Epidemiología y microbiología de infecciones debidas a Staphylococcus aureus en Misiones. Primer estudio multicéntrico

the aim of this multicentered study was to know the epidemiological and microbiological characteristics of staphylococcus aureus (sa) causing infections in patients of different age groups a prospective cohort study was designed (september to november, 2009), including all new cases of sa infections. ninety-one isolates were obtained. global resistance to methicillin (mrsa) was 57 %. fifty-two infections (57 %) were community-acquired (ca) and 32 (35 %) were hospital acquired (ha). skin and soft tissues were the most frequent infections (49 %). the meca gene was confirmed in 100 % of mrsa strains. the genes for panton valentine leucocidin were found in 23 isolates particularly in both mrsa-ca (12/19) and mssa-ac (7/13). multiresistant isolates were rare (7.73 %) and they were all mrsa-ha. we emphasize the importance of continuous surveillance and standardization of empirical treatment.