BA2

At the height of the Omicron wave in early January, the United States was administering an average of 2.5 million tests per day. That number has dropped to an average of about 540,000 at the start of this week.Credit… Spencer Platt/Getty Images About 30,000 marathoners from 122 countries and all 50 U.S. states will hit […]

CDC Director Rochelle Walensky on Tuesday said there is enough immunity in the U.S. population to provide some protection against the more contagious omicron BA.2 subvariant, which could help stave off another Covid wave that slams hospitals. “The high level of immunity in the population from vaccines, boosters and previous infection will provide some level […]

According to estimates from the Centers for Disease Control and Prevention on Tuesday, the highly contagious Omicron subvariant known as BA.2, which led to a surge of coronavirus cases in Europe, is now the dominant version of the virus in new U.S. cases. Last week, the World Health Organization

Dr. Anthony Fauci, White House Chief Medical Advisor and Director of the NIAID, responds to questions from Sen. Rand Paul (R-KY) at a Senate Health, Education, Labor, and Pensions Committee hearing on Capitol Hill on January 11, 2022 in Washington, D.C. Getty Images U.S. health experts are warning an emerging, highly contagious Covid omicron variant, […]

The U.S. omicron outbreak has dramatically slowed, cutting wait times for tests. But health officials worry a new uptick in cases fueled by the BA.2 variant could be on the way. Joe Raedle/Getty Images hide caption toggle caption Joe Raedle/Getty Images The U.S. omicron outbreak has dramatically slowed, cutting wait times for tests. But health […]

As America casts a wary eye on rising cases caused by the BA.2 subvariant in Europe, the immune status of adults over the age of 65 will be a key indicator of how future variants will affect the US because the risk of severe outcomes rises dramatically with age. “It’s really looking at that older […]


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