Emma K. Accorsi, PhD1,2; Amadea Britton, MD1,2; Katherine E. Fleming-Dutra, MD1; et alZachary R. Smith, MA1; Nong Shang, PhD1; Gordana Derado, PhD1; Joseph Miller, PhD1; Stephanie J. Schrag, DPhil1; Jennifer R. Verani, MD, MPH1 Author Affiliations Article Information JAMA. Published online January 21, 2022. doi:10.1001/jama.2022.0470 Key PointsQuestion What is the association between 3 doses