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, ...

Five years ago, a cluster of people in Wuhan, China, fell sick with a virus never before seen in the world. The germ didn't have a name, nor did the illness it would cause. It wound up setting off a ...

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 ...

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 ...

PHILADELPHIA (WPVI) -- When comparing omicron vs. delta variants, omicron has 53% less risk of hospitalization and 91% less risk of death, CDC Director Dr. Rochelle Walensky revealed on Wednesday.

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 ...