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 ...

NEW YORK -- What are the symptoms of omicron? Health experts still don't know if the new variant is causing milder COVID-19, but more indicators are emerging. The World Health Organization's top ...

PHILADELPHIA (WPVI) -- Experts are tracking Omicron subvariants that could be more contagious as COVID-19 cases increase around the world. One scientist projected case counts could be five times ...

Even as COVID-19 cases and hospitalizations driven by the omicron subvariant BA.5 continue to fall in the United States, the proportion of infections attributed to other omicron offshoots is rising.

Moderna said on Monday its updated Covid-19 booster generated "significantly higher" neutralizing antibodies against the Omicron BA.4/BA.5 subvariants than its earlier shot. The bivalent booster used ...

SAN FRANCISCO -- Preliminary data out of South Africa is giving the world insight into how strong omicron really is. The South African Medical Research Council just reported this variant may cause ...