COVID-19 variant XFG accounted for 0% of U.S. cases in May. By late-June, it became the third-most common strain.

Add Yahoo as a preferred source to see more of our stories on Google. The XFG strain of the virus, nicknamed Stratus, is currently responsible for the majority of Covid cases in the UK - Moment RF ...

Doctors across multiple countries are flagging a painful new COVID-19 symptom tied to a fast-spreading variant: a sore throat so severe that patients compare it to swallowing razor blades. The symptom ...

As the respiratory illness season begins, COVID cases have remained relatively under control in the United States into the beginning of fall. While the United States by and large is experiencing ...

PITTSBURGH, Pa. — Where biology meets technology, researchers are on the hunt for mutations of COVID-19. The Microbial Genome Sequencing Center, also known as MiGS, is one of several in the country ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Yet the sudden rush of testing may not be ...

Four years after infection with the wild-type SARS-CoV-2 strain, up to 60% of health care workers (HCWs) in Switzerland still ...