COVID XBB.1.5 variant now accounts for 43% of all US cases, CDC says

The fast-spreading Omicron subvariant XBB.1.5 is estimated to account for 43% of the COVID-19 cases in the United States for the week ended Jan. 14, data from the Centers for Disease Control and Prevention showed on Friday.

The subvariant accounted for about 30% of cases in the first week of January, higher than the 27.6% the CDC estimated last week.

XBB.1.5, which is related to Omicron, is currently the most transmissible variant. It is an offshoot of XBB, first detected in October, which is itself made from a combination of two other Omicron subvariants.

COVID OMICRON SUBVARIANT XBB: WHY THE ...