The Efficacy of a Brief, Altruism-Eliciting Video Intervention in Enhancing COVID-19 Vaccination Intentions Among a Population-Based Sample of Younger Adults: Randomized Controlled Trial

Patricia Zhu   ^{1, 2 *} , BA, BSc ;   Ovidiu Tatar   ^{1, 3 *} , MSc, MD ;   Gabrielle Griffin-Mathieu   ¹ , BSc ;   Samara Perez   ^{4, 5} , PhD ;   Ben Haward   ¹ , BA ;   Gregory Zimet   ⁶ , PhD ;   Matthew Tunis   ⁷ , PhD ;   Ève Dubé   ⁸ , PhD ;   Zeev Rosberger   ^{1, 2, 5, 9} , PhD

¹ Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada

² Department of Psychiatry, McGill University, Montreal, QC, Canada

³ Research Center, Centre Hospitalier de l’Université de Montréal, Montreal, QC, Canada

⁴ Cedars Cancer Center, McGill University Health Center, Montreal, QC, Canada

⁵ Department of Oncology, McGill University, Montreal, QC, Canada

⁶ Division of Adolescent Medicine, Indiana University School of Medicine, Indianapolis, IN, United States

⁷ National Advisory Committee on Immunization Secretariat, Centre for Immunization Readiness, Public Health Agency of Canada, Ottawa, ON, Canada

⁸ Faculty of Social Sciences; Anthropology, University of Laval, Québec, QC, Canada

⁹ Department of Psychology, McGill University, Montreal, QC, Canada

*these authors contributed equally