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

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

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

The "probability" of a COVID-19 epidemic trend growing in California is 99.52%, according to the most recent CDC data.

Federal data shows more emergency department visits for COVID across all ages. Wastewater testing confirms that the new XFG variant that’s been nicknamed stratus is now the most common in the U.S.