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 ...

Vaccines for youngest children are expected to be available in June or July In long-awaited data, Pfizer said its three-dose vaccine was 80% effective against symptomatic omicron COVID-19 infection ...

A three-dose regimen of the Pfizer-BioNTech COVID-19 vaccine produces a strong immune response in kids under five, the company says. Pfizer on Monday said a trial examining a third dose of its vaccine ...

Three doses of Pfizer’s COVID-19 vaccine offer strong protection for children younger than 5, the company announced Monday. Pfizer plans to give the data to U.S. regulators later this week in a step ...

Vaccine maker Pfizer said Friday that trials of its vaccine in children ages 2 to 5 show that it did not provide the expected immunity in kids this age, and it is adding a third dose to the regimen.

Pfizer will charge $110 to $130 for a dose of its COVID-19 vaccine once the U.S. government stops buying the shots, but the drugmaker says it expects many people will continue receiving it for free.

Pfizer expects to roughly quadruple the price of its COVID-19 vaccine to between $110 to $130 per dose once the U.S. government’s purchasing program ends early next year, a company official said.