is spreading in their communities. The CDC is taking a more targeted approach that focuses on making sure those at the highest risk of severe illness have access to vaccines, antiviral treatments and other therapeutics to protect their health.
CNBC Health & Science
Read CNBC’s latest global health coverage: Many people haven’t had a vaccine dose in months, which means their immune protection against the virus is waning off with some studies showing three shots of the original vaccines were just 19% effective at preventing Covid infection after five months. At the same time, more transmissible omicron subvariants are spreading. It’s creating a perfect storm ahead of the cold weather months and holidays that force people indoors in close proximity to each other and a highly contagious airborne pathogen. Even with all the tools the US has available, Covid infections, hospitalizations and deaths have plateaued at stubbornly high levels over the summer. The US is gearing up for a booster campaign after Labor Day with reformulated vaccines that target both the original strain of the virus that emerged in Wuhan, China, in 2019 and omicron BA.5, the dominant variant in circulation. Public health officials believe the reformulated boosters will provide more durable protection against infection and help avert a major surge that taxes hospitals. “It’s going to be really, really important for people to get this updated, new, very specific Covid vaccine because I think it’s going to help a lot in preventing infections, and I think it’s going to help a lot in keeping people out of the hospital,” Jha said. The US has so far secured 171 million doses of Pfizer’s and Moderna’s new booster shots that target omicron.
New boosters
The reformulated boosters could reduce infections by 2.4 million, hospitalizations by 137,000 and deaths by 9,700 from August through May of 2023 if a new variant doesn’t emerge, according to a projection by a team of scientists who forecast the trajectory of the pandemic, called the Covid-19 Scenario Modeling Hub. But the projection is based on optimistic assumptions about booster coverage and efficacy, according to the scientists. The model assumes that the shots will prove 80% effective at preventing illness, the vaccination campaign will ramp up quickly and the public will broadly embrace the new boosters. But many people in the US still haven’t gotten their first booster with the old vaccine yet, and it’s not clear that these individuals will be more willing to take the new shots. About 76% of people ages 12 and older have received their first two vaccine doses, according to CDC data. Out of those people, about half have gotten their third shot. It’s also not clear how effective the new omicron boosters will be in the real world yet. The Food and Drug Administration authorized the shots on Wednesday without results from human trials on the BA.5 shots. But Dr. Peter Marks, head of the FDA office responsible for reviewing vaccines, said the available data suggests the shots will provide substantially better protection. Public health officials are working under the assumption that the US will face some version of omicron in the fall, which is why the new vaccines target BA.5. But there is always the risk that a new variant outside the omicron lineage will emerge that can evade the new shots. If Covid mutates in a way that gives life to a new, dominant variant and boosters are slow to get out to the public, the US could suffer 1.3 million hospitalizations and 181,000 deaths over the next nine months, according to the scientists’ most pessimistic scenario . But Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, said the reality is that nobody really knows what will happen in the fall. “We don’t know,” he said.
Most Americans have antibodies
Ali Mokdad, an epidemiologist at the Institute for Health Metrics and Evaluation at the University of Washington, said his group is predicting a rise in Covid cases, deaths and hospitalizations this fall. “But the rise in mortality and hospitalization will not be similar to what we have seen before, simply because most people have some kind of immunity against illness,” Mokdad said. About 95% of people ages 16 and older in the US, in fact, have Covid antibodies of some sort — either from vaccination or prior infection, according to a CDC survey of blood donor data. This means more people in the US have at least some protection against severe disease and death from Covid than at any other point in the pandemic. Previous infection, vaccination alone and vaccination plus infection didn’t necessarily keep people from getting sick, but they all showed more than 70% effectiveness against developing a really severe case or dying from omicron BA.2, according to a study published in the New England Journal of Medicine by Weill Cornell Medicine in Qatar. The study examined the medical records of 100,000 individuals in Qatar from December 2021 through February 2022. But the Qatar study may not translate well to the US population, which has a large elderly population and many people with preexisting medical conditions, like obesity or diabetes. Qatar on the other hand has a very young population — only 9% of its residents are age 50 or older compared to more than a third of all Americans. Omicron has also continued to evolve into more transmissible and immune-evasive subvariants. The BA.5 subvariant became dominant this summer, pushing out BA.2. Although BA.5 has not been associated with more severe disease, it is more effective at evading immunity and infecting people who are vaccinated or who have recovered from Covid. “BA.5 is the most contagious, certainly the most immune evasive variant we’ve seen,” Jha told NBC News in July. “That means if you were infected earlier this you’re still at very high risk of reinfection. It means if you’ve not been vaccinated recently you have a very high risk of having a breakthrough.”
