Article
Evidence for a Clonal Origin of Methicillin Resistance in <i>Staphylococcus aureus</i>
8 Jan 1993
Abstract excerpt
Soon after methicillin was introduced into clinical practice in the early 1960s, resistant strains of Staphylococcus aureus (MRSA) appeared, bearing a newly acquired resistance gene, mecA, that encodes a penicillin binding protein, PBP2a. MRSA have spread throughout the world, and an investigation of the clonality of 472 isolates by DNA hybridization was performed. All 472 isolates could be divided into six...
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