Pfizer starts process to seek US approval of COVID-19 vaccine booster
Pfizer Inc on Wednesday began the process for full approval of its COVID-19 booster dose in the United States.
A healthcare worker hands over doses of the Pfizer-BioNTech COVID-19 vaccine to a doctor at Messe Wien Congress Center, which has been set up as coronavirus disease vaccination centre, in Vienna, Austria February 7, 2021.(photo credit: REUTERS/LISI NIESNER/FILE PHOTO)ByREUTERS
