Which vaccine was the first to receive emergency use authorization for COVID-19?
Q1. Which vaccine was the first to receive emergency use authorization for COVID-19?
Answer: Pfizer-BioNTech (BNT162b2)
Explanation: The Pfizer-BioNTech COVID-19 vaccine (BNT162b2) received the first emergency use authorization from the UK's MHRA on December 2, 2020, followed by the U.S. FDA on December 11, 2020.