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 ...

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 ...

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 ...

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 ...

Since the CDC limits data reporting on breakthrough COVID-19 infections — those occurring among fully vaccinated people — to those that cause severe disease, mild or asymptomatic infections caused by ...

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 ...

NEW YORK (WABC) -- The CDC reports 67% of adults in the United States have had one dose and 58% are fully vaccinated. A new ABC News-Washington Post poll finds that among those unvaccinated, 74% say ...

PITTSBURGH (KDKA-TV) - A 73-year-old man is recovering at the VA Hospital in Oakland, Pennsylvania after contracting the Delta variant of the COVID-19. There is a critical twist in his story, however: ...

MARSHALLTOWN, Iowa -- As COVID cases continue to surge across the U.S. due to the Delta variant, an Iowa doctor took to social media to urge vaccinations. He started off by saying, "I feel like I ...

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 ...