ESBL-Producing Enterobacteriaceae: Occurrence, Risk Factors for Fecal Carriage and Strain Traits in the Swiss Slaughter Cattle Population Younger than 2 Years Sampled at Abattoir LevelReportar como inadecuado




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During the past decade extended-spectrum beta-lactamase ESBL producing Enterobacteriaceae have become a matter of great concern in human and veterinary medicine. In this cross-sectional study fecal swabs of a geographically representative number of Swiss cattle at slaughterhouse level were sampled i to determine the occurrence of ESBL producing Enterobacteriaceae in the Swiss slaughter cattle population younger than 2 years, and ii to assess risk factors for shedding ESBL producing Enterobacteriaceae. In total, 48 8.4%; 95% C.I. 6.3–11.1% independent ESBL producing Enterobacteriaceae were detected among the 571 tested animals. Species identification revealed 46 E. coli strains, one Enterobacter cloacae and one Citrobacter youngae. In view of beta-lactam antibiotics, all 48 isolates were resistant to ampicillin, cephalothin and cefpodoxime. Forty-five 93.8% isolates were resistant cefuroxime; one 2.1% isolate to cefoxitin, 28 58.3% isolates to cefotaxime, 2 4.2% isolates to ceftazidime, and 2 4.2% isolates to cefepime. Risk factors for shedding ESBL producing Enterobacteriaceae were i age OR 0.19 and 0.12 in age category 181 d to 1y and 1y to 2 y compared to ≤180 d, ii primary production type, meaning dairy compared to beef on farm of origin OR 5.95, and iii more than 1 compared to less than 1 animal movement per d per 100 animals on farm of origin OR 2.37.



Autor: Martin Reist, Nadine Geser, Herbert Hächler, Sara Schärrer, Roger Stephan

Fuente: http://plos.srce.hr/



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