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

COVID-19 rates in the Southwestern United States reached 12.5% — the highest in the nation. It comes as California students ...

It's not what we might expect but it is possible to get the sniffles, or worse, in the summer. New data from the U.S. shows ...

CDC wastewater also shows the XFG variant — nicknamed stratus — is most common in the U.S. Stratus can cause a “razor blade” ...

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

The Stratus or XFG variant transmits easily and is spreading worldwide. Stratus is a combination of variants F.7 and LP.8.1.2 ...

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 ...