Waning immunity
While the CDC previously thought that infection provided about 90 days of protection, Jha told reporters in July that breakthrough infections have become more common and are happening earlier with BA.5. He said it’s unclear how long immunity lasts after recovering from a BA.5 infection. Osterholm said the pandemic has entered another unprecedented period. Previously, infections have surged to high peaks and then steeply declined before the next wave. But for the past three months, infections, hospitalizations and deaths have plateaued at a high level with no sign of another variant displacing BA.5, he said. “We’re seeing now more and more people are on their second and third episodes of this,” Osterholm said. “What is the interaction between increasing vaccination, natural infection and immunity related to infection? We just don’t know,” he said. It’s unclear whether the current pattern of transmission will continue or if the US will face another wave, Osterholm said. Right now, the US is averaging more than 88,000 new infections daily, which is likely a vast undercount because people testing positive at home isn’t picked up by the official data. More than 32,000 people in total are hospitalized across the US with Covid right now, and an average of nearly 400 people are still dying every day from the virus, according to data from the CDC and the Health and Human Services Department. That’s a significant improvement from the peak of the outbreak in the winter of 2021 when more than 3,000 people died a day on average. Although milder today than those early days of the pandemic, Covid is still killing at four or five times the fatality rate of the flu, Jha told the Chamber. “If everybody was up to date on their vaccines and people got treated with Paxlovid as they’re supposed to deaths would go to close to zero across America,” Jha said. Hospitalizations are down 75% and deaths are down 85% from the peak of last winter’s omicron surge. But if deaths remain at their current level through next year, more than 140,000 people would succumb to the virus, which would still make Covid one of the 10 leading causes of death in the US “Will we continue to see this kind of activity maintained for some time? People will say it can’t go on endlessly because people will be infected and develop immunity. But what happens with waning immunity?” Osterholm said.
Focus on the vulnerable
Many elderly people and individuals with weak immune systems remain vulnerable to the virus. The rate of hospitalization and death from Covid has increased…
title: “Us Health Officials Brace For Another Fall Covid Surge But With Fewer Deaths Klmat” ShowToc: true date: “2022-11-23” author: “Bruce Crosson”
Liao Pan | China News Service | Getty Images Fall is on the horizon and public health officials are again bracing for another wave of Covid cases. Over the past two years, fall and winter have brought devastating Covid surges that took hundreds of thousands of lives and pushed hospitals to the breaking point. But US health officials say the nation is in a much different place today due to the arsenal of tools doctors now have to fight the virus. “We are in a much, much better place. We are in a better place because people have gotten vaccinated and boosted. We’ve got treatments that are widely available,” Dr. Ashish Jha, White House Covid response coordinator, said in an August interview with the US Chamber of Commerce. The Centers for Disease Control and Prevention, in a report published in early August, said high levels of immunity in the US population from vaccination and infection have substantially reduced the threat of hospitalization and death from Covid. The CDC ended its quarantine recommendations for people exposed to the virus last month. Public health officials are calling on people to stay up to date on their vaccines, but are largely leaving it up to individuals to decide what other precautions they should take based on their health history, risk tolerance and how much Covid is spreading in their communities. The CDC is taking a more targeted approach that focuses on making sure those at the highest risk of severe illness have access to vaccines, antiviral treatments and other therapeutics to protect their health.
CNBC Health & Science
Read CNBC’s latest global health coverage: Many people haven’t had a vaccine dose in months, which means their immune protection against the virus is waning off with some studies showing three shots of the original vaccines were just 19% effective at preventing Covid infection after five months. At the same time, more transmissible omicron subvariants are spreading. It’s creating a perfect storm ahead of the cold weather months and holidays that force people indoors in close proximity to each other and a highly contagious airborne pathogen. Even with all the tools the US has available, Covid infections, hospitalizations and deaths have plateaued at stubbornly high levels over the summer. The US is gearing up for a booster campaign after Labor Day with reformulated vaccines that target both the original strain of the virus that emerged in Wuhan, China, in 2019 and omicron BA.5, the dominant variant in circulation. Public health officials believe the reformulated boosters will provide more durable protection against infection and help avert a major surge that taxes hospitals. “It’s going to be really, really important for people to get this updated, new, very specific Covid vaccine because I think it’s going to help a lot in preventing infections, and I think it’s going to help a lot in keeping people out of the hospital,” Jha said. The US has so far secured 171 million doses of Pfizer’s and Moderna’s new booster shots that target omicron.
