California has identified a number of cases of BA.2, a sublineage of the Omicron variant of the coronavirus that’s gaining more attention. Four cases of BA.2 have been identified in Los Angeles ...

2, which was first identified in early December and has since spread to 49 countries including the United States. “Among all the lineages of Omicron, this is the one showing a higher increase of ...

After a brief two-month plateau, COVID-19 cases are rising again in the United States, propelled by the Omicron BA.2 subvariant and its more transmissible descendants. The uptick has experts ...

A new version of the Omicron variant of SARS-CoV-2, known as BA.2, has emerged. Although experts are unsure about its effects, they know that it is spreading quickly and has 20 mutations in the ...

This time experts say the increase is likely due to a new variant called BA.2, a subvariant of omicron that's nicknamed the “stealth” variant. This new coronavirus variant appears to be ...

The U.S. national public health agency said on Friday that Omicron subvariants BQ.1 and BQ.1.1 were estimated to account for about 44.2% of COVID-19 cases in the country for the week ending Nov ...

Omicron’s arrival and rapid spread around the world was, and remains, this crisis’s largest inflection point to date. The variant upended scientists’ expectations about SARS-CoV-2’s ...