Modeling COVID-19 infection risks for a single hand-to-fomite scenario and potential risk reductions offered by surface disinfection - 25/05/21
, Mark H. Weir, PhD d, Sally F. Bloomfield, BPharm, PhD e, Elizabeth A. Scott, PhD f, Kelly A. Reynolds, PhD, MSPH a
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Highlights |
• | We used quantitative microbial risk assessment to relate surface disinfection efficacy to COVID-19 infection risk. |
• | Little log10 reductions may be needed for low viral bioburden conditions. |
• | >2 log10 may be needed to achieve risks <1:1,000,000 for high viral bioburden. |
Résumé |
We used a quantitative microbial risk assessment approach to relate log10 disinfection reductions of SARS-CoV-2 bioburden to COVID-19 infection risks. Under low viral bioburden, minimal log10 reductions may be needed to reduce infection risks for a single hand-to-fomite touch to levels lower than 1:1,000,000, as a risk comparison point. For higher viral bioburden conditions, log10 reductions of more than 2 may be needed to achieve median infection risks of less than 1:1,000,000.
Le texte complet de cet article est disponible en PDF.Key Words : SARS-CoV-2, Fomite, QMRA, Disinfection
Plan
| A.M. Wilson was supported by the University of Arizona Foundation and the Hispanic Women's Corporation/Zuckerman Family Foundation Student Scholarship Award through the Mel and Enid Zuckerman College of Public Health, University of Arizona. Code is available under a Creative Commons License at: QMRA_bleach |
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| Conflicts of interest: A.M. Wilson reports grants from Allied BioScience, Inc.; ZoonoUSA; Gojo Industries, Inc.; and Ecolab outside the submitted work. M.H. Weir reports no conflicts of interest. SF Bloomfield reports no conflicts of interest. E.A. Scott reports no conflicts of interest. K.A. Reynolds reports grants from GOJO Industries, Inc. and Ecolab outside the submitted work. |
Vol 49 - N° 6
P. 846-848 - juin 2021 Retour au numéro
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