Vaccine hesitancy among 0–6-year-olds’ guardians in Chongqing: a cross-sectional survey revealing how immunization program managers’ robust comprehensive capacity for adverse events following immunization (AEFI) management mitigates hesitancy

Robust district AEFI management and higher vaccination knowledge alleviate guardians' hesitancy. Targeted interventions can boost trust and coverage. These findings provide actionable insights for refining immunization policies and practice in China and other countries facing similar challenges.