A case-control study on the association of selected risk factors with the occurrence of bovine tuberculosis in the Republic of Ireland
A case-control study on the association of selected risk factors with the occurrence of bovine tuberculosis in the Republic of Ireland
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DOI：
10.1016/0167-5877(95)00571-4
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发表时间：
1996-07-01
影响因子：
2.6
通讯作者：
Hammond, RF
中科院分区：
文献类型：
--
作者：
Griffin, JM;Martin, SW;Hammond, RF
我们对东奥法利地区牛群中牛结核病的发生与一些可能的危险因素进行了病例对照研究：牛群规模、牛的购买量、牛群历史、相邻牛群的状况、距离最近的獾栖息地的距离以及年龄、品种和动物类型等动物因素。对1988年在羊群测试中确认爆发结核病的100个牛群的特征进行了比较，并将这些牛群的特征与当年至少通过一次结核菌素测试的相同数量的牛群的特征进行了比较。研究基地由主要来自奥法利县东部的1379个牛群组成。从畜群和动物两个层面对数据进行了分析。在畜群一级与结核病分类风险增加相关的因素是(1)畜群中的动物总数和(2)在研究的畜群之前或之后的6个月内限制相邻的畜群患结核病。许多因素与动物不能通过结核菌素测试的风险增加有关。在调整了模型中的所有其他变量后，奶牛、小母牛和公牛未能通过结核菌素测试的可能性分别是小牛的10.3、14.8和8.0倍。与上次畜群测试时存在的牛相比，自上次畜群测试后购买的牛不太可能通过结核菌素测试。
We did a case-control study on the association between the occurrence of bovine tuberculosis in herds in the East Offaly area and a number of possible risk factors: herd size, the purchasing of cattle, the herd history, the status of contiguous herds, distance to the nearest badger sett, and animal factors such as age, breed and animal type. The characteristics of 100 herds that had a confirmed outbreak of tuberculosis at a herd test in 1988 were compared with those from an equal number of herds that passed at least one tuberculin test during that year. The study base consisted of 1379 herds mainly from the eastern part of County Offaly. The data were analysed at both herd and animal levels. Factors that were associated with an increased risk of tuberculosis breakdowns at the herd level were (i) the total number of animals in the herd and (ii) the restriction of a contiguous herd for tuberculosis within a period of 6 months prior to or following the herd under study. A number of factors were associated with an animal having an increased risk of failing a tuberculin test. After adjusting for all other variables in the model, cows, heifers and bullocks were 10.3, 14.8 and 8.0 times, respectively, more likely to fail a tuberculin test than calves. Cattle that had been purchased since the previous herd test were less likely to Fail a tuberculin test compared with cattle that had been present at the time of the preceding herd test.