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

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

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