Omicron subvariant gains more ground in U.S. to account for 49.1% of new COVID cases, CDC data show
The XBB.1.5 omicron subvariant that became dominant in the U.S. last week has gained more ground, according to data from the nation’s main health agency, accounting for 49.1%…
Read more Omicron subvariant gains more ground in U.S. to account for 49.1% of new COVID cases, CDC data show