Vaccination Coverage, Timeliness and Adverse Events Following Immunization in Children with Medical Conditions - Shandong Province, China, 2023.

Authors

Yudan Song, Xiang Zeng, Shaonan Liu, Yan Wang, Yuanyuan Wang, Xiaoxue Liu, Junhong Li, Yamin Wang, Lijing Xu, Weiyan Zhang, Zhijie An, Zundong Yin, Chao Ma

Published in

China CDC weekly. Volume 8. Issue 24. Pages 751-757. Jun 12, 2026.

Abstract

Children with medical conditions who remain undervaccinated are at risk of vaccine-preventable diseases.
In a multicenter retrospective study of 24,966 children with medical conditions, the median coverage of 10 National Immunization Program vaccines reached 97.33%, whereas timely completion was 89.21%. Children with brain, immune, or congenital disorders exhibited significantly lower vaccination coverage than those with other medical conditions. Post-diagnosis delays exceeded those before diagnosis. Overall adverse events following immunization rate was 23.7/100,000 doses administered.
Research on the vaccination of children with brain, immune system, and congenital disorders is imperative. Integration of advanced practices will enhance the vaccination rate.

PMID:
42434696
Bibliographic data and abstract were imported from PubMed on 11 Jul 2026.

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