XBB.1.5 has overtaken earlier omicron subvariants after more than doubling its share of new cases every week in December.
Source
New omicron subvariant has become dominant in U
Closely Watched News
September 1, 2024
Closely Watched News
XBB.1.5 has overtaken earlier omicron subvariants after more than doubling its share of new cases every week in December.
Source
