Affiliation:
1. National Biodefense Analysis and Countermeasures Center, Operated by Battelle National Biodefense Institute for the US Department of Homeland Security Science and Technology Directorate, Frederick, Maryland, USA
Abstract
Abstract
Aerosols represent a potential transmission route of COVID-19. This study examined effect of simulated sunlight, relative humidity, and suspension matrix on stability of SARS-CoV-2 in aerosols. Simulated sunlight and matrix significantly affected decay rate of the virus. Relative humidity alone did not affect the decay rate; however, minor interactions between relative humidity and other factors were observed. Mean decay rates (± SD) in simulated saliva, under simulated sunlight levels representative of late winter/early fall and summer were 0.121 ± 0.017 min−1 (90% loss, 19 minutes) and 0.306 ± 0.097 min−1 (90% loss, 8 minutes), respectively. Mean decay rate without simulated sunlight across all relative humidity levels was 0.008 ± 0.011 min−1 (90% loss, 286 minutes). These results suggest that the potential for aerosol transmission of SARS-CoV-2 may be dependent on environmental conditions, particularly sunlight. These data may be useful to inform mitigation strategies to minimize the potential for aerosol transmission.
Funder
Science and Technology Directorate
Battelle National Biodefense Institute
National Biodefense Analysis and Countermeasures Center
Federally Funded Research and Development Center
Publisher
Oxford University Press (OUP)
Subject
Infectious Diseases,Immunology and Allergy
Cited by
188 articles.
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