High SARS-CoV-2 Attack Rate Following Exposure at a Choir Practice - Skagit County, Washington, March 2020.
Identifieur interne : 000002 ( Main/Curation ); précédent : 000001; suivant : 000003High SARS-CoV-2 Attack Rate Following Exposure at a Choir Practice - Skagit County, Washington, March 2020.
Auteurs : Lea Hamner [États-Unis] ; Polly Dubbel [États-Unis] ; Ian Capron [États-Unis] ; Andy Ross [États-Unis] ; Amber Jordan [États-Unis] ; Jaxon Lee [États-Unis] ; Joanne Lynn [États-Unis] ; Amelia Ball [États-Unis] ; Simranjit Narwal [États-Unis] ; Sam Russell [États-Unis] ; Dale Patrick [États-Unis] ; Howard Leibrand [États-Unis]Source :
- MMWR. Morbidity and mortality weekly report [ 1545-861X ] ; 2020.
Descripteurs français
- KwdFr :
- Adulte, Adulte d'âge moyen, Chant, Facteurs de risque, Femelle, Flambées de maladies, Humains, Infections à coronavirus (), Infections à coronavirus (mortalité), Infections à coronavirus (transmission), Infections à coronavirus (épidémiologie), Mâle, Pandémies, Pneumopathie virale (), Pneumopathie virale (mortalité), Pneumopathie virale (transmission), Pneumopathie virale (épidémiologie), Sujet âgé, Sujet âgé de 80 ans ou plus, Washington (épidémiologie).
- MESH :
- mortalité : Infections à coronavirus, Pneumopathie virale.
- épidémiologie : Infections à coronavirus, Pneumopathie virale, Washington.
- Adulte, Adulte d'âge moyen, Chant, Facteurs de risque, Femelle, Flambées de maladies, Humains, Infections à coronavirus, Mâle, Pandémies, Pneumopathie virale, Sujet âgé, Sujet âgé de 80 ans ou plus.
English descriptors
- KwdEn :
- Adult, Aged, Aged, 80 and over, Betacoronavirus (isolation & purification), Coronavirus Infections (epidemiology), Coronavirus Infections (mortality), Coronavirus Infections (therapy), Coronavirus Infections (transmission), Disease Outbreaks, Female, Humans, Male, Middle Aged, Pandemics, Pneumonia, Viral (epidemiology), Pneumonia, Viral (mortality), Pneumonia, Viral (therapy), Pneumonia, Viral (transmission), Risk Factors, Singing, Washington (epidemiology).
- MESH :
- geographic , epidemiology : Washington.
- epidemiology : Coronavirus Infections, Pneumonia, Viral.
- isolation & purification : Betacoronavirus.
- mortality : Coronavirus Infections, Pneumonia, Viral.
- therapy : Coronavirus Infections, Pneumonia, Viral.
- transmission : Coronavirus Infections, Pneumonia, Viral.
- Adult, Aged, Aged, 80 and over, Disease Outbreaks, Female, Humans, Male, Middle Aged, Pandemics, Risk Factors, Singing.
Abstract
On March 17, 2020, a member of a Skagit County, Washington, choir informed Skagit County Public Health (SCPH) that several members of the 122-member choir had become ill. Three persons, two from Skagit County and one from another area, had test results positive for SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19). Another 25 persons had compatible symptoms. SCPH obtained the choir's member list and began an investigation on March 18. Among 61 persons who attended a March 10 choir practice at which one person was known to be symptomatic, 53 cases were identified, including 33 confirmed and 20 probable cases (secondary attack rates of 53.3% among confirmed cases and 86.7% among all cases). Three of the 53 persons who became ill were hospitalized (5.7%), and two died (3.7%). The 2.5-hour singing practice provided several opportunities for droplet and fomite transmission, including members sitting close to one another, sharing snacks, and stacking chairs at the end of the practice. The act of singing, itself, might have contributed to transmission through emission of aerosols, which is affected by loudness of vocalization (1). Certain persons, known as superemitters, who release more aerosol particles during speech than do their peers, might have contributed to this and previously reported COVID-19 superspreading events (2-5). These data demonstrate the high transmissibility of SARS-CoV-2 and the possibility of superemitters contributing to broad transmission in certain unique activities and circumstances. It is recommended that persons avoid face-to-face contact with others, not gather in groups, avoid crowded places, maintain physical distancing of at least 6 feet to reduce transmission, and wear cloth face coverings in public settings where other social distancing measures are difficult to maintain.
