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Revista Medica Herediana

versión On-line ISSN 1729-214X

Resumen

TAMARIZ, Jesús et al. Methicillin resistant Staphylococcus aureus isolates acquired in the community in three hospitals in Lima, Peru. Rev Med Hered [online]. 2010, vol.21, n.1, pp. 4-10. ISSN 1729-214X.

Background : Staphylococcus aureus is an important pathogen involved in a series of infections and toxin mediated syndromes, has many virulence factors and its impact increases its resistance to antimicrobial agents. Objectives: To determine the frequency of community acquired methicillin resistant Staphylococcus aureus among hospitals in Lima -Peru. Material and Methods: We performed a prospective multicenter study. The resistance to methicillin was determined by the Oxacillin Agar Screen method. The origin of the strain was determined using CDC criteria, the Panton Valentine Leucocidin was identified by molecular methods. Results: We isolated 276 strains of Staphylococcus aureus, 160 were resistant to methicillin (58%). 9 strains were identified as community acquired MRSA (5.6%). The Panton Valentine Leucocidin was identified in 25 strains (9.1%), 14 were MSSA and 11 MRSA, only 4 of the latter were CA MRSA, 7 were HA MRSA (p <0.001). Conclusions: The study showed frequencys of methicillin resistance, but low CA MRSA. In our environment the presence of PVL would not be a marker for the identification of CA MRSA. (Rev Med Hered 2010;21:4-10).

Palabras llave : Staphylococcus aureus; methicillin-resistant; community.

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