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GPI Anchoring of Proteins in the ER Membrane
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Methicillin-resistant Staphylococcus aureus: introduction and spread within a hospital

J E Peacock, F J Marsik, R P Wenzel

    Annals of Internal Medicine
    |October 1, 1980
    PubMed

    Insights

    Methicillin-resistant Staphylococcus aureus (MRSA) spread rapidly in a university hospital after community introduction. Early vancomycin therapy is recommended for suspected S. aureus infections in high-MRSA prevalence hospitals.

    Area of Science:

    • Infectious Diseases
    • Hospital Epidemiology
    • Antimicrobial Resistance

    Background:

    • Methicillin-resistant Staphylococcus aureus (MRSA) emerged in a university hospital in March 1978.
    • The index case was community-acquired, leading to rapid nosocomial spread.

    Purpose of the Study:

    • To investigate the epidemiology and clinical impact of MRSA in a university hospital.
    • To determine effective initial therapeutic strategies for MRSA infections.

    Main Methods:

    • Retrospective analysis of MRSA cases over a 6-month period.
    • Epidemiological linkage through phage typing and roommate-to-roommate transmission.
    • Comparison of patient characteristics and treatment between infected and control groups.

    Main Results:

    • MRSA spread to 30 additional patients within 6 months, with 22 linked by phage type and transmission.
    • Sixteen patients developed infections, including six with bacteremia.
    • Patients with MRSA in the ICU had longer stays and higher mortality.
    • By mid-1979, MRSA constituted a significant proportion of nosocomial S. aureus infections.

    Conclusions:

    • Community-acquired MRSA can rapidly disseminate within a hospital setting.
    • Intensive care unit (ICU) patients acquiring MRSA face worse outcomes.
    • Initial empiric vancomycin therapy is advisable for suspected S. aureus infections in hospitals with high MRSA rates.

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