Biden Administration Plans to Offer Updated Booster Shots in September July 29, 2022 AutoBot Centers for Disease Control and Prevention, Coronavirus (2019-nCoV), Coronavirus Omicron Variant, Food and Drug Administration, Moderna Inc, Pfizer Inc, United States Politics and Government, Vaccination and Immunization 0 With reformulated shots from Pfizer and Moderna on the horizon, the F.D.A. has decided that Americans under 50 should wait to receive second boosters.