New boosters
The reformulated boosters could reduce infections by 2.4 million, hospitalizations by 137,000 and deaths by 9,700 from August through May of 2023 if a new variant doesn’t emerge, according to a projection by a team of scientists who forecast the trajectory of the pandemic, called the Covid-19 Scenario Modeling Hub. But the projection is based on optimistic assumptions about booster coverage and efficacy, according to the scientists. The model assumes that the shots will prove 80% effective at preventing illness, the vaccination campaign will ramp up quickly and the public will broadly embrace the new boosters. But many people in the US still haven’t gotten their first booster with the old vaccine yet, and it’s not clear that these individuals will be more willing to take the new shots. About 76% of people ages 12 and older have received their first two vaccine doses, according to CDC data. Out of those people, about half have gotten their third shot. It’s also not clear how effective the new omicron boosters will be in the real world yet. The Food and Drug Administration authorized the shots on Wednesday without results from human trials on the BA.5 shots. But Dr. Peter Marks, head of the FDA office responsible for reviewing vaccines, said the available data suggests the shots will provide substantially better protection. Public health officials are working under the assumption that the US will face some version of omicron in the fall, which is why the new vaccines target BA.5. But there is always the risk that a new variant outside the omicron lineage will emerge that can evade the new shots. If Covid mutates in a way that gives life to a new, dominant variant and boosters are slow to get out to the public, the US could suffer 1.3 million hospitalizations and 181,000 deaths over the next nine months, according to the scientists’ most pessimistic scenario . But Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, said the reality is that nobody really knows what will happen in the fall. “We don’t know,” he said.
Most Americans have antibodies
Ali Mokdad, an epidemiologist at the Institute for Health Metrics and Evaluation at the University of Washington, said his group is predicting a rise in Covid cases, deaths and hospitalizations this fall. “But the rise in mortality and hospitalization will not be similar to what we have seen before, simply because most people have some kind of immunity against illness,” Mokdad said. About 95% of people ages 16 and older in the US, in fact, have Covid antibodies of some sort — either from vaccination or prior infection, according to a CDC survey of blood donor data. This means more people in the US have at least some protection against severe disease and death from Covid than at any other point in the pandemic. Previous infection, vaccination alone and vaccination plus infection didn’t necessarily keep people from getting sick, but they all showed more than 70% effectiveness against developing a really severe case or dying from omicron BA.2, according to a study published in the New England Journal of Medicine by Weill Cornell Medicine in Qatar. The study examined the medical records of 100,000 individuals in Qatar from December 2021 through February 2022. But the Qatar study may not translate well to the US population, which has a large elderly population and many people with preexisting medical conditions, like obesity or diabetes. Qatar on the other hand has a very young population — only 9% of its residents are age 50 or older compared to more than a third of all Americans. Omicron has also continued to evolve into more transmissible and immune-evasive subvariants. The BA.5 subvariant became dominant this summer, pushing out BA.2. Although BA.5 has not been associated with more severe disease, it is more effective at evading immunity and infecting people who are vaccinated or who have recovered from Covid. “BA.5 is the most contagious, certainly the most immune evasive variant we’ve seen,” Jha told NBC News in July. “That means if you were infected earlier this you’re still at very high risk of reinfection. It means if you’ve not been vaccinated recently you have a very high risk of having a breakthrough.”
