PMID: 11934038Apr 6, 2002Paper

Risk assessment of hand washing efficacy using literature and experimental data

International Journal of Food Microbiology
Rebecca MontvilleDonald W Schaffner

Abstract

This study simulated factors that influence the levels of bacteria on foodservice workers' hands. Relevant data were collected from the scientific literature and from laboratory experiments. Literature information collected included: initial bacterial counts on hands and water faucet spigots, bacterial population changes during hand washing as effected by soap type, sanitizing agent, drying method, and the presence of rings. Experimental data were also collected using Enterobacter aerogenes as a surrogate for transient bacteria. Both literature and experimental data were translated into appropriate discrete or probability distribution functions. The appropriate statistical distribution for each phase of the hand washing process was determined. These distributions were: initial count on hands, beta (2.82, 2.32, 7.5); washing reduction using regular soap, beta (3.01, 1.91, -3.00, 0.60); washing reduction using antimicrobial soap, beta (4.19, 2.99, -4.50, 1.50); washing reduction using chlorhexidine gluconate (CHG), triangular (-4.75, -1.00, 0); reductions from hot air drying, beta (3.52, 1.92, -0.20, 1.00); reduction from paper towel drying, triangular (-2.25, -0.75, 0); reduction due to alcohol sanitizer, gamma (-1.23, 4.42) -5....Continue Reading

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Citations

Oct 10, 2007·International Journal of Environmental Health Research·Maribel JimenezCristobal Chaidez
Nov 23, 2010·The Journal of School Health·Marilyn B Lee, Judy D Greig
Nov 19, 2013·International Journal of Environmental Research and Public Health·Rached IsmaïlMichel Fédérighi
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