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 ...

During an appearance on CBS News Sunday, Pfizer CEO Albert Bourla said that Americans would need a fourth dose of a COVID-19 vaccine to fend off future variants of the virus. Speaking with anchor ...

The Pfizer/BioNTech vaccine generates a robust immune response in 99% of people after one dose, new research suggests. One dose of the vaccine protects against severe disease and after two jabs, ...

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% — ...