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A subvariant of the Omicron variant now accounts for over a third of all Covid-19 cases in the US, the CDC said this week.
According to reports, researchers believe the BA.2 subvariant is more transmissible than the original Omicron variant, but may not cause more severe illness.
"It does have increased transmission capability," Dr. Anthony Fauci said Sunday (March 20) on ABC's This Week. "However, when you look at the cases, they do not appear to be any more severe and they do not appear to evade immune responses either from vaccines or prior infections."
Though the CDC said Covid numbers have decreased significantly since January, BA.2 has led to a resurgence in cases across Asia and Europe recently.
In the USA, the CDC said that 34.9% of Covid cases were caused by the BA.2 subvariant during the week ending March 19. The week prior, the sub strain made up an estimated 22.3% of cases in the US.
BA.2 is causing majority of new cases in the Northeast, and is on the rise in other regions across the country.
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