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• 作者：Ronald S. Jones
• 关键词：Chlamydiales ; Chlamydophila spp. ; Upper respiratory tract disease ; Calves
• 刊名：The Veterinary Journal
• 出版年：2006
• 出版时间：May 2006
• 年：2006
• 卷：171
• 期：3
• 页码：580
• 全文大小：41 K

文摘

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.