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 ...

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 ...

Here’s what to know about this year’s summer COVID wave and why midlife women should be concerned. What Is Causing COVID Cases to Spike? The Nimbus and Stratus variants have mutations that ...

Cases of a new Covid strain have been detected in the UK. Stratus is the latest Covid variant on the scene. It is ‘under monitoring’ by the World Health Organisation.