{"id":8605,"date":"2021-04-02T09:47:15","date_gmt":"2021-04-02T16:47:15","guid":{"rendered":"https:\/\/depts.washington.edu\/pandemicalliance\/?p=8605"},"modified":"2021-04-06T09:48:04","modified_gmt":"2021-04-06T16:48:04","slug":"quantitative-microbial-risk-assessment-for-airborne-transmission-of-sars-cov-2-via-breathing-speaking-singing-coughing-and-sneezing","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/pandemicalliance\/2021\/04\/02\/quantitative-microbial-risk-assessment-for-airborne-transmission-of-sars-cov-2-via-breathing-speaking-singing-coughing-and-sneezing\/","title":{"rendered":"Quantitative Microbial Risk Assessment for Airborne Transmission of SARS-CoV-2 via Breathing, Speaking, Singing, Coughing, and Sneezing"},"content":{"rendered":"<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Risk of SARS-CoV-2 transmission via aerosols beyond 1.5 meters can be low depending on the activity by which they are expelled, according to a risk assessment model using published data on expelled droplets by various activities and <\/span><i><span style=\"font-weight: 400\">in vitro<\/span><\/i><span style=\"font-weight: 400\"> estimates of an infectious dose. In a 100m<\/span><span style=\"font-weight: 400\">3<\/span><span style=\"font-weight: 400\"> room after 20 minutes of exposure from breathing, speaking, singing, coughing or sneezing by an infected person, at 10<\/span><span style=\"font-weight: 400\">7<\/span><span style=\"font-weight: 400\"> RNA copies\/mL in mucus, the mean illness risks were estimated to be below 0.1%. Risks exceeded 1% after 2 hours of exposure at 10<\/span><span style=\"font-weight: 400\">8<\/span><span style=\"font-weight: 400\"> RNA copies\/mL in mucus in the singing, coughing, and sneezing scenarios. Higher air exchanges per hour reduced risks of illness by several factors.<\/span><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">Schijven et al.\u00a0(Apr 1, 2021). Quantitative Microbial Risk Assessment for Airborne Transmission of SARS-CoV-2 via Breathing, Speaking, Singing, Coughing, and Sneezing. Environmental Health Perspectives. <\/span><\/i><a href=\"https:\/\/doi.org\/10.1289\/EHP7886\"><span style=\"font-weight: 400\">https:\/\/doi.org\/10.1289\/EHP7886<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Risk of SARS-CoV-2 transmission via aerosols beyond 1.5 meters can be low depending on the activity by which they are expelled, according to a risk assessment model using published data on expelled droplets by various activities and in vitro estimates of an infectious dose. In a 100m3 room after 20 minutes of exposure from breathing,&#8230;<\/p>\n<div><a class=\"more\" href=\"https:\/\/depts.washington.edu\/pandemicalliance\/2021\/04\/02\/quantitative-microbial-risk-assessment-for-airborne-transmission-of-sars-cov-2-via-breathing-speaking-singing-coughing-and-sneezing\/\">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":[39,38],"topic":[210],"class_list":["post-8605","post","type-post","status-publish","format-standard","hentry","category-article-summary","tag-modeling","tag-transmission","topic-transmission-in-a-wisco"],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8605","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=8605"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8605\/revisions"}],"predecessor-version":[{"id":8606,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8605\/revisions\/8606"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/media?parent=8605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/categories?post=8605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/tags?post=8605"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/topic?post=8605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}