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 ...

NEW YORK - The emergence of the omicron variant has renewed fears of the novel coronavirus developing mutations that would allow it to evade existing vaccines, but the companies Pfizer and BioNTech ...

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 ...

LP.8.1 variant adapted COVID-19 vaccine COMIRNATY is now authorized in Canada for individuals 6 months of age and older. It is expected to be available in Canada in the coming weeks. This season's ...

A Pfizer-BioNTech Covid-19 booster shot appears to provide strong protection against the omicron variant, while the initial two-dose vaccine may be insufficient to prevent infection, the companies ...

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 ...

Newly released data from Pfizer/BioNTech’s ongoing study of their COVID-19 vaccine suggests it is effective at preventing serious symptoms and death at least six months after vaccination. The ...