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

The XFG strain, nicknamed "Stratus," is the predominant variant currently circulating. It has been on the rise since May in ...

The “Stratus” variant (XFG) was first identified in January in Southeast Asia. By June, it accounted for 14% of COVID cases ...

A new COVID variant is on the rise amid a nationwide summer surge of cases and it's on track to become the third most common ...

A new COVID variant is on the rise amid a nationwide summer surge of cases. Positive cases in Mississippi are climbing. What ...

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

A new COVID-19 variant is climbing the ranks in the United States, becoming the third-most common strain of the summer. Variant XFG, colloquially known as "Stratus," was first detected in ...

'Stratus' is the new COVID variant growing in the U.S. and the rest of the world. However, COVID-19 cases are down in Minnesota.