SciELO - Scientific Electronic Library Online

 
vol.35 número3Infection and colonization by Gram-negative bacilli in neonates hospitalized in High Risk Nursery at Uberlandia Federal University Hospital: etiology, resistant phenotypes and risk factorsGenetic variability within Fusarium solani specie as revealed by PCR-fingerprinting based on pcr markers índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Brazilian Journal of Microbiology

versión On-line ISSN 1678-4405

Resumen

D'AZEVEDO, Pedro Alves et al. Antimicrobial susceptibility among Enterococcus isolates from the city of Porto Alegre, RS, Brazil. Braz. J. Microbiol. [online]. 2004, vol.35, n.3, pp. 199-204. ISSN 1678-4405.  http://dx.doi.org/10.1590/S1517-83822004000200005.

Resistance to several classes of antimicrobial agents is a remarkable characteristic of enterococcal strains increasingly reported worldwide. Information about strains isolated in the southern region of Brazil is still limited. In this study, a total of 455 consecutive enterococcal isolates recovered from patients living in Porto Alegre, Brazil, were identified at species level and evaluated for their antimicrobial susceptibilities by agar diffusion testing. The most frequent species was E. faecalis (92.8%), followed by E. faecium (2.9%), E. gallinarum (1.5%), E. avium (1.1%), E. hirae (0.7%), E. casseliflavus (0.4%), E. durans (0.4%), and E. raffinosus (0.2%). According to the results of disk tests 62.0% of the strains were resistant to tetracycline, 42.6% to erythromycin, 24.8% to chloramphenicol, 22.6% to ciprofloxacin, 22.0% to norfloxacin, 3.5% to ampicillin, 3.5% to nitrofurantoin. High level resistance to aminoglycosides was found in 37.8% of the isolates, with 23.5% being resistant to gentamicin, 14.3% to streptomycin, and 2.8% to both gentamicin and streptomycin. No vancomycin resistant or b-lactamase producing isolates were found. The results indicate that a significant percentage of isolates are resistant to different antimicrobials, pointing out the need for control strategies to avoid dissemination of resistant isolates and for continuous surveillance for the detection of emerging resistance traits.

Palabras clave : enterococcal; antimicrobial susceptibility; resistance.

        · resumen en Portugués     · texto en Inglés     · Inglés (pdf) Inglés (epdf)