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Occurrence of vancomycin-resistant enterococci in hens in the central region of Moravia

KOLAR M, BARDON J, VAGNEROVA I, HAJEK V, BZDIL J, KOHNOVA I, TYPOVSKA H
Veterinarni Medicina 45, 2000, 93-97

Occurrence of vancomycin-resistant enterococci (VRE) in animals in the central part of Moravia is described. It is the first finding of VRE in animals in the Czech Republic. A total number of 109 strains of the genus Enterococcus were isolated from various biological material of different animal species (561 samples) in the period of January to April 1999. One Enterococcus faecium strain isolated from hens was found to be resistant to vancomycin. On the basis of this result targeted monitoring of poultry breeding was performed and 112 smears from the cloaca and 8 from pathological material taken during routine autopsies were investigated. From these 120 specimens, 48 strains of Enterococcus sp, were obtained and three of them were identified as vancomycin-resistant enterococci. The percentages of VRE isolated thus reached 2.5% in the group of all examined specimens and 6.3% in the group of all enterococci. The frequence of multiresistance was determined as 72.9% of all enterococcal strains from poultry breeding in the farm P. On the whole, four VRE strains were isolated while three of them were identified as Enterococcus faecium phenotype VanA and one as Enterococcus sp. group III, phenotype VanB


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