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Birth Cohort Study on Longitudinal Impact of Internal Migration Status on Routine Vaccination Coverage in the First
Zhiqiang Cao1,2,3, Rui Yu1,2,3, Qianli Yuan1,2,3
1Beijing Key Laboratory of Surveillance, Early Warning and Pathogen Research on Emerging Infectious Diseases, Department of Expanded Programme on Immunization, Beijing Center for Disease Prevention and Control, Beijing, China.
What Is Already Known About This Topic?:
High population mobility frequently undermines public health efforts to maintain immunization coverage, as mobile families often face barriers to accessing consistent healthcare.
What Is Added By This Report?:
Migration across provincial-level administrative divisions (PLADs) drives progressively widening coverage disparities while contributing to delayed vaccination and missed catch-up opportunities within the National Immunization Program (NIP) during the first three years of life in China.
What Are The Implications For Public Health Practice?:
These findings underscore the need for a dynamic, life-course approach to migrant child immunization, with heightened focus on ensuring coverage during infancy. Vaccination verification and catch-up efforts should be intensified at preschool enrollment.
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