Posted in Web FDA: Pfizer’s Covid-19 vaccine safe and effective after … February 15, 2021 Pfizer’s Covid-19 vaccine is effective even after one dose. The FDA’s VRBPAC will meet on Thursday to vote on advising the FDA to grant an emergency use authorization for the vaccine. https://www.nbcnews.com/health/health-news/fda-pfizer-s-covid-19-vaccine-safe-effective-after-one-n1250337