Jovanovic, Verica (56566176800)Verica (56566176800)JovanovicMilic, Marija (57202972248)Marija (57202972248)MilicDotlic, Jelena (6504769174)Jelena (6504769174)DotlicCvjetkovic, Smiljana (57194632924)Smiljana (57194632924)CvjetkovicJeremic Stojkovic, Vida (57197634766)Vida (57197634766)Jeremic StojkovicMaksimovic, Natasa (12772951900)Natasa (12772951900)MaksimovicSekulic, Maja (58222752600)Maja (58222752600)SekulicGazibara, Tatjana (36494484100)Tatjana (36494484100)Gazibara2025-06-122025-06-122023https://doi.org/10.1017/S0950268823000614https://www.scopus.com/inward/record.uri?eid=2-s2.0-85156277061&doi=10.1017%2fS0950268823000614&partnerID=40&md5=68713680b2f7836462c92582204760cbhttps://remedy.med.bg.ac.rs/handle/123456789/2757The aim of our study was to examine the position of vaccinated people regarding the proposal for mandatory and seasonal vaccination against COVID-19 in Serbia. A cross-sectional study was conducted in a sample of people who came to receive a third dose of COVID-19 at the Institute of Public Health of Serbia in September and October 2021. Data were collected by means of a sociodemographic questionnaire. The study sample comprised 366 vaccinated adults. Factors associated with the belief that vaccination against COVID-19 should become mandatory were being married, being informed about COVID-19 from TV programmes and medical journals, trust in health professionals, and having friends affected by COVID-19. In addition to these predictors, factors associated with the belief that COVID-19 vaccination should become seasonal were being older, consistently wearing facemasks, and not being employed. The results of this study highlight that trust in information delivery, evidence-based data, and healthcare providers may be a major driver of mandatory and seasonal vaccine uptake. A careful assessment of the epidemiological situation, the capacity of the health system, and the risk-benefit ratio is needed in order to introduce seasonal and/or mandatory vaccination against COVID-19. © The Author(s), 2023. Published by Cambridge University Press.COVID-19mandatory vaccinationseasonal vaccinationthird vaccine dose