Waning immunity
While the CDC previously thought that infection provided about 90 days of protection, Jha told reporters in July that breakthrough infections have become more common and are happening earlier with BA.5. He said it’s unclear how long immunity lasts after recovering from a BA.5 infection. Osterholm said the pandemic has entered another unprecedented period. Previously, infections have surged to high peaks and then steeply declined before the next wave. But for the past three months, infections, hospitalizations and deaths have plateaued at a high level with no sign of another variant displacing BA.5, he said. “We’re seeing now more and more people are on their second and third episodes of this,” Osterholm said. “What is the interaction between increasing vaccination, natural infection and immunity related to infection? We just don’t know,” he said. It’s unclear whether the current pattern of transmission will continue or if the US will face another wave, Osterholm said. Right now, the US is averaging more than 88,000 new infections daily, which is likely a vast undercount because people testing positive at home isn’t picked up by the official data. More than 32,000 people in total are hospitalized across the US with Covid right now, and an average of nearly 400 people are still dying every day from the virus, according to data from the CDC and the Health and Human Services Department. That’s a significant improvement from the peak of the outbreak in the winter of 2021 when more than 3,000 people died a day on average. Although milder today than those early days of the pandemic, Covid is still killing at four or five times the fatality rate of the flu, Jha told the Chamber. “If everybody was up to date on their vaccines and people got treated with Paxlovid as they’re supposed to deaths would go to close to zero across America,” Jha said. Hospitalizations are down 75% and deaths are down 85% from the peak of last winter’s omicron surge. But if deaths remain at their current level through next year, more than 140,000 people would succumb to the virus, which would still make Covid one of the 10 leading causes of death in the US “Will we continue to see this kind of activity maintained for some time? People will say it can’t go on endlessly because people will be infected and develop immunity. But what happens with waning immunity?” Osterholm said.
Focus on the vulnerable
Many elderly people and individuals with weak immune systems remain vulnerable to the virus. The rate of hospitalization and death from Covid has increased…
title: “Us Health Officials Brace For Another Fall Covid Surge But With Fewer Deaths Klmat” ShowToc: true date: “2022-10-21” author: “Ella Ross”
Liao Pan | China News Service | Getty Images Fall is on the horizon and public health officials are again bracing for another wave of Covid cases. Over the past two years, fall and winter have brought devastating Covid surges that took hundreds of thousands of lives and pushed hospitals to the breaking point. But US health officials say the nation is in a much different place today due to the arsenal of tools doctors now have to fight the virus. “We are in a much, much better place. We are in a better place because people have gotten vaccinated and boosted. We’ve got treatments that are widely available,” Dr. Ashish Jha, White House Covid response coordinator, said in an August interview with the US Chamber of Commerce. The Centers for Disease Control and Prevention, in a report published in early August, said high levels of immunity in the US population from vaccination and infection have substantially reduced the threat of hospitalization and death from Covid. The CDC ended its quarantine recommendations for people exposed to the virus last month. Public health officials are calling on people to stay up to date on their vaccines, but are largely leaving it up to individuals to decide what other precautions they should take based on their health history, risk tolerance and how much Covid is spreading in their communities. The CDC is taking a more targeted approach that focuses on making sure those at the highest risk of severe illness have access to vaccines, antiviral treatments and other therapeutics to protect their health.
CNBC Health & Science
Read CNBC’s latest global health coverage: Many people haven’t had a vaccine dose in months, which means their immune protection against the virus is waning off with some studies showing three shots of the original vaccines were just 19% effective at preventing Covid infection after five months. At the same time, more transmissible omicron subvariants are spreading. It’s creating a perfect storm ahead of the cold weather months and holidays that force people indoors in close proximity to each other and a highly contagious airborne pathogen. Even with all the tools the US has available, Covid infections, hospitalizations and deaths have plateaued at stubbornly high levels over the summer. The US is gearing up for a booster campaign after Labor Day with reformulated vaccines that target both the original strain of the virus that emerged in Wuhan, China, in 2019 and omicron BA.5, the dominant variant in circulation. Public health officials believe the reformulated boosters will provide more durable protection against infection and help avert a major surge that taxes hospitals. “It’s going to be really, really important for people to get this updated, new, very specific Covid vaccine because I think it’s going to help a lot in preventing infections, and I think it’s going to help a lot in keeping people out of the hospital,” Jha said. The US has so far secured 171 million doses of Pfizer’s and Moderna’s new booster shots that target omicron.