DOI: 10.15585/mmwr.mm6919e6
PubMed: 32407303
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<front><div type="abstract" xml:lang="en">On March 17, 2020, a member of a Skagit County, Washington, choir informed Skagit County Public Health (SCPH) that several members of the 122-member choir had become ill. Three persons, two from Skagit County and one from another area, had test results positive for SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19). Another 25 persons had compatible symptoms. SCPH obtained the choir's member list and began an investigation on March 18. Among 61 persons who attended a March 10 choir practice at which one person was known to be symptomatic, 53 cases were identified, including 33 confirmed and 20 probable cases (secondary attack rates of 53.3% among confirmed cases and 86.7% among all cases). Three of the 53 persons who became ill were hospitalized (5.7%), and two died (3.7%). The 2.5-hour singing practice provided several opportunities for droplet and fomite transmission, including members sitting close to one another, sharing snacks, and stacking chairs at the end of the practice. The act of singing, itself, might have contributed to transmission through emission of aerosols, which is affected by loudness of vocalization (1). Certain persons, known as superemitters, who release more aerosol particles during speech than do their peers, might have contributed to this and previously reported COVID-19 superspreading events (2-5). These data demonstrate the high transmissibility of SARS-CoV-2 and the possibility of superemitters contributing to broad transmission in certain unique activities and circumstances. It is recommended that persons avoid face-to-face contact with others, not gather in groups, avoid crowded places, maintain physical distancing of at least 6 feet to reduce transmission, and wear cloth face coverings in public settings where other social distancing measures are difficult to maintain.</div>
</front>
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<Title>MMWR. Morbidity and mortality weekly report</Title>
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<Abstract><AbstractText>On March 17, 2020, a member of a Skagit County, Washington, choir informed Skagit County Public Health (SCPH) that several members of the 122-member choir had become ill. Three persons, two from Skagit County and one from another area, had test results positive for SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19). Another 25 persons had compatible symptoms. SCPH obtained the choir's member list and began an investigation on March 18. Among 61 persons who attended a March 10 choir practice at which one person was known to be symptomatic, 53 cases were identified, including 33 confirmed and 20 probable cases (secondary attack rates of 53.3% among confirmed cases and 86.7% among all cases). Three of the 53 persons who became ill were hospitalized (5.7%), and two died (3.7%). The 2.5-hour singing practice provided several opportunities for droplet and fomite transmission, including members sitting close to one another, sharing snacks, and stacking chairs at the end of the practice. The act of singing, itself, might have contributed to transmission through emission of aerosols, which is affected by loudness of vocalization (1). Certain persons, known as superemitters, who release more aerosol particles during speech than do their peers, might have contributed to this and previously reported COVID-19 superspreading events (2-5). These data demonstrate the high transmissibility of SARS-CoV-2 and the possibility of superemitters contributing to broad transmission in certain unique activities and circumstances. It is recommended that persons avoid face-to-face contact with others, not gather in groups, avoid crowded places, maintain physical distancing of at least 6 feet to reduce transmission, and wear cloth face coverings in public settings where other social distancing measures are difficult to maintain.</AbstractText>
</Abstract>
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<Author ValidYN="Y"><LastName>Dubbel</LastName>
<ForeName>Polly</ForeName>
<Initials>P</Initials>
<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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</Author>
<Author ValidYN="Y"><LastName>Capron</LastName>
<ForeName>Ian</ForeName>
<Initials>I</Initials>
<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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</Author>
<Author ValidYN="Y"><LastName>Ross</LastName>
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<Initials>A</Initials>
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<Initials>A</Initials>
<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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<Author ValidYN="Y"><LastName>Ball</LastName>
<ForeName>Amelia</ForeName>
<Initials>A</Initials>
<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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</Author>
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<ForeName>Simranjit</ForeName>
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<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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<Initials>S</Initials>
<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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</Author>
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<ForeName>Dale</ForeName>
<Initials>D</Initials>
<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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</Author>
<Author ValidYN="Y"><LastName>Leibrand</LastName>
<ForeName>Howard</ForeName>
<Initials>H</Initials>
<AffiliationInfo><Affiliation>Skagit County Public Health, Mount Vernon, Washington.</Affiliation>
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<Language>eng</Language>
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<ArticleDate DateType="Electronic"><Year>2020</Year>
<Month>05</Month>
<Day>15</Day>
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<MedlineJournalInfo><Country>United States</Country>
<MedlineTA>MMWR Morb Mortal Wkly Rep</MedlineTA>
<NlmUniqueID>7802429</NlmUniqueID>
<ISSNLinking>0149-2195</ISSNLinking>
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<SupplMeshName Type="Organism" UI="C000656484">severe acute respiratory syndrome coronavirus 2</SupplMeshName>
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<CitationSubset>IM</CitationSubset>
<CommentsCorrectionsList><CommentsCorrections RefType="CommentIn"><RefSource>Thorax. 2020 Aug;75(8):621-622</RefSource>
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<MeshHeading><DescriptorName UI="D018352" MajorTopicYN="N">Coronavirus Infections</DescriptorName>
<QualifierName UI="Q000453" MajorTopicYN="Y">epidemiology</QualifierName>
<QualifierName UI="Q000401" MajorTopicYN="N">mortality</QualifierName>
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<MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName>
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<MeshHeading><DescriptorName UI="D008875" MajorTopicYN="N">Middle Aged</DescriptorName>
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<MeshHeading><DescriptorName UI="D058873" MajorTopicYN="N">Pandemics</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D011024" MajorTopicYN="N">Pneumonia, Viral</DescriptorName>
<QualifierName UI="Q000453" MajorTopicYN="Y">epidemiology</QualifierName>
<QualifierName UI="Q000401" MajorTopicYN="N">mortality</QualifierName>
<QualifierName UI="Q000628" MajorTopicYN="N">therapy</QualifierName>
<QualifierName UI="Q000635" MajorTopicYN="Y">transmission</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D012307" MajorTopicYN="N">Risk Factors</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D063346" MajorTopicYN="Y">Singing</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D014861" MajorTopicYN="N" Type="Geographic">Washington</DescriptorName>
<QualifierName UI="Q000453" MajorTopicYN="N">epidemiology</QualifierName>
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<CoiStatement>All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. All authors report receipt of funding through Public Health Emergency Preparedness grant from the Washington State Department of Health during the conduct of the study. No other potential conflicts of interest were disclosed.</CoiStatement>
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<PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2020</Year>
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<Day>15</Day>
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<PublicationStatus>epublish</PublicationStatus>
<ArticleIdList><ArticleId IdType="pubmed">32407303</ArticleId>
<ArticleId IdType="doi">10.15585/mmwr.mm6919e6</ArticleId>
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