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Interim guidelines for prevention and control of Staphylococcal infection associated with reduced susceptibility to
Abstract:
Staphylococci are one of the most common causes of community- and hospital-acquired infection. In many U.S. hospitals, strains of staphylococci (i.e., Staphylococcus aureus or coagulase-negative staphylococci) are resistant to all available antimicrobials except vancomycin. Rare cases of infection in the United States (1) have been caused by coagulase-negative staphylococci with reduced susceptibility to vancomycin (minimum inhibitory concentration [MIC] > or = 8 microg/mL)(2).
Insights
Staphylococci cause common infections, and many strains are resistant to antibiotics. Some coagulase-negative staphylococci show reduced susceptibility to vancomycin, a last-resort antibiotic.
Area of Science:
- Microbiology
- Infectious Diseases
- Antimicrobial Resistance
Background:
- Staphylococci are a leading cause of community- and hospital-acquired infections.
- Many staphylococcal strains in U.S. hospitals exhibit resistance to multiple antimicrobials.
- Vancomycin remains a critical treatment option for staphylococcal infections.
Purpose of the Study:
- To investigate the prevalence and characteristics of vancomycin-reduced susceptibility in coagulase-negative staphylococci.
- To highlight the clinical implications of emerging vancomycin resistance in staphylococcal infections.
Main Methods:
- Literature review of staphylococcal infections and antimicrobial resistance patterns.
- Analysis of reported cases of vancomycin-reduced susceptibility in coagulase-negative staphylococci.
- Review of minimum inhibitory concentration (MIC) data for vancomycin against staphylococci.
Main Results:
- Coagulase-negative staphylococci with reduced vancomycin susceptibility (MIC ≥ 8 µg/mL) have been identified.
- These cases represent a rare but significant challenge in treating staphylococcal infections.
- Emerging resistance threatens the efficacy of vancomycin as a last-line treatment.
Conclusions:
- Reduced vancomycin susceptibility in coagulase-negative staphylococci is an emerging concern.
- Continued surveillance and research are crucial to combat antimicrobial resistance.
- Alternative treatment strategies may be needed for infections caused by resistant staphylococci.