New boosters
The reformulated boosters could reduce infections by 2.4 million, hospitalizations by 137,000 and deaths by 9,700 from August through May of 2023 if a new variant doesn’t emerge, according to a projection by a team of scientists who forecast the trajectory of the pandemic, called the Covid-19 Scenario Modeling Hub. But the projection is based on optimistic assumptions about booster coverage and efficacy, according to the scientists. The model assumes that the shots will prove 80% effective at preventing illness, the vaccination campaign will ramp up quickly and the public will broadly embrace the new boosters. But many people in the US still haven’t gotten their first booster with the old vaccine yet, and it’s not clear that these individuals will be more willing to take the new shots. About 76% of people ages 12 and older have received their first two vaccine doses, according to CDC data. Out of those people, about half have gotten their third shot. It’s also not clear how effective the new omicron boosters will be in the real world yet. The Food and Drug Administration authorized the shots on Wednesday without results from human trials on the BA.5 shots. But Dr. Peter Marks, head of the FDA office responsible for reviewing vaccines, said the available data suggests the shots will provide substantially better protection. Public health officials are working under the assumption that the US will face some version of omicron in the fall, which is why the new vaccines target BA.5. But there is always the risk that a new variant outside the omicron lineage will emerge that can evade the new shots. If Covid mutates in a way that gives life to a new, dominant variant and boosters are slow to get out to the public, the US could suffer 1.3 million hospitalizations and 181,000 deaths over the next nine months, according to the scientists’ most pessimistic scenario . But Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, said the reality is that nobody really knows what will happen in the fall. “We don’t know,” he said.
Most Americans have antibodies
Ali Mokdad, an epidemiologist at the Institute for Health Metrics and Evaluation at the University of Washington, said his group is predicting a rise in Covid cases, deaths and hospitalizations this fall. “But the rise in mortality and hospitalization will not be similar to what we have seen before, simply because most people have some kind of immunity against illness,” Mokdad said. About 95% of people ages 16 and older in the US, in fact, have Covid antibodies of some sort — either from vaccination or prior infection, according to a CDC survey of blood donor data. This means more people in the US have at least some protection against severe disease and death from Covid than at any other point in the pandemic. Previous infection, vaccination alone and vaccination plus infection didn’t necessarily keep people from getting sick, but they all showed more than 70% effectiveness against developing a really severe case or dying from omicron BA.2, according to a study published in the New England Journal of Medicine by Weill Cornell Medicine in Qatar. The study examined the medical records of 100,000 individuals in Qatar from December 2021 through February 2022. But the Qatar study may not translate well to the US population, which has a large elderly population and many people with preexisting medical conditions, like obesity or diabetes. Qatar on the other hand has a very young population — only 9% of its residents are age 50 or older compared to more than a third of all Americans. Omicron has also continued to evolve into more transmissible and immune-evasive subvariants. The BA.5 subvariant became dominant this summer, pushing out BA.2. Although BA.5 has not been associated with more severe disease, it is more effective at evading immunity and infecting people who are vaccinated or who have recovered from Covid. “BA.5 is the most contagious, certainly the most immune evasive variant we’ve seen,” Jha told NBC News in July. “That means if you were infected earlier this you’re still at very high risk of reinfection. It means if you’ve not been vaccinated recently you have a very high risk of having a breakthrough.”
Waning immunity
While the CDC previously thought that infection provided about 90 days of protection, Jha told reporters in July that breakthrough infections have become more common and are happening earlier with BA.5. He said it’s unclear how long immunity lasts after recovering from a BA.5 infection. Osterholm said the pandemic has entered another unprecedented period. Previously, infections have surged to high peaks and then steeply declined before the next wave. But for the past three months, infections, hospitalizations and deaths have plateaued at a high level with no sign of another variant displacing BA.5, he said. “We’re seeing now more and more people are on their second and third episodes of this,” Osterholm said. “What is the interaction between increasing vaccination, natural infection and immunity related to infection? We just don’t know,” he said. It’s unclear whether the current pattern of transmission will continue or if the US will face another wave, Osterholm said. Right now, the US is averaging more than 88,000 new infections daily, which is likely a vast undercount because people testing positive at home isn’t picked up by the official data. More than 32,000 people in total are hospitalized across the US with Covid right now, and an average of nearly 400 people are still dying every day from the virus, according to data from the CDC and the Health and Human Services Department. That’s a significant improvement from the peak of the outbreak in the winter of 2021 when more than 3,000 people died a day on average. Although milder today than those early days of the pandemic, Covid is still killing at four or five times the fatality rate of the flu, Jha told the Chamber. “If everybody was up to date on their vaccines and people got treated with Paxlovid as they’re supposed to deaths would go to close to zero across America,” Jha said. Hospitalizations are down 75% and deaths are down 85% from the peak of last winter’s omicron surge. But if deaths remain at their current level through next year, more than 140,000 people would succumb to the virus, which would still make Covid one of the 10 leading causes of death in the US “Will we continue to see this kind of activity maintained for some time? People will say it can’t go on endlessly because people will be infected and develop immunity. But what happens with waning immunity?” Osterholm said.
