Pfizer is about to seek U.S. authorization for a third dose of its COVID-19 vaccine, saying Thursday that another shot within 12 months could dramatically boost immunity and maybe help ward off the ...

The Centers for Disease Control and Prevention on Thursday signed off on booster shots of the Pfizer-BioNTech Covid-19 vaccine for 16- and 17-year-olds for emergency use. The final approval, from CDC ...

A guide to coronavirus vaccination rollout and what you need to know about the authorized vaccines. Some 63.8% of Americans have received both doses of the two-shot Pfizer-BioNTech and Moderna drugs ...

Pfizer said Wednesday that new test results show its coronavirus vaccine is 95% effective, is safe and also protects older people most at risk of dying — the last data needed to seek emergency use of ...