RESUMEN
BACKGROUND: Vaccine hesitancy is an important public health problem. AIMS: Identifying and understanding COVID-19 vaccine hesitancy may aid future public health messaging. This study, in which we planned to study the determinants of COVID-19 vaccine hesitancy, aims to reveal the relationship between "intolerance of uncertainty," "belief in conspiracy theories," and "COVID-19 phobia" with vaccine hesitancy. METHODS: This is a cross-sectional study conducted during a COVID-19 outbreak. Participants were reached via various social media platforms and e-mailing lists for convenience. Data were collected with an online survey using SurveyMonkey application. "Intolerance of Uncertainty Scale (IUS-12)," "Conspiracy Mentality Scale (CMS)," and "COVID-19 Phobia Scale" were applied to 488 participants. Statistical significance level was considered p < 0.05. RESULTS: Four hundred eighty-eight people between the ages of 18 and 65 participated. Twenty-one participants were excluded from the analysis due to random marking and unreasonable filling times (< 10 min). In this way, analyzes were made with 467 people. We found a positive correlation between the belief in conspiracy theories and vaccine hesitancy (p < 0.05). And also found that individuals with low fear of COVID-19 would hesitate about vaccination (p < 0.05). CONCLUSIONS: Vaccine hesitancy is an important public health problem, and it puts public health at risk, especially during the epidemic period we live in. Therefore, it is important to understand the psychological factors involved in vaccine hesitancy. It would be useful to look for ways to spread accurate information about the vaccine in a healthier way in this case.