Omicron sub-variant makes up 23.1% of COVID variants in U.S. - CDC
March 15 (Reuters) - The BA.2 sub-variant of Omicron was estimated to be 23.1% of the coronavirus variants circulating in the United States as of March 12,...
March 15 (Reuters) - The BA.2 sub-variant of Omicron was estimated to be 23.1% of the coronavirus variants circulating in the United States as of March 12,...