Prior to and during the conduction of this systematic review, we identified several other systematic reviews that have addressed the issue of social media and attitudes towards a COVID-19 vaccination.
Prior to conducting our systematic review, we searched PubMed and Web of Science without language restrictions and using keywords such as “social media”, “COVID-19″ and “vaccine” to identify previous evidence in the form of a systematic review on our topic of interest. Finally, studies that explored the fluctuations of vaccination attitudes/opinions gathered from social media identified specific events as significant cofactors that affect and shape vaccination intentions of individuals. Studies that explored the degree of polarization of specific social media contents related to COVID-19 vaccines observed a similar degree of content for both positive and negative tone posted on different social media platforms. Studies that performed thematic analyses of extracted social media data, mainly observed a domination of vaccine hesitant topics. Cross-sectional studies reporting the association between reliance on social media and vaccine intentions mainly observed a negative relationship.
The included studies were categorized into four categories. Overall, the quality of the cross-sectional studies was moderate – 2 studies received 10 stars, 5 studies received 9 stars, 9 studies were evaluated with 8, 12 studies with 7,16 studies with 6, 11 studies with 5, and 6 studies with 4 stars. Of the 2539 records identified, a total of 156 articles fully met the inclusion criteria.
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