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The impact of free vaccination policies under the Korean Influenza National Immunization Program: Trends in influenza vaccination rates in South Korea from 2010 to 2019

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  • Jeongmin Seo
  • Juwon Lim

Abstract

Background: Annual vaccination for influenza is recommended for high-risk populations for its high morbidity and mortality. South Korea provides free influenza vaccination to some target groups under the National Immunization Program (NIP), and discrepantly high vaccination rates are observed in such populations. In this study, we analyzed the trends in influenza vaccination rates and evaluated the impact of the recent expansion of financial coverage to children ≤12 years and pregnant women. Methods: We conducted a cross-sectional study with nationwide survey data from Korea National Health and Nutrition Examination Survey (KNHANES). From 2010 to 2019, we evaluated the trends in influenza vaccination rates of the following four target groups: children ≤12 years, adults ≥65 years, pregnant women, and people with chronic diseases. Results: In total, 80,861 individuals were analyzed. From 2017 to 2019, the vaccination coverage of children ≤12 years increased from 66.2% to 83.1%; pregnant women from 44.1% to 68.5% (comparing the mean of 2010–2017 and 2018–2019, P

Suggested Citation

  • Jeongmin Seo & Juwon Lim, 2022. "The impact of free vaccination policies under the Korean Influenza National Immunization Program: Trends in influenza vaccination rates in South Korea from 2010 to 2019," PLOS ONE, Public Library of Science, vol. 17(1), pages 1-15, January.
    • Handle: RePEc:plo:pone00:0262594
    DOI: 10.1371/journal.pone.0262594
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    1. Hye Jung Yang & Sung-il Cho, 2014. "Influenza Vaccination Coverage among Adults in Korea: 2008–2009 to 2011–2012 Seasons," IJERPH, MDPI, vol. 11(12), pages 1-12, November.
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