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Evaluating Childhood Vaccination Coverage of NIP Vaccines: Coverage Survey versus Zhejiang Provincial Immunization Information System

Author

Listed:
  • Yu Hu

    (Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou 310000, China)

  • Yaping Chen

    (Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou 310000, China)

Abstract

Vaccination coverage in Zhejiang province, east China, is evaluated through repeated coverage surveys. The Zhejiang provincial immunization information system (ZJIIS) was established in 2004 with links to all immunization clinics. ZJIIS has become an alternative to quickly assess the vaccination coverage. To assess the current completeness and accuracy on the vaccination coverage derived from ZJIIS, we compared the estimates from ZJIIS with the estimates from the most recent provincial coverage survey in 2014, which combined interview data with verified data from ZJIIS. Of the enrolled 2772 children in the 2014 provincial survey, the proportions of children with vaccination cards and registered in ZJIIS were 94.0% and 87.4%, respectively. Coverage estimates from ZJIIS were systematically higher than the corresponding estimates obtained through the survey, with a mean difference of 4.5%. Of the vaccination doses registered in ZJIIS, 16.7% differed from the date recorded in the corresponding vaccination cards. Under-registration in ZJIIS significantly influenced the coverage estimates derived from ZJIIS. Therefore, periodic coverage surveys currently provide more complete and reliable results than the estimates based on ZJIIS alone. However, further improvement of completeness and accuracy of ZJIIS will likely allow more reliable and timely estimates in future.

Suggested Citation

  • Yu Hu & Yaping Chen, 2017. "Evaluating Childhood Vaccination Coverage of NIP Vaccines: Coverage Survey versus Zhejiang Provincial Immunization Information System," IJERPH, MDPI, vol. 14(7), pages 1-8, July.
    • Handle: RePEc:gam:jijerp:v:14:y:2017:i:7:p:758-:d:104316
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    References listed on IDEAS

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    1. Qian Li & Yu Hu & Yanpeng Zhong & Yaping Chen & Xuewen Tang & Jing Guo & Lingzhi Shen, 2014. "Using the Immunization Information System to Determine Vaccination Coverage Rates among Children Aged 1–7 Years: A Report from Zhejiang Province, China," IJERPH, MDPI, vol. 11(3), pages 1-16, March.
    2. Yu Hu & Yaping Chen & Bing Zhang & Qian Li, 2016. "An Evaluation of Voluntary Varicella Vaccination Coverage in Zhejiang Province, East China," IJERPH, MDPI, vol. 13(6), pages 1-10, June.
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    Cited by:

    1. Yu Hu & Yaping Chen & Ying Wang & Hui Liang, 2017. "Knowledge, Attitude and Practice of Pregnant Women towards Varicella and Their Children’s Varicella Vaccination: Evidence from Three Distrcits in Zhejiang Province, China," IJERPH, MDPI, vol. 14(10), pages 1-10, September.
    2. Qinbao Lu & Zheyuan Ding & Chen Wu & Haocheng Wu & Junfen Lin, 2019. "Analysis of Epidemiological Characteristics of Notifiable Diseases Reported in Children Aged 0–14 Years from 2008 to 2017 in Zhejiang Province, China," IJERPH, MDPI, vol. 16(2), pages 1-15, January.
    3. Yu Hu & Yaping Chen & Ying Wang & Hui Liang, 2018. "Hepatitis B Vaccination among 1999–2017 Birth Cohorts in Zhejiang Province: The Determinants Associated with Infant Coverage," IJERPH, MDPI, vol. 15(12), pages 1-11, December.

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