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[Acinetobacter isolates from environmental sampling in hospitals (author's transl)]

H Ohgke, M Steinkohl, E Kanz

    Zentralblatt Fur Bakteriologie, Mikrobiologie Und Hygiene. 1. Abt. Originale B, Hygiene
    |December 1, 1981
    PubMed
    Summary

    Acinetobacter bacteria are found in various environments and show resistance to antibiotics. Certain strains, like Acinetobacter "anitratus", exhibit higher resistance and better survival on dry surfaces compared to other bacteria.

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    Area of Science:

    • Microbiology
    • Environmental Science
    • Clinical Microbiology

    Background:

    • Acinetobacter species are increasingly recognized as opportunistic human pathogens.
    • Understanding their environmental persistence and resistance mechanisms is crucial for infection control.

    Purpose of the Study:

    • To investigate the environmental distribution and survival characteristics of Acinetobacter.
    • To compare the resistance profiles of different Acinetobacter strains.
    • To assess Acinetobacter's adherence and survival on various surfaces.

    Main Methods:

    • Environmental culturing from diverse sources (human, wet/dry sites, air, surfaces).
    • Antibiotic and metal salt resistance testing of isolated strains.
    • Comparative tolerance studies for dryness against Escherichia coli and Micrococcus luteus.

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  • Surface contamination experiments using polyvinyl chloride and paving tiles.

    • Main Results:

    • Acinetobacter was isolated from human sources, wet/dry environments, air, and surfaces.
    • Acinetobacter "anitratus" strains showed dominant resistance to antibiotics and metal salts.
    • Acinetobacter exhibited greater tolerance to dryness than E. coli but less than M. luteus.
    • Higher recovery rates of Acinetobacter were observed on contaminated polyvinyl chloride compared to paving tiles.

    Conclusions:

    • Acinetobacter possesses broad environmental adaptability and significant resistance capabilities.
    • Specific strains, such as Acinetobacter "anitratus", may pose a higher risk due to enhanced resistance.
    • The choice of surface material can influence Acinetobacter persistence in healthcare settings.