COVID-19 transmission

Trending/COVID-19 transmission

COVID-19 omicron subvariant BA.2

What experts know about COVID-19 omicron subvariant BA.2

ROCHESTER, Minn. —  The World Health Organization designated COVID-19 variant B.1.1.529, named omicron, a "variant of concern" on Nov. 26, 2021, and the first confirmed…

Sign up