The XFG COVID-19 variant, aka "Stratus," is spreading rapidly in the U.S. as cases climb. Here's what to know about symptoms ...

The new COVID-19 strainalso known as XFG—is a "variant under monitoring" by the World Health Organization (WHO).

COVID-19 viral activity is high in the U.S., according to CDC data. Here's a look at the latest, including test positivity by region.

The KP.3.1.1 COVID-19 variant is the dominant strain of the virus, the latest projections from the Centers for Disease Control and Prevention (CDC) show. The agency's Nowcast data tracker, which ...

The newest COVID-19 variant isn't as scary as it seemed at first and fall booster shots should protect against it and all the other currently circulating variants, new data suggests. In a clinical ...