BA. 2, the highly contagious omicron subvariant, is now the dominant COVID-19 strain in the U.S., according to data from the CDC. Numbers show the subvariant, also known as “stealth omicron,” ...

Pediatric COVID-19 severity appears to be declining among hospitalized children as Omicron subvariants evolve.

A highly transmissible COVID-19 strain is driving a surge of infections across the United States. Nicknamed 'Stratus,' the XFG strain has been spreading in various parts of US. Recent reports suggest ...

The CDC is now tracking another subvariant of omicron -- BA.2.12.1. BA.2 is still the dominant variant in the U.S., but BA.2.12.1 now accounts for nearly 20% of all new COVID-19 infections in the ...

WASHINGTON -- While the new omicron variant of the COVID-19 virus has not yet been detected in the United States, it will "inevitably" arrive, Dr. Anthony Fauci said Sunday. "We all know when you have ...

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images An alleged warning has spread online for years about a supposed "new COVID-Omicron XBB variant" — a new strain of the ...

Some school systems around the U.S. extended their holiday break Monday or switched back to online instruction because of the explosion in COVID-19 cases, while others pressed ahead with in-person ...

With the latest COVID-19 variant leading to record numbers of cases worldwide, a top infectious disease expert says the virus is undergoing a major shift. Dr. Robert Redfield, the former director of ...

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