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Evaluation of Mumps Vaccine Effectiveness by outbreak investigation in one kindergarten in Ulsan city, 2006.
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Kyo Hyun Kim, Heran Ki, Bo Youl Choi, Chang Hui Kim, Dong Han Lee, Un Young Ko, Moran Ki
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Korean J Epidemiol. 2008;30(1):110-118. Published online June 30, 2008
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DOI: https://doi.org/10.4178/kje.2008.30.1.110
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Abstract
PURPOSE
Despite of the high MMR vaccine coverage, the mumps outbreaks is continued in most developed countries including South Korea. To evaluate the effectiveness of MMR vaccine, we carried out mumps outbreak investigation in one kindergarten.
METHODS In Dec. 2006, a mumps outbreak occurred in a kindergarten. Retrospective study was conducted among 212 respondents (205 children and 7 teachers) in 230 study populations (study participation rate: 92%). To define mumps cases, a questionnaire survey, telephone survey, and mumps antibody test with serum were conducted. MMR vaccination status was verified in 198 children using children's vaccination records, National Immunization Registration System and/or medical records of private clinics or hospitals.
RESULTS Over 90% children had received one dose of MMR vaccination. However, 2nd dose of MMR vaccination rate was 45.1%. Attack rates of mumps were 22.9%(22/96) for one dose MMR vaccinees and 3.3%(3/92) for two doses vaccinees. MMR vaccine effectiveness of two doses over one dose was 86%.
Mumps attack rate in one dose MMR vaccinees increased by the duration after MMR vaccination. Among all mumps cases, asymptomatic mumps infection identified by IgM positive or IgG over 10,000mIU/ml was 58% (26/ 45).
CONCLUSIONS MMR one dose coverage rate was high(92.1%), but the second dose vaccination rate was very low (45.1%). Mumps attack rate was increased by the duration after the MMR vaccination, and the maximum effectiveness of one dose MMR vaccination was low (77.1%). Therefore, to prevent mumps outbreaks in the kindergarten, second MMR vaccination should be scheduled in 4 years old age, and the coverage rate should be increased over 90%. Further studies for the effectiveness of MMR two doses after 5 and more years are needed.
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Summary
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Citations
Citations to this article as recorded by  - Differential Demographic and Clinical Characteristics between MMR Vaccinated and Unvaccinated Children in South Korea: A Nationwide Study
Dongwon Yoon, Juhwan Kim, Juyoung Shin
Vaccines.2021; 9(6): 653. CrossRef - Seroprevalence of mumps in healthcare workers in South Korea
Sun-Kyung Kim, Jiwon Jung, Sun Hee Kwak, Min Jee Hong, Sung-Han Kim
Clinical and Experimental Vaccine Research.2020; 9(1): 64. CrossRef - Resurgence of Mumps in Korea
Sun Hee Park
Infection & Chemotherapy.2015; 47(1): 1. CrossRef - Mumps outbreak in Incheon, Korea, 2009
Seon Young Cho, Soo Young Lee, Jin Han Kang, Hui Seung Hwang
Korean Journal of Pediatrics.2010; 53(1): 67. CrossRef - Mumps Transmission Control Status and Inapparent Infection Rate among Middle and High School Students during the 2007-2008 Mumps Outbreak in Daegu
Kyo Hyun Kim, Chang Hwi Kim, Bo Youl Choi, Un Yeong Go, Dong Han Lee, Moran Ki
Journal of Preventive Medicine and Public Health.2009; 42(6): 408. CrossRef
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