Pfizer Plan for COVID Booster Shot Raises Safety Concerns
Opinion | On July 8, 2021, Pfizer, Inc. announced it was developing a booster dose for its experimental messenger RNA (mRNA) BNT162b2 biologic for COVID-19. It said that it had observed waning immunity among people who received the standard two-dose regimen of the product. The company said it planned to begin clinical studies of the […]