National surveillance of <it>Salmonella enterica </it>in food-producing animals in Japan
2009
Kijima Mayumi | Kojima Akemi | Morioka Ayako | Takahashi Toshio | Ishihara Kanako | Asai Tetsuo | Tamura Yutaka
<p>Abstract</p> <p>A total of 518 fecal samples collected from 183 apparently healthy cattle, 180 pigs and 155 broilers throughout Japan in 1999 were examined to determine the prevalence and antimicrobial susceptibility of <it>Salmonella</it>. The isolation rates were 36.1% in broilers, 2.8% in pigs and 0.5% in cattle. <it>S. enterica </it>Infantis was the most frequent isolate, found in 22.6% of broiler fecal samples. Higher resistance rates were observed against oxytetracycline (82.0%), dihydrostreptomycin (77.9%), kanamycin (41.0%) and trimethoprim (35.2%). Resistance rates to ampicillin, ceftiofur, bicozamycin, chloramphenicol and nalidixic acid were <10%. CTX-M-2 β-lactamase producing <it>S. enterica </it>Senftenberg was found in the isolates obtained from one broiler fecal sample. This is the first report of cephalosporin-resistant <it>Salmonella </it>directly isolated from food animal in Japan.</p>
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