COVID-19 cases are rising across the United States, driven by new variants Stratus (XFG) and Nimbus (NB.1.8.1). While Stratus ...

COVID-19 activity is rising in much of the country. Data shows overall respiratory virus spread is very low in the U.S.

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.