Modeling COVID-19 infection risks for a single hand-to-fomite scenario and potential risk reductions offered by surface disinfection

Amanda M. Wilson, Mark H. Weir, Sally F. Bloomfield, Elizabeth A. Scott, Kelly A. Reynolds

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)846-848
Number of pages3
JournalAmerican Journal of Infection Control
Volume49
Issue number6
DOIs
StatePublished - Jun 2021

Keywords

  • Disinfection
  • Fomite
  • QMRA
  • SARS-CoV-2

ASJC Scopus subject areas

  • Infectious Diseases
  • Public Health, Environmental and Occupational Health
  • Epidemiology
  • Health Policy

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