Clinical Research Directory

Inclusion Criteria: \- For caregivers of children * Children aged ≥2 months and ≤59 months * Caregivers informed consent obtained For vaccination staff * All vaccination staff currently working at the selected community health service centers or township health clinics on the day of the survey For retrospective analysis * Children aged 5 years and under; with complete vaccination records. Complete vaccination records refer to a child having received all vaccines required by the NIP for their age group, with accurate dates recorded for each vaccination dose. Exclusion Criteria: \- For caregivers of children * Caregivers who are unable to participate in the survey due to physical or other objective reasons * Caregivers with communication barriers * Caregivers who do not consent to participate in the survey For vaccination staff * Vaccination staff who do not consent to participate in the survey For retrospective analysis * Children whose vaccination records are missing or incomplete * Children whose vaccination has been delayed or not received due to medical contraindications.