An extended model for transfer of micro-organisms via the hands: differences between organisms and the effect of alcohol disinfection.

摘要: A model for contact transfer of micro-organisms by hand has been extended to include representatives bacterial species responsible a majority hospital-acquired infections. The ability the organisms from contaminated fabrics hands and sterile was measured, as their survive on skin hands. There were differences between species. Staphylococcus saprophyticus transferred well but not fabric other species; it survived skin. Pseudomonas aeruginosa, Klebsiella aerogenes Serratia marcescens moderately overall also These results in contrast those obtained with strain Escherichia coli one Streptococcus pyogenes. used investigate use small volumes alcohol preventing via An handrub either 0.3 ml 80% ethanol or 70% isopropanol gave reductions slightly less than that soap water wash. Raising volume, consequently time, 0.5 14000-fold reduction transfer, statistically indistinguishable thorough wash (9800-fold reduction).