World BA.2 Accounts for Over Half of New U.S. Cases, C.D.C. Estimates March 29, 2022March 30, 2022Adeel HassanComments Off on BA.2 Accounts for Over Half of New U.S. Cases, C.D.C. Estimates Scientists have been keeping an eye on BA.2, one of three genetically distinct varieties of the Omicron variant of the coronavirus.
