{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:18:19Z","timestamp":1772252299976,"version":"3.50.1"},"reference-count":19,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,10,20]],"date-time":"2022-10-20T00:00:00Z","timestamp":1666224000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/04750\/2020 DFA\/BD\/8562\/2020"],"award-info":[{"award-number":["UIDB\/04750\/2020 DFA\/BD\/8562\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["ssph-journal.org"],"crossmark-restriction":true},"short-container-title":["Int J Public Health"],"abstract":"<jats:p>\n                    <jats:bold>Objective:<\/jats:bold>\n                    We aimed to quantify SARS-CoV-2 specific antibodies\u2019 seroprevalence among university students in Porto.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Methods:<\/jats:bold>\n                    A rapid point of care testing for SARS-CoV-2 specific immunoglobulin (Ig) M and IgG antibodies was performed, and a questionnaire was applied to 6512 voluntary students from September to December 2020. We computed the apparent IgM, IgG, and IgM or IgG prevalence, and the true prevalence and 95% credible intervals (95% CI) using Bayesian inference.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Results:<\/jats:bold>\n                    We found an apparent prevalence (IgM or IgG) of 9.7%, the true prevalence being 7.9% (95% CI 4.9\u201311.1). Prevalence was significantly higher among males (10.9% vs. 9.2%), international students (18.1% vs. 10.4% local vs. 8.8% nationally displaced), and increased with age. Those with a known risk contact, that experienced quarantine, had symptoms, or a previous negative molecular test had a higher seroprevalence. Of the 91 (1.4%) students who reported a molecular diagnosis, 86.8% were reactive for IgM or IgG.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Conclusion:<\/jats:bold>\n                    Based on immunological evidence infection was 5.6-fold the reported molecular diagnosis. The higher seroprevalence among male, older, and international students emphasizes the importance of identifying particular groups.\n                  <\/jats:p>","DOI":"10.3389\/ijph.2022.1604548","type":"journal-article","created":{"date-parts":[[2022,10,20]],"date-time":"2022-10-20T00:11:49Z","timestamp":1666224709000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["The SARS-CoV-2 Infection Among Students in the University of Porto: A Cross-Sectional Study"],"prefix":"10.3389","volume":"67","author":[{"given":"Paula","family":"Meireles","sequence":"first","affiliation":[]},{"given":"Joana Pinto","family":"Costa","sequence":"additional","affiliation":[]},{"given":"Maria Jo\u00e3o","family":"Novais","sequence":"additional","affiliation":[]},{"given":"Daniela","family":"Miranda","sequence":"additional","affiliation":[]},{"given":"Mariana Mendes","family":"Lopes","sequence":"additional","affiliation":[]},{"given":"Milton","family":"Severo","sequence":"additional","affiliation":[]},{"given":"Henrique","family":"Barros","sequence":"additional","affiliation":[]}],"member":"1965","published-online":{"date-parts":[[2022,10,20]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"108588","DOI":"10.1016\/j.clim.2020.108588","article-title":"SARS-CoV-2 Infections in Children and Young People","volume":"220","author":"Felsenstein","year":"2020","journal-title":"Clin Immunol"},{"key":"B2","doi-asserted-by":"publisher","first-page":"362","DOI":"10.7326\/M20-3012","article-title":"Prevalence of Asymptomatic SARS-CoV-2 Infection : A Narrative Review","volume":"173","author":"Oran","year":"2020","journal-title":"Ann Intern Med"},{"key":"B3","doi-asserted-by":"publisher","first-page":"110","DOI":"10.1016\/j.jaci.2020.04.006","article-title":"Risk Factors for Severity and Mortality in Adult COVID-19 Inpatients in 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