Abstract
We describe the selection of reduced chlorhexidine susceptibility during chlorhexidine use in a patient with two episodes of cutaneous USA300 methicillin-resistant Staphylococcus aureus abscess. The second clinical isolate harbors a novel plasmid that encodes the QacA efflux pump. Greater use of chlorhexidine for disease prevention warrants surveillance for resistance.
Copyright © 2015, American Society for Microbiology. All Rights Reserved.
Publication types
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Case Reports
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Abscess / diagnosis
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Abscess / drug therapy*
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Abscess / microbiology
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Adolescent
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Bacterial Proteins / genetics*
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Chlorhexidine / therapeutic use
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Disinfectants / therapeutic use*
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Drug Resistance, Bacterial / genetics*
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Humans
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Male
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Membrane Transport Proteins / genetics*
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Methicillin-Resistant Staphylococcus aureus / drug effects*
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Methicillin-Resistant Staphylococcus aureus / genetics
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Methicillin-Resistant Staphylococcus aureus / isolation & purification
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Microbial Sensitivity Tests
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Military Personnel
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Molecular Sequence Data
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Plasmids / genetics
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Recurrence
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Selection, Genetic / drug effects
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Selection, Genetic / genetics
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Skin Diseases, Bacterial / diagnosis
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Skin Diseases, Bacterial / drug therapy*
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Skin Diseases, Bacterial / microbiology
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Staphylococcal Infections / diagnosis
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Staphylococcal Infections / drug therapy*
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Staphylococcal Infections / microbiology
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Surveys and Questionnaires
Substances
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Bacterial Proteins
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Disinfectants
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Membrane Transport Proteins
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qacA protein, Staphylococcus aureus
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Chlorhexidine