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/BioNTech has initiated its application to the US Food and Drug Administration for full FDA approval of its Covid-19 vaccine for people ages 16 and older, the companies said Friday. This is the ...

PHILADELPHIA -- Pfizer and BioNTech said Tuesday they have submitted Covid-19 vaccine data on children ages 5 to 11 to the US Food and Drug Administration for initial review, but are not yet seeking ...

(AP) – A real-world test of Pfizer’s COVID-19 vaccine in more than half a million people confirms that it’s very effective at preventing serious illness or death, even after one dose. Wednesday’s ...

COVID-19 vaccine recommendations could be changing, according to the U.S. Food and Drug Administration. FDA leaders said on May 20 that clinical trials will be required to approve annual COVID-19 ...