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The more contagious Omicron subvariant BA.2 is now dominant in the US and likely to cause an ‘uptick’ in cases

Tom Hagler by Tom Hagler
30.03.2022
in Business
The more contagious Omicron subvariant BA.2 is now dominant in the US and likely to cause an ‘uptick’ in cases
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Health worker performs COVID-19 test at drive through facility.BA.2 subvariant accounts for nearly 55% of COVID tests that have undergone genetic sequencing, CDC data shows.

Irfan Khan/Los Angeles Times/Getty Images

  • BA.2, an Omicron subvariant, is dominant in the US, according to CDC data.
  • BA.2 now accounts for nearly 55% of sequenced COVID-19 tests, the data shows.
  • BA.2 is more infectious than the BA.1 subvariant of Omicron, but it’s not more deadly and vaccines still work against it.

A more contagious Omicron subvariant is now dominant in the US, according to the latest data from the Centers for Disease Control and Prevention.

The subvariant, called BA.2, now accounts for nearly 55% of the nation’s COVID-19 tests that have undergone genetic sequencing, the data shows, although levels vary from state-to-state.

BA.2 had already become the most common cause of new COVID-19 infections in northeastern states.

Map showing BA.2 according to statePercentage of BA.2 on sequenced tests.

Centers for Disease Control and Prevention

Dr. Anthony Fauci, President Biden’s chief medical advisor, has said that the subvariant could cause an uptick in cases in the US, but he doesn’t think it would cause another surge.

“The bottom line is we likely will see an uptick in cases as we’ve seen in the European countries, particularly the U.K., where they’ve had the same situation as we’ve had now. They have BA.2. They have a relaxation of some restrictions such as indoor masking and there’s a waning of immunity.” he told ABC News March 20.

In the UK, BA.2 has spread 75% faster than the formerly dominant BA.1 Omicron subvariant, according to official data from the UK Health Security Agency.  But it hasn’t caused more hospitalizations and doesn’t appear to escape the immune response from vaccines or previous infections. Insider has previously reported that lab studies indicate a previous BA.1 infection will offer some protection against BA.2, though it’s unclear how long this protection lasts.

As of Tuesday, the weekly average of new cases per day in the US was 26,000, according to Johns Hopkins University, but the numbers are probably higher as not everyone infected with the virus gets tested. Cases last peaked in January at more than 800,000 cases, the data shows.

Fauci said the “easiest way” to prevent another surge was to get people vaccinated and boosted.

As of Monday, the CDC said that Americans older than 50 with underlying medical conditions, and everyone over 65, “may” get an extra second booster shot to bolster immunity against COVID-19.

About 65% of Americans are fully vaccinated and around 44% of those eligible have had a first booster, CDC data shows.

Read the original article on Business Insider businessinsider?d=yIl2AUoC8zA businessinsider?i=RolJLtbV1TQ:ZhJh97SDK_ businessinsider?i=RolJLtbV1TQ:ZhJh97SDK_ businessinsider?d=qj6IDK7rITs businessinsider?i=RolJLtbV1TQ:ZhJh97SDK_

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