Abstract
Introduction: YouTube is a very important source of information. The videos in YouTube provide a message with information. The purpose of this article was to assess the main message of available materials about coronavirus disease 2019 (COVID-19) vaccines on YouTube.
 Methods: In this study, the four search terms "COVID-19 vaccine", "COVID-19 vaccination", "Coronavirus vaccine", "Coronavirus vaccination" were scanned on the YouTube (www.youtube.com) media platform on 9 February 2021. We examined video parameters i.e., durations, view counts, likes, dislikes, comments, messages and sources of the 83 videos about COVID-19 vaccine.
 Results: The messages were defined as 52 (62.6%) positive, 12 (14.5%) negative, and 17 (20.5%) ambiguous about getting vaccinated. Significant differences were determined between the message category groups in respect of the like ratio (p = 0.014). Positive group videos were less liked.
 Conclusion: More negative messages about the COVID-19 vaccine were found in media-sourced videos. Negative and ambiguous videos were more attractive to YouTube users. Scientists, policymakers, and community leaders should play a role in disseminating information about COVID-19 vaccine and vaccination.
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