Omicron Variant

Here's where you're most at risk for getting an infection with BA.4 and B.5 circulating right now, according to experts.
The omicron subvariant BA.2.12.1 is poised to be the next dominant strain in the U.S. Mutations appear to have helped it replicate better and resist prior immunity.
The highly contagious coronavirus variant made up 36.5% of total U.S. cases last week, up from 26.6% the week before.
The new BA.2.12.1 variant accounted for 19% of COVID cases in the U.S. last week, sharply increasing its spread from the week before.
How long do antibodies last with an additional dose? Should you time the shot to COVID waves or social plans? Here's what to know.
New strains of the virus will likely keep emerging. This is what you should keep in mind when they do.
From monoclonal antibodies to antivirals, this guide has everything you need to know about addressing an infection.
The new omicron subvariant is now the dominant strain globally. Here are the signs to watch for.
The new omicron subvariant is the dominant strain circulating around the world. Here's what experts know about reinfection.
The U.S. will likely see an uptick in cases caused by the omicron descendant BA.2 starting in the next few weeks.