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 ...

NEW YORK - Pfizer on Wednesday shared data about a third dose of its COVID-19 vaccine that suggests it "strongly" boosts protection against the more contagious delta variant of the coronavirus, which ...

We all watched the news: a new variant of the SARS-CoV-2 virus was found in India in October 2020, sparking a devastating second wave with more than 400,000 daily infections. This mutation called ...

A new preprint study suggests that Moderna’s COVID-19 vaccine may be significantly more effective against symptomatic disease from the delta variant compared to Pfizer-BioNTech’s vaccine, while the ...

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 ...

NEW YORK, N.Y. — Pfizer announced Wednesday that data shows a third dose of its COVID-19 vaccine can “strongly” boost protection against the highly transmissible delta variant. The pharmaceutical and ...

Johnson & Johnson said Thursday that new data shows that its single-shot COVID-19 vaccine provides protection against the virus for at least eight months and effectively prevents infection from ...

A headline is fueling concern about Johnson and Johnson's one-shot vaccine, and whether it's less effective against the Delta variant. But experts point out the new study, out of NYU's school of ...

LONDON - As the highly contagious delta variant continues to spread, a new, British study shows COVID-19 vaccines are effective against the delta variant, but that their protection decreases over time ...

A third dose of the Pfizer/BioNTech COVID-19 vaccine can "strongly" boost protection against the delta variant -- beyond the protection afforded by the standard two doses, suggests new data released ...