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 ...

The World Health Organization and the Centers for Disease Control and Prevention have both designated beta as a “variant of ...