{"id":6697,"date":"2020-05-07T15:44:57","date_gmt":"2020-05-07T22:44:57","guid":{"rendered":"https:\/\/depts.washington.edu\/pandemicalliance\/?p=6697"},"modified":"2021-03-16T15:45:47","modified_gmt":"2021-03-16T22:45:47","slug":"repeated-seroprevalence-of-anti-sars-cov-2-igg-antibodies-in-a-population-based-sample-from-geneva-switzerland","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/pandemicalliance\/2020\/05\/07\/repeated-seroprevalence-of-anti-sars-cov-2-igg-antibodies-in-a-population-based-sample-from-geneva-switzerland\/","title":{"rendered":"Repeated Seroprevalence of Anti-SARS-CoV-2 IgG Antibodies in a Population-Based Sample from Geneva Switzerland"},"content":{"rendered":"<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"36\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"none\">Researchers in Switzerland\u00a0<\/span><span data-contrast=\"none\">used a\u00a0<\/span><span data-contrast=\"none\">pre-existing\u00a0<\/span><span data-contrast=\"none\">representative\u00a0<\/span><span data-contrast=\"none\">surve<\/span><span data-contrast=\"none\">y<\/span><span data-contrast=\"none\">\u00a0of the population of Geneva to estimate SARS-CoV-2 seroprevalence. Each week, 1,300 participants\u00a0<\/span><span data-contrast=\"none\">not in quarantine or isolation\u00a0<\/span><span data-contrast=\"none\">were invited\u00a0<\/span><span data-contrast=\"none\">to participate<\/span><span data-contrast=\"none\">, along with all members of the household 5 years or older.\u00a0<\/span><span data-contrast=\"none\">Over the first 3\u00a0<\/span><span data-contrast=\"none\">weeks\u00a0<\/span><span data-contrast=\"none\">of\u00a0<\/span><span data-contrast=\"none\">the\u00a0<\/span><span data-contrast=\"none\">12\u00a0<\/span><span data-contrast=\"none\">week<\/span><span data-contrast=\"none\">\u00a0<\/span><span data-contrast=\"none\">study, 1,335 participants were recruited (31% of those invited).<\/span><span data-contrast=\"none\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"36\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"none\">Seroprevalence was estimated to be 3.1% (95% CI 0.2, 5.99) in week 1, 6.1% (95% CI 2.6, 9.33) in week 2, and 9.7% in week 3 (95% CI 6.1, 13.1). They found seroprevalence to be significantly higher in\u00a0<\/span><span data-contrast=\"none\">5-19 year<\/span><span data-contrast=\"none\">\u00a0<\/span><span data-contrast=\"none\">olds<\/span><span data-contrast=\"none\">\u00a0and 20-49 year\u00a0<\/span><span data-contrast=\"none\">olds<\/span><span data-contrast=\"none\">\u00a0<\/span><span data-contrast=\"none\">compared to those\u00a0<\/span><span data-contrast=\"none\">&gt;50 year\u00a0<\/span><span data-contrast=\"none\">olds<\/span><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"36\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"none\">Despite increasing seroprevalence<\/span><span data-contrast=\"none\">, these estimates show the population is far below the seroprevalence needed for herd immunity, assuming the presence of antibodies confers at least partial protection from infection.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><i><span data-contrast=\"none\">Stringhini<\/span><\/i><i><span data-contrast=\"none\">\u00a0et al. (May 6, 2020). Repeated Seroprevalence of Anti-SARS-CoV-2 IgG Antibodies in a Population-Based Sample from Geneva Switzerland.\u00a0<\/span><\/i><i><span data-contrast=\"none\">Pre-print downloaded May 7 from<\/span><\/i><i><span data-contrast=\"none\">\u00a0<\/span><\/i><a href=\"https:\/\/doi.org\/10.1101\/2020.05.02.20088898\"><span data-contrast=\"none\">https:\/\/doi.org\/10.1101\/2020.05.02.20088898<\/span><\/a><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers in Switzerland\u00a0used a\u00a0pre-existing\u00a0representative\u00a0survey\u00a0of the population of Geneva to estimate SARS-CoV-2 seroprevalence. Each week, 1,300 participants\u00a0not in quarantine or isolation\u00a0were invited\u00a0to participate, along with all members of the household 5 years or older.\u00a0Over the first 3\u00a0weeks\u00a0of\u00a0the\u00a012\u00a0week\u00a0study, 1,335 participants were recruited (31% of those invited).\u00a0\u00a0 Seroprevalence was estimated to be 3.1% (95% CI 0.2, 5.99) in&#8230;<\/p>\n<div><a class=\"more\" href=\"https:\/\/depts.washington.edu\/pandemicalliance\/2020\/05\/07\/repeated-seroprevalence-of-anti-sars-cov-2-igg-antibodies-in-a-population-based-sample-from-geneva-switzerland\/\">Read more<\/a><\/div>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[],"topic":[16],"class_list":["post-6697","post","type-post","status-publish","format-standard","hentry","category-article-summary","topic-public-health-policy-and-practice"],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/6697","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/comments?post=6697"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/6697\/revisions"}],"predecessor-version":[{"id":6698,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/6697\/revisions\/6698"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/media?parent=6697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/categories?post=6697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/tags?post=6697"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/topic?post=6697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}