Abstract
Methicillin-resistant Staphylococcus aureus isolates from an outbreak of 17 cases of wound infection in a municipal hospital were typed by conventional methods, phage typing by three sets of phages, reverse phage typing and plasmid profiles, as well as by genomic DNA fragment patterns obtained after Sma-I digestion and pulsed-field electrophoresis. These isolates were non-typable by phages, only some were typable by reverse phage typing and were not uniform in plasmid profile. Only the genomic DNA fragment patterns resulted in a clear discrimination of 2 strains (12 isolates for the first and 7 isolates for the second). Both strains were disseminated in different wards of the same hospital and one strain had obviously spread to another clinic in the same city.
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