{"id":9359,"date":"2021-04-22T15:40:31","date_gmt":"2021-04-22T22:40:31","guid":{"rendered":"https:\/\/depts.washington.edu\/pandemicalliance\/?p=9359"},"modified":"2021-04-23T15:41:07","modified_gmt":"2021-04-23T22:41:07","slug":"effectiveness-of-the-bnt162b2-vaccine-in-preventing-covid-19-in-the-working-age-population-first-results-from-a-cohort-study-in-southern-sweden","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/pandemicalliance\/2021\/04\/22\/effectiveness-of-the-bnt162b2-vaccine-in-preventing-covid-19-in-the-working-age-population-first-results-from-a-cohort-study-in-southern-sweden\/","title":{"rendered":"Effectiveness of the BNT162b2 Vaccine in Preventing COVID-19 in the Working Age Population &#8211; First Results from a Cohort Study in Southern Sweden"},"content":{"rendered":"<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">[Pre-print, not peer-reviewed]<\/span><\/i><span style=\"font-weight: 400\"> The Pfizer-BioNTech vaccine was 86% effective in preventing infection &gt;7 days after the second dose in a cohort study (n=806,000) in Sweden from December 2020 to February 2021. Effectiveness was only 42% &gt;14 days after a single dose. The vaccinated population largely consisted of healthcare workers. SARS-CoV-2 incidence among unvaccinated individuals with a prior positive PCR test was considerably lower than among those without a prior positive test (28 vs. 294 cases per 100,000 person-weeks), suggesting that prior SARS-CoV-2 infection is 91% effective in preventing subsequent infection.<\/span><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">Bjork et al.\u00a0(Apr 21, 2021). Effectiveness of the BNT162b2 Vaccine in Preventing COVID-19 in the Working Age Population &#8211; First Results from a Cohort Study in Southern Sweden. Pre-print downloaded Apr 22 from <\/span><\/i><a href=\"https:\/\/www.medrxiv.org\/content\/10.1101\/2021.04.20.21254636v1\"><span style=\"font-weight: 400\">https:\/\/www.medrxiv.org\/content\/10.1101\/2021.04.20.21254636v1<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>[Pre-print, not peer-reviewed] The Pfizer-BioNTech vaccine was 86% effective in preventing infection &gt;7 days after the second dose in a cohort study (n=806,000) in Sweden from December 2020 to February 2021. Effectiveness was only 42% &gt;14 days after a single dose. The vaccinated population largely consisted of healthcare workers. SARS-CoV-2 incidence among unvaccinated individuals with&#8230;<\/p>\n<div><a class=\"more\" href=\"https:\/\/depts.washington.edu\/pandemicalliance\/2021\/04\/22\/effectiveness-of-the-bnt162b2-vaccine-in-preventing-covid-19-in-the-working-age-population-first-results-from-a-cohort-study-in-southern-sweden\/\">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":[33],"topic":[31],"class_list":["post-9359","post","type-post","status-publish","format-standard","hentry","category-article-summary","tag-vaccines","topic-vaccines-and-immunity"],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/9359","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=9359"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/9359\/revisions"}],"predecessor-version":[{"id":9360,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/9359\/revisions\/9360"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/media?parent=9359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/categories?post=9359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/tags?post=9359"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/topic?post=9359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}