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, ...

NEW YORK (WABC) -- There are rising concerns about the new omicron variant, as cases have now been confirmed in more than half the U.S. Early anecdotal reports seem to indicate those infected are ...

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 ...

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 ...

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 ...

COVID-19 severity appears to be declining among hospitalized children as the Omicron variant continues to evolve.

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 ...

The question hung in the air like a bad odor, silencing the small group of fully vaccinated and boosted friends and family at my dinner table. "Why not just get omicron and get it over with? It's mild ...