Focus on the vulnerable
Many elderly people and individuals with weak immune systems remain vulnerable to the virus. The rate of hospitalization and death from Covid has increased…
title: “Us Health Officials Brace For Another Fall Covid Surge But With Fewer Deaths Klmat” ShowToc: true date: “2022-11-04” author: “Betty Korbal”
Liao Pan | China News Service | Getty Images Fall is on the horizon and public health officials are again bracing for another wave of Covid cases. Over the past two years, fall and winter have brought devastating Covid surges that took hundreds of thousands of lives and pushed hospitals to the breaking point. But US health officials say the nation is in a much different place today due to the arsenal of tools doctors now have to fight the virus. “We are in a much, much better place. We are in a better place because people have gotten vaccinated and boosted. We’ve got treatments that are widely available,” Dr. Ashish Jha, White House Covid response coordinator, said in an August interview with the US Chamber of Commerce. The Centers for Disease Control and Prevention, in a report published in early August, said high levels of immunity in the US population from vaccination and infection have substantially reduced the threat of hospitalization and death from Covid. The CDC ended its quarantine recommendations for people exposed to the virus last month. Public health officials are calling on people to stay up to date on their vaccines, but are largely leaving it up to individuals to decide what other precautions they should take based on their health history, risk tolerance and how much Covid is spreading in their communities. The CDC is taking a more targeted approach that focuses on making sure those at the highest risk of severe illness have access to vaccines, antiviral treatments and other therapeutics to protect their health.
CNBC Health & Science
Read CNBC’s latest global health coverage: Many people haven’t had a vaccine dose in months, which means their immune protection against the virus is waning off with some studies showing three shots of the original vaccines were just 19% effective at preventing Covid infection after five months. At the same time, more transmissible omicron subvariants are spreading. It’s creating a perfect storm ahead of the cold weather months and holidays that force people indoors in close proximity to each other and a highly contagious airborne pathogen. Even with all the tools the US has available, Covid infections, hospitalizations and deaths have plateaued at stubbornly high levels over the summer. The US is gearing up for a booster campaign after Labor Day with reformulated vaccines that target both the original strain of the virus that emerged in Wuhan, China, in 2019 and omicron BA.5, the dominant variant in circulation. Public health officials believe the reformulated boosters will provide more durable protection against infection and help avert a major surge that taxes hospitals. “It’s going to be really, really important for people to get this updated, new, very specific Covid vaccine because I think it’s going to help a lot in preventing infections, and I think it’s going to help a lot in keeping people out of the hospital,” Jha said. The US has so far secured 171 million doses of Pfizer’s and Moderna’s new booster shots that target omicron.
New boosters
The reformulated boosters could reduce infections by 2.4 million, hospitalizations by 137,000 and deaths by 9,700 from August through May of 2023 if a new variant doesn’t emerge, according to a projection by a team of scientists who forecast the trajectory of the pandemic, called the Covid-19 Scenario Modeling Hub. But the projection is based on optimistic assumptions about booster coverage and efficacy, according to the scientists. The model assumes that the shots will prove 80% effective at preventing illness, the vaccination campaign will ramp up quickly and the public will broadly embrace the new boosters. But many people in the US still haven’t gotten their first booster with the old vaccine yet, and it’s not clear that these individuals will be more willing to take the new shots. About 76% of people ages 12 and older have received their first two vaccine doses, according to CDC data. Out of those people, about half have gotten their third shot. It’s also not clear how effective the new omicron boosters will be in the real world yet. The Food and Drug Administration authorized the shots on Wednesday without results from human trials on the BA.5 shots. But Dr. Peter Marks, head of the FDA office responsible for reviewing vaccines, said the available data suggests the shots will provide substantially better protection. Public health officials are working under the assumption that the US will face some version of omicron in the fall, which is why the new vaccines target BA.5. But there is always the risk that a new variant outside the omicron lineage will emerge that can evade the new shots. If Covid mutates in a way that gives life to a new, dominant variant and boosters are slow to get out to the public, the US could suffer 1.3 million hospitalizations and 181,000 deaths over the next nine months, according to the scientists’ most pessimistic scenario . But Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, said the reality is that nobody really knows what will happen in the fall. “We don’t know,” he said.
