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PUBMED FOR HANDHELDS

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  • Title: Two in-vivo protocols for testing virucidal efficacy of handwashing and hand disinfection.
    Author: Steinmann J, Nehrkorn R, Meyer A, Becker K.
    Journal: Zentralbl Hyg Umweltmed; 1995 Jan; 196(5):425-36. PubMed ID: 7727022.
    Abstract:
    Whole-hands and fingerpads of seven volunteers were contaminated with poliovirus type 1 Sabin strain in order to evaluate virucidal efficacy of different forms of handwashing and handrub with alcohols and alcohol-based disinfectants. In the whole-hand protocol, handwashing with unmedicated soap for 5 min and handrubbing with 80% ethanol yielded a log reduction factor (RF) of > 2, whereas the log RF by 96.8% ethanol exceeded 3.2. With the fingerpad model ethanol produced a greater log RF than iso- or n-propanol. Comparing five commercial hand disinfectants and a chlorine solution (1.0% chloramine T-solution) for handrub, Desderman and Promanum, both composed of ethanol, yielded log RFs of 2.47 and 2.26 respectively after an application time of 60 s, similar to 1.0% chloramine T-solution (log RF of 2.28). Autosept, Mucasept, and Sterillium, based on n-propanol and/or isopropanol, were found to be significantly less effective (log RFs of 1.16, 1.06 and 1.52 respectively). A comparison of a modified whole-hand and the fingerpad protocol with Promanum showed similar results with the two systems suggesting both models are suitable for testing the in-vivo efficacy of handwashing agents and hand disinfectants which are used without any water.
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