Pfizer seeks full FDA approval of COVID-19 vaccine, awaits OK for adolescents By (0) Full approval and licensing from the FDA would allow Pfizer to market its BNT162b2 coronavirus vaccine directly to customers in the United States. File Photo by Debbie Hill/UPI | License Photo A health worker prepares a vial of the Pfizer COVID-19 vaccine, which is one of three coronavirus vaccines approved for use in the United States. File Photo by Debbie Hill/UPI | License Photo A health worker prepares a dose of Pfizer's COVID-19 vaccine, which is one of three coronavirus vaccines approved for use in the United States. File Photo by Debbie Hill/UPI | License Photo