The Nimbus variant is now the most common strain of COVID currently spreading across the nation, according to the CDC.

A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to ...

Scientists are currently studying how well people are protected against severe disease from XFG. Researchers conducted lab ...

A new COVID-19 strain, referred to as NB.1.8.1 or "Nimbus," first appeared in the U.S. sometime near the end of April and is currently the dominant variant in the U.S. The new variant is said to be ...

As new variant spreads, what's the latest COVID-19 vaccine guidance? It's complicated.