COVID-19 [electronic resource] : Effects of Environmental Conditions on the Propagation of Respiratory Droplets

• Ngôn ngữ: eng
• Ký hiệu phân loại: 613.2 Dietetics
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: p. 7744-7750 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 259810
• Chủ đề: 1. 60 applied life sciences; 2. Aerosol; 3. Aerosols; 4. Atmospheric chemistry; 5. Covid-19 respiratory droplets; 6. Environment; 7. Humidity; 8. Infectious diseases; 9. Liquids; 10. Weather

Tóm tắt

As coronavirus disease 2019 (COVID-19) continues to spread, a detailed understanding on the transmission mechanisms is of paramount importance. The disease transmits mainly through respiratory droplets and aerosol. Although models for the evaporation and trajectory of respiratory droplets have been developed, how the environment impacts the transmission of COVID-19 is still unclear. In this study, we investigate the propagation of respiratory droplets and aerosol particles generated by speech under a wide range of temperatures (0?40 �C) and relative humidity (0?92%) conditions. We show that droplets can travel three times farther in low-temperature and high-humidity environment, whereas the number of aerosol particles increases in high-temperature and low-humidity environments. The results also underscore the importance of proper ventilation, as droplets and aerosol spread significantly farther in airstreams. This study contributes to the understanding of the environmental impact on COVID-19 transmission.