If the omicron variant of the coronavirus is different enough from the original variant, it’s possible that existing vaccines won’t be as effective as they have been. If so, it’s likely that companies ...

SAN FRANCISCO (KGO) -- Now that the omicron variant has reached the U.S. via the Bay Area, the question follows, what happens next for vaccines, public policy and research? UCSF has confirmed they're ...

Recent analyses show that Omicron variants of SARS-CoV-2 more strongly suppress major histocompatibility complex class I expression than previous versions of the virus. Throughout the pandemic, the ...

The latest Omicron subvariant, XBB.1.5, is the most transmissible strain of COVID yet — but does not seem to make people sicker, the World Health Organization has said. XBB.1.5 has spread quickly ...

Continuing to use the Omicron name makes it sound like the virus isn't changing anymore, "but in fact, it's changing hugely." Korber said she's been in public lectures where "very good doctors" have ...

A recent study published in the New England Journal of Medicine evaluated the burden and risk of post-acute sequelae of coronavirus disease 2019 (COVID-19) (PASC) during the pre-Delta, Delta, and ...

The omicron variant’s family tree has grown substantially over the last year. The brood now encompasses a subvariant soup with alphanumeric names such as BA.2, BA.5 and BF.7. The U.S. Centers for ...

A new symptom of COVID-19 is showing up in kids under age 5 who have been infected with the omicron variant. Doctors say cases of croup are on the rise. "What we're seeing with omicron is the virus is ...

Still, experts say it's hard to know how much of XBB.1.5's growth can be attributed to properties of the virus and how much simply to good timing. Coming out of the holidays, during which time people ...

My calculation, verified by calculations of others, reveals that over 133,000 Americans infected with Omicron virus subvariants will die this year and possibly in future years. Only surpassed by heart ...