NEW YORK -- This holiday season held promise for Americans, many of whom spent Christmas 2020 in quarantine or away from loved ones due to a nasty winter COVID-19 surge. Yet in the last week or so, ...

LONDON — As more cases of the new omicron Covid variant emerge around the world, experts say it's likely that the variant, first identified in South Africa last week, had already been circulating for ...

NEW YORK (WABC) -- Updated government research backs initial data that mixing and matching COVID vaccines is just fine. The National Institutes of Health has now looked at more than 450 people who ...

WASHINGTON -- Many of the world's richest countries have spent the past year hoarding coronavirus vaccines, buying up enough doses to vaccinate their populations several times over and consistently ...

NEW YORK CITY (WABC) -- At least five cases of the COVID-19 omicron variant were reported in New York on Thursday, just hours after the Minnesota Department of Health (MDH) announced a case in a ...

The omicron COVID-19 variant that swept the world in late 2021 and early 2022 is not as likely to cause long COVID in those who get infected, a study released Thursday determined. The study was ...

Official COVID-19 case metrics severely undercount the true number of infections, leaving the United States with a critical blind spot as the most transmissible coronavirus variant yet takes hold. The ...

WEDNESDAY MORNING HEADLINES The BA.2 omicron subvariant has been found in North Carolina, according to CDC data. While officials say the variant is not likely to cause more severe disease than the ...