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Revista argentina de microbiología

versión On-line ISSN 1851-7617


GARDELLA, N. et al. Methicillin-resistant Staphylococcus aureus strains in Buenos Aires Teaching Hospitals: replacement of the multidrug resistant South American clone by another susceptible to rifampin, minocycline and trimethoprim-sulfamethoxazole. Rev. argent. microbiol. [online]. 2005, vol.37, n.3, pp. 156-160. ISSN 1851-7617.

The aim of this study was to characterize methicillin-resistant Staphylococcus aureus (MRSA) isolates recovered from different infectious sites of hospitalized patients at two university hospitals. Fourteen isolates were analyzed by repetitive sequence based PCR (Rep-PCR), randomly amplified polymorphic DNA assay (RAPD-PCR), and pulsed-field gel electrophoresis (PFGE). We found that a prevalent clone of MRSA, susceptible to rifampin, minocycline, and trimethoprim/sulfamethoxazole (RIFS, MINS, TMSS) was present in both hospitals in replacement of the multiresistant MRSA South American clone, previously described in these hospitals. The staphylococcal chromosomal cassette (SCCmec) type I element was detected in this new clone.

Palabras clave : MRSA; mecA; SCCmec; epidemiology; molecular typing; PFGE.

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