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Related Experiment Videos

Hygienic hand disinfection.

M L Rotter

    Infection Control : IC
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Hygienic hand disinfection effectively reduces pathogens. Laboratory tests show alcohols achieve high log reductions, while disinfectant detergents are less effective and may spread bacteria.

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    Area of Science:

    • Microbiology
    • Infection Control
    • Public Health

    Background:

    • Hygienic hand disinfection is crucial for preventing pathogen transmission.
    • Assessing disinfection efficacy is vital for infection control protocols.
    • Laboratory models offer standardized methods to evaluate degerming efficacy.

    Purpose of the Study:

    • To evaluate the degerming efficacy of hand disinfection procedures.
    • To compare the effectiveness of alcohol-based disinfectants versus disinfectant detergents.
    • To establish a standardized laboratory model for assessing hand hygiene efficacy.

    Main Methods:

    • Utilized the Vienna test model with human volunteers.
    • Involved artificial contamination with *E. coli* ATCC 11229.

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  • Assessed bacterial release via the finger tip method before and after disinfection.

    • Main Results:

    • Alcohol-based disinfection (60% isopropanol) demonstrated high efficacy (log reduction > 4.0).
    • Disinfectant detergents showed lower efficacy (log reduction ≤ 3.2), similar to soap.
    • Disinfectant detergents may potentially disseminate pathogens.

    Conclusions:

    • Alcohol-based hand sanitizers are highly effective for hygienic disinfection.
    • Disinfectant detergents are less effective and pose a risk of pathogen dissemination.
    • The Vienna test model provides a reliable method for standardizing and comparing hand disinfection efficacy.