Pfizer to ask FDA to authorize COVID vaccine booster
The request comes based on evidence of a greater risk of reinfection six months after the first jab in light of the spread of the Delta variant.
Vials with Pfizer-BioNTech and Moderna coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. (photo credit: REUTERS/DADO RUVIC/ILLUSTRATION/FILE PHOTO)ByREUTERS
