Author: Wilson, Amanda M.; Weir, Mark H.; Bloomfield, Sally F.; Scott, Elizabeth A.; Reynolds, Kelly A.
Title: Modeling COVID-19 infection risks for a single hand-to-fomite scenario and potential risk reductions offered by surface disinfection Cord-id: ytejb4cd Document date: 2020_11_15
ID: ytejb4cd
Snippet: We used a quantitative microbial risk assessment (QMRA) approach to relate log(10) disinfection reductions of SARS-CoV-2 bioburden to COVID-19 infection risks. Under low viral bioburden, minimal log(10) 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, log(10) reductions of more than 2 may be needed to achieve median infection risks of less than 1:1,000,000.
Document: We used a quantitative microbial risk assessment (QMRA) approach to relate log(10) disinfection reductions of SARS-CoV-2 bioburden to COVID-19 infection risks. Under low viral bioburden, minimal log(10) 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, log(10) reductions of more than 2 may be needed to achieve median infection risks of less than 1:1,000,000.
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