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The Current Status of Simultaneous Vaccination of Children Aged 0-3 Years - China, 2022-2024

Xin Liu1, Yuan Liang1, Zhaonan Zhang1

  • 1National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Center for National Immunization Program, Chinese Center for Disease Control and Prevention & Chinese Academy of Preventive Medicine, Beijing, China.

China CDC Weekly
|May 22, 2026
PubMed

Insights

Simultaneous vaccination, combining multiple vaccines in one visit, is common in China. This report details real-world vaccination patterns, informing future multi-vaccine research and improving immunization efficiency.

Area of Science:

  • Immunology
  • Public Health
  • Vaccinology

Background:

  • Simultaneous vaccination enhances coverage and reduces healthcare visits.
  • While specific vaccine combinations have been studied for safety and immunogenicity in China, comprehensive nationwide data are lacking.

Purpose of the Study:

  • To analyze real-world vaccination patterns in China.
  • To provide evidence for multi-vaccine administration research and combined vaccine development.

Main Methods:

  • Retrospective analysis of vaccination data from 2022-2024.
  • Categorization of vaccinations based on the number of vaccines administered simultaneously.

Main Results:

  • 46.27% of vaccinations involved two vaccines, 2.36% involved three, and 0.003% involved four or more.
  • Two-vaccine combinations primarily included National Immunization Program (NIP) vaccines.
  • Combinations of three or more vaccines frequently included both NIP and non-NIP vaccines.

Conclusions:

  • Real-world vaccination data reveal common multi-vaccine administration practices in China.
  • Findings support the ongoing research into efficient multi-vaccine strategies and combined vaccine development.
  • This evidence can inform public health policies to improve immunization service delivery.
Abstract

Keywords:
ChildrenCross-sectional studySimultaneous administrationVaccines

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