Traditional and Social Media Usage Associated With COVID-19 Vaccine Uptake in Sapporo, Japan

This study aimed to determine the relationship between specific information source usage and uptake of the coronavirus disease 2019 (COVID-19) vaccine. We analyzed 3348 participants aged 20 to 65 years who were not diagnosed with COVID-19 in a case-control study in Sapporo, Japan. The most prevalent information source on COVID-19 was television (TV; 87.8%), followed by online news sites (74.3%), newspapers (38.7%), websites of public institutions (30.9%), and families (29.7%). Multivariate logistic regression showed that the adjusted odds ratios of incompletion of second vaccinations for users of TV and newspaper to gather COVID-19 information were 0.31 (95% confidence interval [CI] [0.21, 0.44]) and 0.32 (95% CI [0.20, 0.50]), respectively, whereas those for users of books, commercial video sites, Facebook, and "personal blog or bulletin board system" were 3.34 (95% CI [1.58, 7.06]), 2.22 (95% CI [1.44, 3.43]), 2.36 (95% CI [1.24, 4.48]), and 4.81 (95% CI [2.72, 8.48]), respectively. Social media use among older or male participants was associated with lower vaccine uptake.