2 research outputs found
Antimicrobial resistance profiles of enterococci isolated from poultry meat and pasteurized milk in Rio de Janeiro, Brazil
Antimicrobial resistance profiles of enterococci isolated from poultry meat and pasteurized milk in Rio de Janeiro, Brazil
The enterococci are important nosocomial pathogens with a remarkable
capacity of expressing resistance to several antimicrobial agents.
Their ubiquitous nature and resistance to adverse environmental
conditions take account for their ability to colonize different
habitats and for their potential for easy spreading through the food
chain. In the present study we evaluated the distribution of species
and antimicrobial susceptibility among enterococcal isolates recovered
from food obtained in retail stores in Rio de Janeiro, Brazil. The
following species were identified among 167 isolates obtained from
poultry meat and 127 from pasteurized milk: Enterococcus faecalis
(62.6%), E. casseliflavus (17.3%), E. durans (6.5%), E. gallinarum
(3.0%), E. gilvus (2.4%), E. faecium (2.0%), E. hirae (1.4%), and E.
sulfureus (1.0%). The overall percentages of antimicrobial resistant
isolates were: 31.2 % to tetracycline, 23.8% to erythromycin, 11.3% to
streptomycin, 4.3% to chloramphenicol, 3.9% to gentamicin, 1.4% to
norfloxacin, 1.1% to imipenem, 0.7% to ciprofloxacin, nitrofurantoin,
and penicillin, and 0.4% to ampicillin. Intermediate resistance was
detected in frequencies varying from 0.5% for linezolid to 58.2% for
erythromycin. None of the isolates showed resistance to glycopeptides.
High-level resistance to aminoglycosides was observed in 13.1% of the
isolates. Multiresistance was observed in E. faecalis, E.
casseliflavus, E. faecium, E. gallinarum, E. durans and E. gilvus