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, ...

The BA.2.75 sublineage of the B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may escape neutralizing antibodies. The BA.2.75 sublineage (primarily the BA.2 ...

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 ...

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 ...

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 ...

Many vaccinated kids experienced breakthrough infections during the omicron surge, though protection against hospitalization remained stronger, a large new government-funded study found.The study ...

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 ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. Hybrid immunity from prior omicron infection and at ...

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