{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T05:13:29Z","timestamp":1790745209052,"version":"4.1.0"},"reference-count":42,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2021,10,19]],"date-time":"2021-10-19T00:00:00Z","timestamp":1634601600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006388","name":"h\u00f4pitaux universitaires de gen\u00e9ve","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100006388","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100030992","name":"Swiss School of Public Health","doi-asserted-by":"crossref","award":["Corona Immunitas research program"],"award-info":[{"award-number":["Corona Immunitas research program"]}],"id":[{"id":"10.13039\/100030992","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100031265","name":"Fondation de Bienfaisance du Groupe Pictet","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100031265","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Fondation Ancrage"},{"DOI":"10.13039\/501100002329","name":"bundesamt f\u00fcr gesundheit","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002329","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["R01 AI135115"],"award-info":[{"award-number":["R01 AI135115"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000865","name":"Bill and Melinda Gates Foundation","doi-asserted-by":"publisher","award":["OPP1191944"],"award-info":[{"award-number":["OPP1191944"]}],"id":[{"id":"10.13039\/100000865","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100030888","name":"Fondation Priv\u00e9e des HUG","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100030888","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Scand J Public Health"],"published-print":{"date-parts":[[2022,2]]},"abstract":"<jats:p>Aims: To assess SARS-CoV-2 seroprevalence over the first epidemic wave in the canton of Geneva, Switzerland, as well as risk factors for infection and symptoms associated with IgG seropositivity. Methods: Between April and June 2020, former participants of a representative survey of the 20\u201374-year-old population of canton Geneva were invited to participate in the study, along with household members aged over 5 years. Blood samples were tested for anti-SARS-CoV-2 immunoglobulin G. Questionnaires were self-administered. We estimated seroprevalence with a Bayesian model accounting for test performance and sampling design. Results: We included 8344 participants, with an overall adjusted seroprevalence of 7.8% (95% credible interval 6.8\u20138.9). Seroprevalence was highest among 18\u201349 year-olds (9.5%), and lowest in 5\u20139-year-old children (4.3%) and individuals &gt;65 years (4.7-5.4%). Odds of seropositivity were significantly reduced for female retirees and unemployed men compared to employed individuals, and smokers compared to non-smokers. We found no significant association between occupation, level of education, neighborhood income and the risk of being seropositive. The symptom most strongly associated with seropositivity was anosmia\/dysgeusia. Conclusions: Anti-SARS-CoV-2 population seroprevalence remained low after the first wave in Geneva. Socioeconomic factors were not associated with seropositivity in this sample. The elderly, young children and smokers were less frequently seropositive, although it is not clear how biology and behaviours shape these differences.<\/jats:p>","DOI":"10.1177\/14034948211048050","type":"journal-article","created":{"date-parts":[[2021,10,19]],"date-time":"2021-10-19T23:07:17Z","timestamp":1634684837000},"page":"124-135","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":26,"title":["Seroprevalence of anti-SARS-CoV-2 IgG antibodies, risk factors for infection and associated symptoms in Geneva, Switzerland: a population-based study"],"prefix":"10.1177","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7379-402X","authenticated-orcid":false,"given":"Aude","family":"Richard","sequence":"first","affiliation":[{"name":"Division of Primary Care, Geneva University Hospitals, Switzerland"},{"name":"Institute of Global Health, University of Geneva, 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Humanitarian Medicine, Geneva University Hospitals, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicolas","family":"Vuilleumier","sequence":"additional","affiliation":[{"name":"Division of Laboratory Medicine, Geneva University Hospitals, Switzerland"},{"name":"Department of Medicine, University of Geneva, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicola","family":"Low","sequence":"additional","affiliation":[{"name":"Institute of Social and Preventive Medicine, University of Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samia","family":"Hurst","sequence":"additional","affiliation":[{"name":"Institute for Ethics, History, and the Humanities, University of Geneva, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isabella","family":"Eckerle","sequence":"additional","affiliation":[{"name":"Geneva Center for Emerging Viral Diseases and Laboratory of Virology, 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