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

COVID-19 cases are trending up in Colorado and nationwide. The big picture: A summer uptick isn't unusual. But the latest ...

Twelve states are seeing higher positivity rates for COVID-19 tests compared to the rest of the country, according to new ...

CDC tracks rising COVID cases in 45 states; NB.1.8.1 “Nimbus” leads U.S. infections while severe illness remains low.

A new strain of COVID-19 known as Stratus that is spreading worldwide has been detected in Arizona.