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July 27, 2020
Michael Riediker1; Dai-Hua Tsai1,2
JAMA Netw Open. 2020;3(7):e2013807. doi:10.1001/jamanetworkopen.2020.13807
Key Points Espa?ol 中文 (Chinese)
Question What is the estimated viral load released from an individual with coronavirus disease 2019 (COVID-19) by breathing and coughing, and what is the resulting concentration in a room?
Findings In this mathematical modeling study, breathing and coughing by a simulated individual with COVID-19 were estimated to release large numbers of viruses in a poorly ventilated room with a coughing person. However, the estimated infectious risk posed by a person with typical viral load who breathes normally was low, and only few people with very high viral load posed an infection risk in a poorly ventilated closed environment.
Meaning These results may partially explain the observed rates of transmission and suggest that there is a need for strict respiratory protection when people are in the same room with an individual with COVID-19.
Michael Riediker1; Dai-Hua Tsai1,2
JAMA Netw Open. 2020;3(7):e2013807. doi:10.1001/jamanetworkopen.2020.13807
Key Points Espa?ol 中文 (Chinese)
Question What is the estimated viral load released from an individual with coronavirus disease 2019 (COVID-19) by breathing and coughing, and what is the resulting concentration in a room?
Findings In this mathematical modeling study, breathing and coughing by a simulated individual with COVID-19 were estimated to release large numbers of viruses in a poorly ventilated room with a coughing person. However, the estimated infectious risk posed by a person with typical viral load who breathes normally was low, and only few people with very high viral load posed an infection risk in a poorly ventilated closed environment.
Meaning These results may partially explain the observed rates of transmission and suggest that there is a need for strict respiratory protection when people are in the same room with an individual with COVID-19.
