WASHINGTON (AP) - As strained U.S. hospitals brace for a new surge of COVID-19 cases caused by the fast-spreading omicron variant, doctors are warning of yet another challenge: the two standard drugs ...

The omicron variant of the coronavirus has been dominant in the U.S. since December, but the version of omicron that drove the major infection surge during the winter now accounts for less than 2 ...

Coronavirus cases in the U.S. are rising again, with the highly contagious omicron subvariants BA.5 and BA.4 behind the latest wave of infections. BA.5 subvariant now accounts for 54% of cases in the ...

Though the Omicron coronavirus variant may have a reputation for causing a much milder form of Covid-19, in January, Dr. Ashley Keilman and other doctors started noticing something that seemed unique ...

This week, the FDA and CDC authorized Pfizer and Moderna to start administering vaccine boosters that have been reengineered to specifically target the Omicron BA.4 and BA.5 variants that caused this ...