
Omicron BA.2 overall makes up more than 90% of COVID variants in U.S.
© Reuters. FILE PHOTO: A man is given a coronavirus disease (COVID-19) test at pop-up testing site in New York City, U.S., April 11, 2022. REUTERS/Brendan McDermid/File Photo (Reuters) -The BA.2 sub-variant of Omicron and […]