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Bacteremia due to methicillin-resistant Staphylococcus aureus.

J P Myers, C C Linnemann

    The Journal of Infectious Diseases
    |April 1, 1982
    PubMed
    Summary

    Methicillin-resistant Staphylococcus aureus (MRSA) caused significant nosocomial bacteremia, particularly in surgical patients. Vancomycin demonstrated superior efficacy in treating MRSA infections compared to other antibiotics.

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    Area of Science:

    • Infectious Diseases
    • Clinical Microbiology
    • Epidemiology

    Background:

    • Methicillin-resistant Staphylococcus aureus (MRSA) is a significant nosocomial pathogen.
    • A specific MRSA strain (phage type D11/83A/85) resistant to multiple antibiotics emerged in an urban hospital.

    Purpose of the Study:

    • To define the epidemiologic characteristics of MRSA bacteremia.
    • To assess the clinical outcomes and treatment efficacy for MRSA infections.

    Main Methods:

    • Retrospective analysis of patient data over a three-year period.
    • Identification and characterization of MRSA isolates from blood cultures and clinical specimens.
    • Comparison of treatment outcomes for vancomycin versus other antistaphylococcal antibiotics.

    Main Results:

    • MRSA was recovered from 260 infected patients, accounting for 30% of S. aureus blood cultures and 50% of S. aureus nosocomial bacteremia.
    • MRSA bacteremia predominantly affected surgical patients (especially burn patients), occurred late in hospitalization, and was associated with wounds and catheters.
    • Mortality rate for MRSA bacteremia was 44%.
    • Vancomycin showed a higher response rate (90%) compared to other antibiotics (47%) for MRSA infections (P < 0.05).

    Conclusions:

    • MRSA exhibits significant virulence and poses a substantial threat in hospital settings.
    • Vancomycin is an effective therapeutic option for MRSA bacteremia.
    • Understanding MRSA epidemiology is crucial for infection control and treatment strategies.

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