{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T23:03:34Z","timestamp":1783551814920,"version":"3.55.0"},"reference-count":23,"publisher":"Korean Society for Preventive Medicine","issue":"5","license":[{"start":{"date-parts":[[2021,9,2]],"date-time":"2021-09-02T00:00:00Z","timestamp":1630540800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["jpmph.org"],"crossmark-restriction":true},"short-container-title":["J Prev Med Public Health"],"published-print":{"date-parts":[[2021,9,30]]},"abstract":"<jats:p>Objectives: The number of cases of hepatitis A virus (HAV) infections has sharply increased in Korea, especially among young adults. In this study, an HAV outbreak in a facility for disabled people was investigated, and we found epidemiological differences both between 2 different generations and between generally abled and disabled groups.Methods: We analyzed the incubation period and attack rate of an HAV outbreak and investigated the prevalence of HAV antibodies among the staff and residents of a facility for the disabled. We performed a retrospective cohort study during the HAV outbreak, which lasted from February 8 to 25, 2019, including examinations of HAV antibody tests and post-exposure HAV vaccination for the staff or residents of the facility.Results: There were 9 confirmed cases in 2 staff members and 7 residents. Among 53 people (30 staff and 23 residents), except for the 9 confirmed cases and 1 staff member with a known history of HAV infection, HAV seroprevalence was seen in 16.7% of the staff under 40 years of age and 95.2% of those over 40 years of age, while the corresponding rates in the residents were 0.0% and 58.8%, respectively.Conclusions: This result implies that it is necessary to prioritize HAV vaccination for vulnerable groups and workers of residential care facilities.<\/jats:p>","DOI":"10.3961\/jpmph.21.349","type":"journal-article","created":{"date-parts":[[2021,9,2]],"date-time":"2021-09-02T03:06:36Z","timestamp":1630551996000},"page":"370-375","update-policy":"https:\/\/doi.org\/10.3961\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Hepatitis A Outbreak in a Facility for the Disabled, Gyeonggi Province, Korea: An Epidemiological Investigation"],"prefix":"10.3961","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5387-3399","authenticated-orcid":true,"given":"Yeonhwa","family":"Chang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0441-4107","authenticated-orcid":true,"given":"Chanhee","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0901-3305","authenticated-orcid":true,"given":"Nayoung","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6133-8780","authenticated-orcid":true,"given":"Joon Jai","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4830-9851","authenticated-orcid":true,"given":"Heeyoung","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2350","reference":[{"key":"ref1","first-page":"3589","volume-title":"Hepatitis A virus infection and hepatitis A vaccination in human immunodeficiency virus-positive patients: a review","author":"Lin","year":"2017"},{"key":"ref2","first-page":"e15139","volume-title":"Analysis of 5\u2019 nontranslated region of hepatitis A viral RNA genotype I from South Korea: comparison with disease severities","author":"Kanda","year":"2010"},{"key":"ref3","first-page":"e0245162","volume-title":"Nationwide seroprevalence of hepatitis A in South Korea from 2009 to 2019","author":"Lee","year":"2021"},{"key":"ref4","first-page":"S164","volume-title":"Hepatitis A virus: from discovery to vaccines","author":"Martin","year":"2006"},{"key":"ref5","first-page":"151","volume-title":"Genetic variability and molecular evolution of hepatitis A virus","author":"Cristina","year":"2007"},{"key":"ref6","first-page":"53","volume-title":"Genetic characterization of wild-type genotype VII hepatitis A virus","author":"Ching","year":"2002"},{"key":"ref7","first-page":"280","volume-title":"An outbreak of foodborne hepatitis A showing a relationship between dose and incubation period","author":"Istre","year":"1985"},{"key":"ref8","first-page":"a031708","volume-title":"Natural history, clinical manifestations, and pathogenesis of hepatitis A","author":"Shin","year":"2018"},{"key":"ref9","first-page":"3","volume-title":"","author":"Chakravarti","year":"2020"},{"key":"ref10","first-page":"163","volume-title":"Viral hepatitis in South Korea","author":"Pak","year":"2017"},{"key":"ref11","first-page":"e230","volume-title":"Perspectives on acute hepatitis A control in Korea","author":"Kang","year":"2019"},{"key":"ref12","first-page":"159","volume-title":"Epidemiological and clinical history of viral hepatitis in Korea","author":"Yoon","year":"2021"},{"key":"ref13","first-page":"73","volume-title":"Trends in recent waterborne and foodborne disease outbreaks in South Korea, 2015-2019","author":"Lee","year":"2021"},{"key":"ref14","first-page":"67","volume-title":"Hepatitis A in Korea from 2011 to 2013: current epidemiologic status and regional distribution","author":"Moon","year":"2016"},{"key":"ref15","first-page":"34","volume-title":"The changing epidemiology of hepatitis A in children and the consideration of active immunization in Korea","author":"Sohn","year":"2000"},{"key":"ref16","first-page":"256","volume-title":"The etiology of acute viral hepatitis for the last 3 years","author":"Song","year":"2005"},{"key":"ref17","first-page":"e0186257","volume-title":"Seroprevalence and disease burden of acute hepatitis A in adult population in South Korea","author":"Yoon","year":"2017"},{"key":"ref18","first-page":"e2014011","volume-title":"The costs of hepatitis A infections in South Korea","author":"Kim","year":"2014"},{"key":"ref19","first-page":"e2019038","volume-title":"Causes and countermeasures for repeated outbreaks of hepatitis A among adults in Korea","author":"Ki","year":"2019"},{"key":"ref20","first-page":"227","volume-title":"Recent seroprevalence of antihepatitis A IgG in the Korean population: a large, populationbased study","author":"Choi","year":"2020"},{"key":"ref21","first-page":"e0170432","volume-title":"Nationwide seropositivity of hepatitis A in Republic of Korea from 2005 to 2014, before and after the outbreak peak in 2009","author":"Kim","year":"2017"},{"key":"ref22","first-page":"1845","volume-title":"COVID-19 and vulnerable population with communication disorders","author":"Sher","year":"2020"},{"key":"ref23","first-page":"62","volume-title":"Epidemiological investigation of an outbreak of hepatitis A at a residential facility for the disabled, 2011","author":"Lim","year":"2013"}],"container-title":["Journal of Preventive Medicine and Public 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