More than a year after its promised deadline to investors, drugmaker puts alarming results in federal government's "virtual ...

NEW YORK (WABC) -- Pfizer is asking the FDA to amend its COVID-19 vaccine booster authorization to include all adults 18 and older. In September, the FDA and CDC authorized Pfizer booster shots after ...

A recent study has provided the first side-by-side comparison of how three major COVID-19 vaccine types differ in triggering ...

Pfizer and BioNTech said Wednesday that initial lab tests show that the omicron variant partly escapes protection offered by the companies' two-dose regimen of their COVID-19 vaccine. However, those ...

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 ...

NEW YORK, N.Y. – Pfizer Inc. on Monday released detailed analyses of myocarditis cases linked to its COVID-19 vaccine, ...

The Food and Drug Administration today authorized both Pfizer and Moderna to give a second booster dose of their COVID-19 vaccines to individuals aged 50 and older and to those who are ...

As of Nov. 21, 5.8% of children and 13.8% of adults in the U.S. have received a COVID-19 vaccine during this ...

Pfizer says kid-size doses of its COVID-19 vaccine are safe and nearly 91% effective at preventing infections in elementary school children. Details of the study were posted online Friday. FDA ...