PropertyValue
?:abstract
  • Our research aimed to review the potential risk of infection by SARS-CoV-2. We used an excerpt of a data set generated in May 2020 for reviewing the SARS-CoV-2 prevention concept of orchestras, singers and actors. People were sampled for droplet release for one-hour activities using a Grimm spectrometer covering a spectrum of 1 to 32 µm diameter. We estimated the number of “quanta” in the exhaled liquid from viral concentrations of 10(6) to 10(11)/mL, based on the Human Infective Dose 50 of 218 viral particles. We employed the Wells–Riley equation to estimate the risk of infection in typical meeting rooms for a one-hour meeting of 2, 4 and 6 people observing a 2 m distance. The four participating adults released a mean of 1.28 nLm(3) while breathing, 1.68 nL/m(3) while speaking normally, and two adults released a mean of 4.44 nL/m(3) while talking with a raised voice. The combination of 50% breathing, 45% talking normally and 5% speaking with a raised voice increased the risk of infection above 5% for a one-hour meeting of two people. The result is based on 6 quanta released, corresponding to an initial virus concentration of 1000/nL (10(9)/mL) in the fluid of the upper respiratory tract. Our data confirm the importance of using facemasks in combination with other measures to prevent transmission of SARS-CoV-2 at the workplace.
is ?:annotates of
?:creator
?:doi
?:doi
  • 10.3390/ijerph17239088
?:journal
  • Int_J_Environ_Res_Public_Health
?:license
  • cc-by
?:pdf_json_files
  • document_parses/pdf_json/6729344379d8f990ac2a7cc6105d35c81a04a15e.json
?:pmc_json_files
  • document_parses/pmc_json/PMC7730990.xml.json
?:pmcid
?:pmid
?:pmid
  • 33291404.0
?:publication_isRelatedTo_Disease
?:sha_id
?:source
  • Medline; PMC
?:title
  • Aerosol Release by Healthy People during Speaking: Possible Contribution to the Transmission of SARS-CoV-2
?:type
?:year
  • 2020-12-05

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