Division of Biomedical Food Research, National Institute of Health Sciences, Kanagawa, Japan.
Department of Applied Veterinary Science, the United Graduate School of Veterinary Science, Gifu University, Gifu, Japan.
J Vet Med Sci. 2022 Jul 25;84(7):1029-1033. doi: 10.1292/jvms.22-0055. Epub 2022 Jun 1.
As free-living crows are a potential source of Campylobacter infections in broilers and cattle, we characterized Campylobacter spp. isolated from crows using multilocus sequence typing and antimicrobial susceptibility testing. We obtained 82 samples from 27 birds captured at seven different times using a trap set in Tochigi prefecture, Japan. Campylobacter jejuni was isolated from 55 (67.1%) of the 82 samples and classified into 29 sequence types, of which 21 were novel. Tetracycline and streptomycin resistance rates were 18.2% and 3.6%, respectively. These results show that most types of C. jejuni infecting crows differ from those isolated from humans, broilers, and cattle. Thus, the importance of free-living crows as reservoirs of Campylobacter infections in broilers and cattle may be limited.
由于自由生活的乌鸦是肉鸡和牛群中弯曲杆菌感染的潜在来源，我们使用多位点序列分型和抗菌药物敏感性试验对从乌鸦中分离出的弯曲杆菌进行了特征描述。我们从日本栃木县的一个陷阱中捕获的 27 只鸟的 82 个样本中获得了弯曲杆菌。从 82 个样本中的 55 个（67.1%）分离出空肠弯曲杆菌，并将其分为 29 种序列类型，其中 21 种是新的。四环素和链霉素的耐药率分别为 18.2%和 3.6%。这些结果表明，感染乌鸦的大多数空肠弯曲杆菌类型与从人类、肉鸡和牛中分离出的空肠弯曲杆菌不同。因此，自由生活的乌鸦作为肉鸡和牛弯曲杆菌感染的储存宿主的重要性可能有限。
