Escherichia coli y Klebsiella pneumoniae comunitarias y hospitalarias productoras de β-lactamasas en hospitales de Hermosillo, Sonora

Abstract

To determine the prevalence of extended-spectrum β-lactamases (ESBL)-producing Esherichia coli and Klebsiella pneumoniae in hospitals of Hermosillo, Sonora, Mexico. To detect ESBL-production, 1 412 bacterial isolates obtained over a one year period (2008-2009) were analyzed using the double-disk synergy test, with and without clavulanic acid. Hospitalaryacquired ESBL-producing E.coli and K.pneumoniae (31.8% and 35.3%) were isolated with higher prevalence that community-acquired isolates (14.4% and 0.0%) (p<0.005). Our study shows the presence of ESBL-producing bacteria in the three hospitals.