Health
A variant of Omicron BA.2 is widespread in the United States and may soon speed up: Shot
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As the proliferation of Omicrons continues to decline in the United States, infectious disease experts are paying attention to more contagious versions of variants that may reintroduce the United States’ desire to return to normal. ..
Known as BA.2, this virus is a highly contagious Omicron variant that appears to spread more easily. It spreads about 30% easily.
Researchers hope that the same will happen in the United States, as BA.2 quickly overtook the original Omicron in South Africa and other countries, causing a second Omicron surge in Denmark.
“Many of us expected it to spread rapidly in the United States as well as in Europe and become a major new variant,” he said. Nathan GruboAssociate Professor of Epidemiology at the Graduate School of Public Health.
So far, that hasn’t happened. Instead, BA.2 spread slowly but steadily, and the Omicron surge continued to disappear. The fear is that spreads may be on a fast-accelerating trajectory in the near future.
BA.2 is currently found from coastal to coastal and accounts for an estimated 3.9% of all new infections nationwide. According to the Centers for Disease Control and Prevention.. It seems to be doubling.
“If it doubles to 8% again, it means we’re in an exponential growth phase, and we may be looking at another wave of COVID-19 coming in the United States,” he said. I am. Samuel SculpeyManager and Director of Pathogen Monitoring, The Rockefeller Foundation.
“And, of course, that’s what we’re really worried about. We’re all at the edge of our seats,” he says.
Some experts believe that BA.2 is unlikely to cause a major new surge. This is because so many people at this point are immunized from previous infections and vaccinations.
“What’s likely is that it may stretch our tail, which may delay the decline of cases, but it probably won’t lead to a new wave of cases.” Says Grubaugh.
Omicron still infects more than 100,000 people in the United States and kills about 2,000 people every day. Therefore, BA.2 does not appear to be more ill than the original Omicron, but it only slows the decline of new cases and makes it more serious. Illness and death.
And in addition to concerns, one of the remaining antibody treatments for COVID-19 May be less effective against BA.2.According to a recent survey.
“Many people will get sick and die from the respiratory tract because of BA.2,” he says. Jeremy RubanAmong virologists at the University of Massachusetts School of Medicine, especially millions of people who have not yet been vaccinated.
Vaccination and previous infections appear to protect people from BA.2, but this version of the virus seems somewhat Good at avoiding the immune system It was the original Omicron. This raises concerns that new cases may drive growth.
And while Ruban agrees with the most likely scenario that BA.2 expands the Omicron wave, he says it is impossible to rule out another potential surge.
“The virus may need to reach around 5-7%, and once such a scaffold is established, the virus will suddenly explode,” says Luban.
Especially when it happens, just as mask obligations and other restrictions have been lifted nationwide and people are really neglected.
“BA.2 has this lurking threat, and before rolling back all missions, we need to make sure this doesn’t matter before telling everyone that it’s safe,” Scarpino said. say.
Otherwise, the country could be blind again.
Sources 2/ https://www.npr.org/sections/health-shots/2022/02/21/1081810074/omicron-ba2-variant-spread The mention sources can contact us to remove/changing this article |
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