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Antibiotic resistant Escherichia coli and Salmonella in Russian rooks (Corvus frugilegus) wintering in the Czech Republic

Literák, I., Vanko, R., Dolejská, M., Čížek, A., Karpíšková, R.
Letters in applied microbiology 2007 v.45 no.6 pp. 616-621
Corvus frugilegus, Escherichia coli, Salmonella Enteritidis, antibiotic resistance, bacteriophages, feces, genes, serotypes, tetracycline, Czech Republic
To characterize antibiotic resistant Escherichia coli and Salmonella isolates in rooks wintering in the Czech Republic. Three hundred and sixty-three faeces samples from rooks were examined for antibiotic resistant Escherichia coli and Salmonella. Altogether 13.7%E. coli isolates were resistant to antimicrobial agents tested. The dominant type of resistance was to tetracycline. Resistant E. coli isolates were examined for antibiotic resistance genes and class 1 integrons. Five of 29 antibiotic resistant isolates possessed the int1 gene. Nine Salmonella isolates (2.5%) were found in rook faeces. All the isolates belonged to serotype Salmonella enterica serovar Enteritidis phage type PT8 and PT23. The study suggests that rooks can be infected by antibiotic resistant E. coli and Salmonella isolates, probably reflecting the presence of such isolates in their sources of food and/or water in the environment. Rooks can serve as reservoirs and vectors of antibiotic resistant E. coli and Salmonella isolates and potentially transmit these isolates over long distances.