Twomey D F, Griffiths P C, Horigan M W, Hignett B C, Martin T P
Veterinary Laboratories Agency, Staplake Mount, Starcross, Exeter, Devon EX6 8PE, UK.
Vet J. 2006 May;171(3):574-6. doi: 10.1016/j.tvjl.2004.12.012.
An outbreak of upper respiratory tract disease was investigated in a group of 17 housed home-bred calves on a mixed dairy, beef and sheep farm in Devon. Conjunctival swabs were collected and tested for Chlamydophila spp. DNA using a PCR test that detects Chlamydophila abortus and Chlamydophila psittaci. Six of the calves tested gave a positive result. Further epidemiological observations and laboratory testing indicated that the adult dairy cows, from which the affected calves originated, were the most likely source of infection.
在德文郡一个兼营奶牛、肉牛和绵羊养殖的混合农场里，对一组17头圈养的家养小牛爆发的上呼吸道疾病进行了调查。采集了结膜拭子，使用一种能检测流产嗜衣原体和鹦鹉热嗜衣原体的聚合酶链反应（PCR）检测法检测嗜衣原体属DNA。检测的小牛中有6头呈阳性结果。进一步的流行病学观察和实验室检测表明，受感染小牛所来自的成年奶牛极有可能是感染源。
