O'Grady Don, Kenny Kevin, Power Seamus, Egan John, Ryan Fergus
Department of Agriculture, Food, and the Marine, Central Veterinary Research Laboratory, Backweston, Celbridge, Co. Kildare, Ireland; School of Biological Sciences, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland.
Department of Agriculture, Food, and the Marine, Central Veterinary Research Laboratory, Backweston, Celbridge, Co. Kildare, Ireland.
Vet J. 2016 Oct;216:133-5. doi: 10.1016/j.tvjl.2016.07.016. Epub 2016 Aug 2.
Intestinal infection by Yersinia enterocolitica serotype O:9 (YeO9) in cattle has been linked to false positive serological reactivity (FPSR) in diagnostic tests for brucellosis. Although eradicated in Ireland, brucellosis monitoring still identifies seropositive animals, usually one or two (termed singletons) per herd, which are classed as FPSR. To investigate a link between FPSR and YeO9, faeces and blood were collected from singleton FPSR cattle, and from companion animals, in eight selected herds with more than one FPSR animal, for YeO9 culture and Brucella serology. YeO9 was isolated from 76/474 (16%) FPSR singletons in 309 herds, but not from any of 621 animals in 122 control non-FPSR herds. In the FPSR herds 52/187 (27.8%) animals were culture positive, and 17% of the isolates were from seronegative animals. Seropositive animals were more likely to have a rising antibody titre when culture positive.
牛感染肠炎耶尔森菌O:9血清型（YeO9）与布鲁氏菌病诊断检测中的假阳性血清反应性（FPSR）有关。尽管爱尔兰已根除布鲁氏菌病，但布鲁氏菌病监测仍能识别出血清学阳性动物，通常每群有一两只（称为单例），这些动物被归类为FPSR。为了研究FPSR与YeO9之间的联系，从8个选定的有不止一只FPSR动物的牛群中，收集了单例FPSR牛及其伴侣动物的粪便和血液，用于YeO9培养和布鲁氏菌血清学检测。在309个牛群的474例FPSR单例中，76例（16%）分离出YeO9，但在122个对照非FPSR牛群的621只动物中均未分离出。在FPSR牛群中，187只动物中有52只（27.8%）培养呈阳性，17%的分离株来自血清学阴性动物。培养呈阳性时，血清学阳性动物的抗体滴度更有可能上升。
