Omicron sub-variants BA.4 and BA.5 account for up to 13% of COVID variants in U.S. – CDC
Authors: Mrinalika Roy Reuters The BA.4 and BA.5 sub-variants of Omicron are estimated to make up nearly 5% and 8% of the coronavirus variants in the United States as of June 4, the U.S. Centers for Disease Control and Prevention (CDC) said on Tuesday. The two sublineages, which were added to the World Health Organization’s […]