News COVID-19 booster shot for Pfizer, Moderna vaccines will be available Sept. 20 August 18, 2021August 18, 2021Courtney Subramanian, USA TODAYComments Off on COVID-19 booster shot for Pfizer, Moderna vaccines will be available Sept. 20 The White House on Wednesday unveiled plans for COVID-19 booster shots this fall for Americans who received the Pfizer or Moderna vaccines.