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 ...

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...

The delta coronavirus variant surging across the United States appears to cause more severe illness and spread as easily as chickenpox, according to an internal document from the US Centers for ...

Estimates show the variant accounts for over 51% of all new cases nationwide. A highly contagious variant of the novel coronavirus that was initially identified in India is now the dominant strain in ...

Moderna on Tuesday released preliminary data indicating its vaccine is likely to hold up against several variants of concern, including the Delta variant, which is predicted to become the dominant ...

But Dr. Rochelle Walensky said the delta variant remains the chief concern. With the omicron variant now detected in at least 16 states in the U.S., Centers for Disease Control Director Dr. Rochelle ...

As the highly contagious Delta variant of COVID-19 continues to surge in populations with low vaccination rates, doctors are looking more closely at the origins of another variant. The Epsilon variant ...

NEW YORK (WABC) -- Encouraging new data suggests the omicron variant, while highly contagious, is less severe than the delta variant. The variant has now been found in 21 states, as the U.S. continues ...