Interventions to reduce vaccine hesitancy in specific population subgroups: a rapid umbrella review

The primary objective is to systematically identify, synthesize, and describe interventions designed to reduce vaccine hesitancy among specific population subgroups, as prioritized in the INF-ACT Vaccine Hesitancy Survey. This rapid umbrella review is conducted following the latest Cochrane rapid review recommendations, which emphasize streamlined methods while preserving methodological quality and transparency (Garrity et al., 2024). The protocol has been developed according to the PICOs (Population, Intervention, Comparator, Outcomes, setting) framework.