Testing the Efficacy of Attitudinal Inoculation Videos to Enhance COVID-19 Vaccine Acceptance: Quasi-Experimental Intervention Trial

Rachael Piltch-Loeb   ^{1, 2} , MSPH, PhD ;   Max Su   ¹ , PhD ;   Brian Hughes   ³ , PhD ;   Marcia Testa   ^{1, 2, 4} , MPH, PhD ;   Beth Goldberg   ⁵ , MA ;   Kurt Braddock   ³ , PhD ;   Cynthia Miller-Idriss   ³ , MPP, PhD ;   Vanessa Maturo   ⁵ , MA, MPA ;   Elena Savoia   ^{1, 2} , MPH, MD

¹ Department of Biostatistics, Harvard TH Chan School of Public Health, Boston, MA, United States

² Emergency Preparedness Research Evaluation & Practice Program, Division of Policy Translation & Leadership Development, Harvard TH Chan School of Public Health, Boston, MA, United States

³ Polarization and Extremism Research and Innovation Lab, American University, Washington, DC, United States

⁴ Massachusetts Association of Health Boards, Wellesley, MA, United States

⁵ Jigsaw, Google LLC, New York, NY, United States