Most Americans have antibodies
Ali Mokdad, an epidemiologist at the Institute for Health Metrics and Evaluation at the University of Washington, said his group is predicting a rise in Covid cases, deaths and hospitalizations this fall. “But the rise in mortality and hospitalization will not be similar to what we have seen before, simply because most people have some kind of immunity against illness,” Mokdad said. About 95% of people ages 16 and older in the US, in fact, have Covid antibodies of some sort — either from vaccination or prior infection, according to a CDC survey of blood donor data. This means more people in the US have at least some protection against severe disease and death from Covid than at any other point in the pandemic. Previous infection, vaccination alone and vaccination plus infection didn’t necessarily keep people from getting sick, but they all showed more than 70% effectiveness against developing a really severe case or dying from omicron BA.2, according to a study published in the New England Journal of Medicine by Weill Cornell Medicine in Qatar. The study examined the medical records of 100,000 individuals in Qatar from December 2021 through February 2022. But the Qatar study may not translate well to the US population, which has a large elderly population and many people with preexisting medical conditions, like obesity or diabetes. Qatar on the other hand has a very young population — only 9% of its residents are age 50 or older compared to more than a third of all Americans. Omicron has also continued to evolve into more transmissible and immune-evasive subvariants. The BA.5 subvariant became dominant this summer, pushing out BA.2. Although BA.5 has not been associated with more severe disease, it is more effective at evading immunity and infecting people who are vaccinated or who have recovered from Covid. “BA.5 is the most contagious, certainly the most immune evasive variant we’ve seen,” Jha told NBC News in July. “That means if you were infected earlier this you’re still at very high risk of reinfection. It means if you’ve not been vaccinated recently you have a very high risk of having a breakthrough.”
Waning immunity
While the CDC previously thought that infection provided about 90 days of protection, Jha told reporters in July that breakthrough infections have become more common and are happening earlier with BA.5. He said it’s unclear how long immunity lasts after recovering from a BA.5 infection. Osterholm said the pandemic has entered another unprecedented period. Previously, infections have surged to high peaks and then steeply declined before the next wave. But for the past three months, infections, hospitalizations and deaths have plateaued at a high level with no sign of another variant displacing BA.5, he said. “We’re seeing now more and more people are on their second and third episodes of this,” Osterholm said. “What is the interaction between increasing vaccination, natural infection and immunity related to infection? We just don’t know,” he said. It’s unclear whether the current pattern of transmission will continue or if the US will face another wave, Osterholm said. Right now, the US is averaging more than 88,000 new infections daily, which is likely a vast undercount because people testing positive at home isn’t picked up by the official data. More than 32,000 people in total are hospitalized across the US with Covid right now, and an average of nearly 400 people are still dying every day from the virus, according to data from the CDC and the Health and Human Services Department. That’s a significant improvement from the peak of the outbreak in the winter of 2021 when more than 3,000 people died a day on average. Although milder today than those early days of the pandemic, Covid is still killing at four or five times the fatality rate of the flu, Jha told the Chamber. “If everybody was up to date on their vaccines and people got treated with Paxlovid as they’re supposed to deaths would go to close to zero across America,” Jha said. Hospitalizations are down 75% and deaths are down 85% from the peak of last winter’s omicron surge. But if deaths remain at their current level through next year, more than 140,000 people would succumb to the virus, which would still make Covid one of the 10 leading causes of death in the US “Will we continue to see this kind of activity maintained for some time? People will say it can’t go on endlessly because people will be infected and develop immunity. But what happens with waning immunity?” Osterholm said.
Focus on the vulnerable
Many elderly people and individuals with weak immune systems remain vulnerable to the virus. The rate of hospitalization and death from Covid has increased…
