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Exhaled breath is a significant source of SARS-CoV-2 emission
Jianxin Ma; Xiao Qi; Haoxuan Chen; Xinyue Li; Zheng Zhan; Haibin Wang; Lingli Sun; Lu Zhang; Jiazhen Guo; Lidia Morawska; Sergey A. Grinshpun; Pratim Biswas; Richard C. Flagan; Maosheng Yao.
Afiliação
  • Jianxin Ma; Center for Disease Control and Prevention of Chaoyang District of Beijing, Beijing, China
  • Xiao Qi; Center for Disease Control and Prevention of Chaoyang District of Beijing, Beijing, China.
  • Haoxuan Chen; College of Environmental Sciences and Engineering, Peking University, Beijing, China
  • Xinyue Li; College of Environmental Sciences and Engineering, Peking University, Beijing, China
  • Zheng Zhan; Center for Disease Control and Prevention of Chaoyang District of Beijing, Beijing, China
  • Haibin Wang; Center for Disease Control and Prevention of Chaoyang District of Beijing, Beijing, China
  • Lingli Sun; Center for Disease Control and Prevention of Chaoyang District of Beijing, Beijing, China
  • Lu Zhang; College of Environmental Sciences and Engineering, Peking University, Beijing, China
  • Jiazhen Guo; Beijing Ditan Hospital, Capital Medical University, Beijing, China
  • Lidia Morawska; Queensland University of Technology
  • Sergey A. Grinshpun; University of Cincinnati
  • Pratim Biswas; Washington University in St. Louis, St. Louis
  • Richard C. Flagan; California Institute of Technology
  • Maosheng Yao; Peking University
Preprint em Inglês | medRxiv | ID: ppmedrxiv-20115154
ABSTRACT
Despite notable efforts in airborne SARS-CoV-2 detection, no clear evidence has emerged to show how SARS-CoV-2 is emitted into the environments. Here, 35 COVID-19 subjects were recruited; exhaled breath condensate (EBC), air samples and surface swabs were collected and analyzed for SARS-CoV-2 using reverse transcription-polymerase chain reaction (RT-PCR). EBC samples had the highest positive rate (16.7%, n = 30), followed by surface swabs(5.4%, n = 242), and air samples (3.8%, n = 26). COVID-19 patients were shown to exhale SARSCoV-2 into the air at an estimated rate of 103-105 RNA copies/min; while toilet and floor surfaces represented two important SARS-CoV-2 reservoirs. Our results imply that airborne transmission of SARS-CoV-2 plays a major role in COVID-19 spread, especially during the early stages of the disease. One Sentence SummaryCOVID-19 patient exhales millions of SARS-CoV-2 particles per hour
Licença
cc_by_nc_nd
Texto completo: Disponível Coleções: Preprints Base de dados: medRxiv Idioma: Inglês Ano de publicação: 2020 Tipo de documento: Preprint
Texto completo: Disponível Coleções: Preprints Base de dados: medRxiv Idioma: Inglês Ano de publicação: 2020 Tipo de documento: Preprint
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