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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 ...

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.

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 ...

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 ...

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 ...

New COVID-19 cases continue to crop up nationwide as new variant XFG makes gains both domestically and abroad. Some regions of the United States are experiencing higher rates of positive COVID-19 ...

A fourth dose of bivalent or monovalent BA.1-adapted BNT162b2 vaccines was safe and elicited robust neutralizing responses in adults aged 18 to 55 years.

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, ...

Questions about the COVID-19 shot abound as federal recommendations shift and medical groups issue clashing guidance.