{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T21:15:44Z","timestamp":1780953344802,"version":"3.54.1"},"reference-count":28,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2020,2,5]],"date-time":"2020-02-05T00:00:00Z","timestamp":1580860800000},"content-version":"unspecified","delay-in-days":35,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Epidemiol. Infect."],"published-print":{"date-parts":[[2020]]},"abstract":"<jats:title>Abstract<\/jats:title>\n\t  <jats:p>Q fever (caused by <jats:italic>Coxiella burnetii<\/jats:italic>) is thought to have an almost world-wide distribution, but few countries have conducted national serosurveys. We measured Q fever seroprevalence using residual sera from diagnostic laboratories across Australia. Individuals aged 1\u201379 years in 2012\u20132013 were sampled to be proportional to the population distribution by region, distance from metropolitan areas and gender. A 1\/50 serum dilution was tested for the Phase II IgG antibody against <jats:italic>C. burnetii<\/jats:italic> by indirect immunofluorescence. We calculated crude seroprevalence estimates by age group and gender, as well as age standardised national and metropolitan\/non-metropolitan seroprevalence estimates. Of 2785 sera, 99 tested positive. Age standardised seroprevalence was 5.6% (95% confidence interval (CI 4.5%\u20136.8%), and similar in metropolitan (5.5%; 95% CI 4.1%\u20136.9%) and non-metropolitan regions (6.0%; 95%CI 4.0%\u20138.0%). More males were seropositive (6.9%; 95% CI 5.2%\u20138.6%) than females (4.2%; 95% CI 2.9%\u20135.5%) with peak seroprevalence at 50\u201359 years (9.2%; 95% CI 5.2%\u201313.3%). Q fever seroprevalence for Australia was higher than expected (especially in metropolitan regions) and higher than estimates from the Netherlands (2.4%; pre-outbreak) and US (3.1%), but lower than for Northern Ireland (12.8%). Robust country-specific seroprevalence estimates, with detailed exposure data, are required to better understand who is at risk and the need for preventive measures.<\/jats:p>","DOI":"10.1017\/s0950268820000084","type":"journal-article","created":{"date-parts":[[2020,2,4]],"date-time":"2020-02-04T22:22:52Z","timestamp":1580854972000},"source":"Crossref","is-referenced-by-count":34,"title":["Q fever seroprevalence in Australia suggests one in twenty people have been exposed"],"prefix":"10.1017","volume":"148","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7595-9281","authenticated-orcid":false,"given":"H. F.","family":"Gidding","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C. 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