NEW YORK (WABC) -- New York City health officials issued a new mask advisory on Monday, strongly recommending all residents -- regardless of vaccination status -- wear masks in all public indoor ...

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 ...

NEW YORK -- As Americans brace for the possibility of another difficult winter ahead in the nation's fight against coronavirus, there is a renewed sense of urgency to get as many people inoculated and ...

FORT BEND COUNTY, Texas (KTRK) -- More cases of the omicron variant of COVID-19 have been detected in the Houston area. Now, it has made its way to Fort Bend County. The new three cases were detected ...

SAN FRANCISCO -- There's a new "subvariant" of the omicron variant that's been spreading across Europe and the U.S. Preliminary data shows it's more contagious than omicron. Scientist have named it BA ...

NEWARK, Calif. (KGO) -- The race is underway to produce and use the omicron variant's DNA to determine how well existing vaccines work against it, ahead of the first case surfacing in the U.S. The Bay ...

For nearly two years, day after day, under exhausting and often dangerous conditions, health care workers across the country have continued to care for the nation's sickest Americans who have fallen ...

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 ...

FRESNO, Calif. (KFSN) -- The state is now helping track a new COVID strain in Fresno County. The Omicron variant hasn't yet been identified in local cases but health officials will now have a much ...

LOS ANGELES (KABC) -- Los Angeles County health officials on Wednesday reported an additional case of the omicron COVID-19 variant, saying the case is possibly the result of local transmission, unlike ...