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Migrants from high prevalence countries are at risk of acquisition before arrival and non\u2010immune adults are potentially at risk through skin penetrating procedures and sexual contact, particularly during international travel. The risk profile of young adult students, many from high prevalence countries, is inadequately understood. A cross\u2010sectional online survey conducted among university students collected data on demographic, vaccination and travel characteristics and blood samples were tested for hepatitis B surface antibody (HBsAb) and hepatitis B core antibody (HBcAb). Analyses identified factors associated with HBsAb seroprevalence and self\u2010reported vaccination. The serosurvey was completed by 804 students born between 1988 and 1993, with 613\/804 (76.2%, 95% CI 73.2\u201379.1) self\u2010reporting prior HBV vaccination. Overall, 526\/804 (65.4%, 95% CI 62.0%\u201368.6%) students were seropositive to HBsAb, including 438\/613 (71.5%, 95% CI 67.8\u201374.9) students self\u2010reporting a prior HBV vaccine and 88\/191 (46.1%, 95% CI 39.2\u201353.2) students self\u2010reporting no prior HBV vaccine. Overall, 8\/804 (1.0%, 95% CI 0.5%\u20132.0%) students were HBcAb positive, of whom 1\/804 (0.1%, 95% CI 0.02%\u20130.7%) was currently infectious. The prevalence of chronic HBV infection was low. However, more than one in four students were susceptible to HBV and over\u2010estimated their immunity. Future vaccination efforts should focus on domestic students born before the introduction of the infant program and all international students. Screening and vaccination of students, including through campus\u2010based health services, are an opportunity to catch\u2010up young adults prior to undertaking at\u2010risk activities, including international travel.<\/jats:p>","DOI":"10.1111\/jvh.13580","type":"journal-article","created":{"date-parts":[[2021,7,26]],"date-time":"2021-07-26T15:29:10Z","timestamp":1627313350000},"page":"1400-1412","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Seroprevalence of hepatitis B antibodies among international and domestic university students"],"prefix":"10.1111","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4400-7960","authenticated-orcid":false,"given":"Anita","family":"Heywood","sequence":"first","affiliation":[{"name":"School of Population Health Faculty of Medicine and Health UNSW Sydney Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amalie","family":"Dyda","sequence":"additional","affiliation":[{"name":"University of Queensland Brisbane Queensland Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Hu","sequence":"additional","affiliation":[{"name":"Faculty of Medicine and Health UNSW Sydney Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amit","family":"Saha","sequence":"additional","affiliation":[{"name":"The Kirby Institute UNSW Sydney Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abela","family":"Mahimbo","sequence":"additional","affiliation":[{"name":"University of Technology Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heather","family":"Gidding","sequence":"additional","affiliation":[{"name":"The Kolling Institute Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bill","family":"Kefalas","sequence":"additional","affiliation":[{"name":"UNSW Health Service, UNSW Sydney Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Holly","family":"Seale","sequence":"additional","affiliation":[{"name":"School of Population Health Faculty of Medicine and Health UNSW Sydney Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C. 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