The quickly changing coronavirus has spawned yet another super contagious omicron mutant that’s worrying scientists as i...

A new omicron mutant that is a descendent of the earlier “stealth omicron” has quickly gained ground in the United State...

New research from France adds to evidence that widely used COVID-19 vaccines still offer strong protection against a cor...

Despite its world-class medical system and its vaunted Centers for Disease Control and Prevention, the U.S. fell behind...