"As these viruses continue to evolve, public health officials watch carefully to see whether new strains will be more easily spread or cause more severe disease, and they are continuously testing to ...

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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 ...

World Health Organization officials said they are still trying to understand why the delta variant is more transmissible and potentially makes people sicker than the original coronavirus strain.

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 ...

Flu has overtaken covid in infections and hospitalizations during the winter respiratory virus season, and their virulence is becoming similar.

Ripping off the Band-Aid once more, folks: COVID-19 is here to stay, and it's spiking just in time to potentially mess with your Valentine's Day plans. Though the pandemic days may be behind most ...

NEW YORK -- This holiday season held promise for Americans, many of whom spent Christmas 2020 in quarantine or away from loved ones due to a nasty winter COVID-19 surge. Yet in the last week or so, ...