• Scott Graupensperger, Devon A Abdallah, and Christine M Lee.
• Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, United States. Electronic address: graups@uw.edu.
• Vaccine. 2021 Apr 8; 39 (15): 2060-2067.

BackgroundVaccination may be critical to curtailing the spread of the SARS-CoV-2 virus responsible for the COVID-19 pandemic, but herd immunity can only be realized with high vaccination coverage. There is a need to identify empirically supported strategies to increase uptake, especially among young adults as this subpopulation has shown relatively poor adherence to physical distancing guidelines. Social norms - estimates of peers' behavior and attitudes - are robust predictors of health behaviors and norms-based intervention strategies may increase COVID vaccine uptake, once available. This study examined the extent that vaccination intentions and attitudes were associated with estimated social norms as an initial proof-of-concept test.MethodIn November of 2020, 647 undergraduate students (46.21% response rate) completed online surveys in which they reported intentions to get COVID and influenza vaccines, perceived importance of these vaccines for young adults, and estimated social norms regarding peers' vaccination behaviors and attitudes.ResultsStudents reported significantly greater intentions to get a COVID vaccine (91.64%) than an influenza vaccine (76.04%), and perceived COVID vaccination as significantly more important than influenza vaccination. The sample generally held strong intentions to receive a COVID vaccine and thought that doing so was of high importance, but participants, on average, perceived that other young adults would be less likely to be vaccinated and would not think vaccination was as important. Multiple regression models indicated that estimated social norms were positively associated with participants' own intentions and perceived importance of getting a COVID vaccine.ConclusionsThese significant associations highlight the potential value in developing and testing norms-based intervention strategies, such as personalized normative feedback, to improve uptake of forthcoming COVID vaccines among young adults.Copyright © 2021 Elsevier Ltd. All rights reserved.

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