Omicron Variant

The "bivalent" vaccine — meaning it targets two different antigens — is Moderna's leading candidate to have an effective booster ready for fall of 2022, the company said.

The variants — BA.2.12 and BA.2.12.1 — have been detected in New York and other states as well as 5 other countries. One has a mutation that seems to give it an edge in evading the immune system.

Federal health officials are convening with outside advisers April 6 to talk about a vaccine plan, whether that's another booster in the fall, an omicron shot or one that targets more than one strain.

University of Miami researchers have been tracking SARS-CoV-2 variants through genomic sequencing.

The omicron BA.2 variant spreads about 30% more easily and has caused surges in other countries. Its steady increase in the U.S. raises questions about the wisdom of rolling back COVID restrictions.

The CDC says you can end isolation after five days. But emerging research shows with omicron, many people could be infectious for several days past that. So how do you determine if you're good to go?

"Today we call on your administration to do what so many states and other countries already have: accept that COVID-19 is endemic," the dozens of Republicans write in a letter.

Residents and visitors who have had at least two doses of an approved vaccine now only need to fill out a form before entering the U.K. Unvaccinated people must test both before and after arriving.

The Philippines lifted a nearly 2-year ban on fully vaccinated foreign travelers Thursday to boost tourism and related industries as an omicron-fueled surge eases.

U.S. employers added 467,000 jobs last month despite a surge of coronavirus infections. The unemployment rose to 4% from 3.9% in December.

Slammed by COVID-19, many U.S. hospitals have put off essential procedures. Delays are leading to consequences like heart attacks and sending people to emergency rooms to get care.

Unlike other monoclonal antibody therapies, Evusheld is not meant to treat active coronavirus infection. Instead, it's preventative medicine for people with compromised immune systems.