alexa Increasing antibiotic resistance among methicillin-resistant Staphylococcus aureus strains.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Proteomics & Bioinformatics

Author(s): Sakoulas G, Moellering RC Jr

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Abstract Vancomycin use has increased dramatically worldwide since the mid-1980s, largely as a result of empirical and directed therapy against burgeoning methicillin-resistant Staphylococcus aureus (MRSA) infections. With limited choices, clinicians have traditionally relied on vancomycin alone in the management of serious MRSA infections and have enjoyed a significant period free of vancomycin resistance in S. aureus. Even now, 5 decades after its introduction, vancomycin resistance among S. aureus strains, as currently defined microbiologically, remains rare. Yet it is becoming clear that vancomycin is losing potency against S. aureus, including MRSA. Serious infections due to MRSA defined as susceptible in the laboratory are not responding well to vancomycin. This is demonstrated by increased mortality seen in patients with MRSA infection and markedly attenuated vancomycin efficacy caused by vancomycin heteroresistance in S. aureus. Therefore, it appears that our definition of vancomycin susceptibility requires further scrutiny as applied to serious MRSA infections, such as bacteremia and pneumonia. This article was published in Clin Infect Dis and referenced in Journal of Proteomics & Bioinformatics

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