ba.2

Scientists worry that a contagious coronavirus variant may soon push cases up in the United States just as it has in Europe and Asia

How different is the BA.2 subvariant of the coronavirus? Not much, says NBC News medical contributor Dr. John Torres. The subvariant has not been labeled as a variant of concern, and it’s not that different from Omicron, Torres says. Here’s a metaphor: if a fully new variant is like the virus putting on a full new outfit, a subvariant is...

Incoming White House COVID-19 Response Coordinator Dr. Ashish Jha talks about the new omicron sub-variant BA.2 and whether the U.S. will see the kind of surge that Europe and Asia are experiencing.