The XFG variant - also known as Stratus - is now behind nearly every Covid case in Ireland, with health officials warning of ...

There's a new surge in Covid cases - partly thanks to a fast-spreading new variant that has a wide range of almost ...

A new COVID-19 variant, known as XFG and nicknamed “Stratus,” has quickly become the dominant strain in the United States, ...

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 ...