Estimating contact-adjusted immunity levels against measles in South Korea and prospects for maintaining elimination status

June Young Chun, Wan Beom Park, Nam Joong Kim, Eun Hwa Choi, Sebastian Funk, Myoung don Oh

Research output: Contribution to journalArticle

Abstract

Measles has been reemerging in South Korea since December 2018 resulting in 185 cases by September 2019. We calculated contact-adjusted immunity levels against measles in South Korea using national seroprevalence data in 2014, vaccination uptake rates, and an age-specific contact matrix. We further explored options to achieve a contact-adjusted immunity level of 93% for herd immunity. The assessed contact-adjusted immunity level has increased from 86% in 2014 to 92% in 2018. Herd immunity could be achieved with immunizing 50% of susceptibles among birth cohorts 1999–2003 in 2018. Contact-adjusted immunity levels against measles have increased recently in South Korea, although they might not yet be high enough to guarantee herd immunity.

Original languageEnglish
Pages (from-to)107-111
Number of pages5
JournalVaccine
Volume38
Issue number2
DOIs
StatePublished - 10 Jan 2020

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Republic of Korea
Herd Immunity
Measles
South Korea
Immunity
immunity
Seroepidemiologic Studies
seroprevalence
Vaccination
vaccination
Parturition
herd immunity

Keywords

  • Herd immunity
  • Measles
  • Republic of Korea
  • Seroprevalence

Cite this

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abstract = "Measles has been reemerging in South Korea since December 2018 resulting in 185 cases by September 2019. We calculated contact-adjusted immunity levels against measles in South Korea using national seroprevalence data in 2014, vaccination uptake rates, and an age-specific contact matrix. We further explored options to achieve a contact-adjusted immunity level of 93{\%} for herd immunity. The assessed contact-adjusted immunity level has increased from 86{\%} in 2014 to 92{\%} in 2018. Herd immunity could be achieved with immunizing 50{\%} of susceptibles among birth cohorts 1999–2003 in 2018. Contact-adjusted immunity levels against measles have increased recently in South Korea, although they might not yet be high enough to guarantee herd immunity.",
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Estimating contact-adjusted immunity levels against measles in South Korea and prospects for maintaining elimination status. / Chun, June Young; Park, Wan Beom; Kim, Nam Joong; Choi, Eun Hwa; Funk, Sebastian; Oh, Myoung don.

In: Vaccine, Vol. 38, No. 2, 10.01.2020, p. 107-111.

Research output: Contribution to journalArticle

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AU - Park, Wan Beom

AU - Kim, Nam Joong

AU - Choi, Eun Hwa

AU - Funk, Sebastian

AU - Oh, Myoung don

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