Scientists and health officials around the world are keeping their eyes on a version of the Omicron variant that has been found in at least 40 countries, including the United States. This version of ...

COVID-19 variant-tracking estimates from the Centers for Disease Control and Prevention (CDC) indicate a new Omicron sub-variant is rapidly becoming prevalent in the United States. Dubbed BA.2.12.1, ...

Paul Griffin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Even as SARS-CoV-2 gets better at spreading and evading some of the immune protection that people have built through infections or vaccination, new variants inevitably arise. That’s been the case with ...

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 ...