{"id":8247,"date":"2020-07-15T11:29:17","date_gmt":"2020-07-15T18:29:17","guid":{"rendered":"https:\/\/depts.washington.edu\/pandemicalliance\/?p=8247"},"modified":"2021-04-01T11:30:01","modified_gmt":"2021-04-01T18:30:01","slug":"association-between-universal-masking-in-a-health-care-system-and-sars-cov-2-positivity-among-health-care-workers","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/pandemicalliance\/2020\/07\/15\/association-between-universal-masking-in-a-health-care-system-and-sars-cov-2-positivity-among-health-care-workers\/","title":{"rendered":"Association Between Universal Masking in a Health Care System and SARS-CoV-2 Positivity Among Health Care Workers"},"content":{"rendered":"<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"44\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">A<\/span><span data-contrast=\"auto\">mong<\/span><span data-contrast=\"auto\">\u00a09,850\u00a0<\/span><span data-contrast=\"auto\">health care workers\u00a0<\/span><span data-contrast=\"auto\">Massachusetts between March 1 and April 30, 2020<\/span><span data-contrast=\"auto\">\u00a013<\/span><span data-contrast=\"auto\">%<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">were positive\u00a0<\/span><span data-contrast=\"auto\">for<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">SARS-CoV-2<\/span><span data-contrast=\"auto\">\u00a0by\u00a0<\/span><span data-contrast=\"auto\">RT-PCR<\/span><span data-contrast=\"auto\">.\u00a0<\/span><span data-contrast=\"auto\">Prior to implementation of<\/span><span data-contrast=\"auto\">\u00a0universal masking (March 1-24, 2020), the SARS-CoV-2 positivity rate increased exponentially from 0% to 21%, with<\/span><span data-contrast=\"auto\">\u00a0a<\/span><span data-contrast=\"auto\">\u00a0case doubling time of 3.6 days (95%CI 3.0-4.5 days).\u00a0<\/span><span data-contrast=\"auto\">After implementation of universal masking<\/span><span data-contrast=\"auto\">\u00a0(<\/span><span data-contrast=\"auto\">April 11-30, 2020),\u00a0<\/span><span data-contrast=\"auto\">the positivity rate decreased linearly from 14.<\/span><span data-contrast=\"auto\">7<\/span><span data-contrast=\"auto\">% to 11.<\/span><span data-contrast=\"auto\">5<\/span><span data-contrast=\"auto\">%, with a weighted mean decline of 0.49% per day.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559685&quot;:360,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><i><span data-contrast=\"none\">Wang et al. (July 14, 2020). Association Between Universal Masking in a Health Care System and SARS-CoV-2 Positivity Among Health Care Workers. JAMA.\u00a0<\/span><\/i><a href=\"https:\/\/doi.org\/10.1001\/jama.2020.12897\"><span data-contrast=\"none\">https:\/\/doi.org\/10.1001\/jama.2020.12897<\/span><\/a><span data-ccp-props=\"{&quot;134233279&quot;:true,&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>Among\u00a09,850\u00a0health care workers\u00a0Massachusetts between March 1 and April 30, 2020\u00a013%\u00a0were positive\u00a0for\u00a0SARS-CoV-2\u00a0by\u00a0RT-PCR.\u00a0Prior to implementation of\u00a0universal masking (March 1-24, 2020), the SARS-CoV-2 positivity rate increased exponentially from 0% to 21%, with\u00a0a\u00a0case doubling time of 3.6 days (95%CI 3.0-4.5 days).\u00a0After implementation of universal masking\u00a0(April 11-30, 2020),\u00a0the positivity rate decreased linearly from 14.7% to 11.5%, with a weighted mean&#8230;<\/p>\n<div><a class=\"more\" href=\"https:\/\/depts.washington.edu\/pandemicalliance\/2020\/07\/15\/association-between-universal-masking-in-a-health-care-system-and-sars-cov-2-positivity-among-health-care-workers\/\">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":[20],"class_list":["post-8247","post","type-post","status-publish","format-standard","hentry","category-article-summary","topic-clinical-characteristics-and-health-care-setting"],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8247","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=8247"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8247\/revisions"}],"predecessor-version":[{"id":8248,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8247\/revisions\/8248"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/media?parent=8247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/categories?post=8247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/tags?post=8247"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/topic?post=8247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}