title: [Hepatitis A virus seropositivity among healthcare workers at a university hospital in Korea].
abstract: BACKGROUND
  Healthcare workers (HCW) are known as a risk group of hepatitis A virus (HAV) infection and vaccination of this group against HAV has been suggested. However, the seroprevalence of HAV antibody among HCW in Korea has not been reported. We investigated the seropositivity of HAV antibody in HCW, to obtain a baseline data.
  
  
  METHODS
  We measured serum total HAV antibody using chemiluminescent immunoassay (ADVIA Centaur, Germany) in 174 HCW at one university hospital in Seoul, Korea.
  
  
  RESULTS
  Serum HAV antibody was positive in 48 (27.6%) of 174 subjects tested. The seropositivity of HAV antibody was significantly increased with increasing age: 21.1% (26/123), 55% (22/40), and 100% (11/11) in the age groups of 20's, 30's, and 40's, respectively (P<0.001). However it was not significantly different among different occupations (physicians 38%, nurses 24.6%, other workers 31.4%, P=0.376) and work places (medical ward 29.1%, pediatric ward 25.9%, emergency room 34.4%, laboratory 0%, P=0.140). The seroprevalence rate of HAV antibody in the age groups of 20's and 30's in this study was not higher than that of previous studies on non-HCW populations in Korea since 2006.
  
  
  CONCLUSIONS
  The seroprevalence of HAV antibody among HCW in the age groups of 20's and 30's in a Korean hospital was not higher than that of non-HCW populations, and the seropositivity increased with increasing age. Further studies are needed for the age-specific strategy for vaccination, considering the increased risk of exposure in HCW to HAV infection in hospital environment with the increase of symptomatic patients with HAV.
authors.affiliation: Department of Internal Medicine, Kyunghee University College of Medicine, Seoul, Korea. sonjs@korea.com
authors.forename: Jun Seong
authors.initials: JS
authors.lastname: Son
authors.forename: Mi Suk
authors.initials: MS
authors.lastname: Lee
authors.forename: So Young
authors.initials: SY
authors.lastname: Kang
authors.forename: Woo In
authors.initials: WI
authors.lastname: Lee
mesh_terms: D000328:Adult; D005260:Female; D006506:Hepatitis A / Q000175:diagnosis* / Q000453:epidemiology; D035922:Hepatitis A Antibodies / Q000097:blood*; D030041:Hepatitis A virus / Q000276:immunology*; D006785:Hospitals, University; D006801:Humans; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure; D010564:Personnel, Hospital; D056910:Republic of Korea; D016036:Seroepidemiologic Studies
chemical_list: D035922:Hepatitis A Antibodies