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 ...

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 ...

PHILADELPHIA -- To help fend off another wave of Covid-19, people will need a fourth dose of vaccine, Pfizer CEO Albert Bourla said Sunday. "Many variants are coming, and Omicron was the first one ...

To help fend off another wave of Covid-19, people will need a fourth dose of vaccine, Pfizer CEO Albert Bourla said Sunday. "Many variants are coming, and Omicron was the first one that was able to ...

Video above: FDA votes to authorize more COVID-19 boosters, mix-and-matching doses in some casesA booster dose of the Pfizer/BioNTech coronavirus vaccine was found to have a high efficacy — 95.6% — ...

A single shot of the Pfizer or Oxford vaccine offers dramatic protection against hospital admission and severe disease in older people, according to a new study from Public Health England (PHE).