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, ...

Pfizer's and Moderna's omicron boosters reduced the risk of mild illness from the XBB family of subvariants compared to people who did not receive the shot, according to a study from the Centers for ...

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 ...

mRNA COVID-19 vaccines are less effective against Omicron infections than other variants. A study suggests that the additional protection offered by the initial booster shot may be reduced among ...

Pfizer and BioNTech said Friday that the immune responses against omicron BA.4/BA.5 subvariants were "substantially higher" in people who got its new bivalent booster compared with people who received ...

Scientists have developed a novel Omicron-specific mRNA vaccine that offers superior immune protection against two viral subvariants than standard mRNA vaccines. The new vaccine, called Omnivax, ...

The White House said on Tuesday it will ensure Americans continue to have easy access to COVID-19 vaccines, treatments and testing to contain the fast-spreading Omicron BA.5 subvariant that now makes ...

SYRACUSE, N.Y. (WSTM) — With omicron cases of COVID-19 displaying more mild symptoms than previous strains of the coronavirus, experts say it's easy for people to think they have a common cold. The ...