The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...

Many of us have heard about the different variants of the SARS-CoV-2 virus that was reported for the first time in Wuhan, China, in December 2019 and has spread throughout the world, among them the ...

LONDON — A newly-discovered mutation of the delta variant is being investigated in the U.K. amid worries that it could make the virus even more transmissible and undermine Covid-19 vaccines further.

The fast-spreading delta variant of the coronavirus has been gaining traction worldwide since it was first detected in India. It’s a version of the coronavirus that has been found in more than 80 ...

Vaccination was shown to lower risk of developing severe COVID-19 in both variants, with the largest difference in risk observed in patients aged 40 to 59 years. Patients infected with the SARS-CoV-2 ...

The World Health Organization and the Centers for Disease Control and Prevention have both designated beta as a “variant of concern.” ...

Health officials from South Korea’s Disease Control and Prevention Agency reported on Tuesday that they had confirmed an additional two cases of a new, worrying coronavirus variant. So far, relatively ...