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Low prevalence of bovine tuberculosis in Somali pastoral livestock, southeast Ethiopia

机译：埃塞俄比亚东南部索马里牧民的牛结核病患病率低

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摘要

A cross-sectional study of bovine tuberculosis (BTB) detected by the comparative intradermal tuberculin test (CIDT) was conducted in livestock of the Somali region in southeast Ethiopia—in four pastoral associations from January to August 2009. In 94 herds, each of 15 cattle, camels, and goats was tested per herd leading to a total of 1,418 CIDT tested animals, with 421 cattle, 479 camels, and 518 goats. A herd was considered positive if it had at least one reactor. Prevalence per animal species was calculated using a xtgee model for each species. The individual animal prevalence was 2.0% [95% confidence interval (CI), 0.5–8.4], 0.4% (95% CI, 0.1–3%), and 0.2% (95% CI, 0.03–1.3) in cattle, camels, and goats, respectively. Prevalence of avian mycobacterium purified protein derivative (PPD) reactors in cattle, camels, and goats was 0.7% (95% CI, 0.2–2.0%), 10.0% (95% CI, 7.0–14.0%), and 1.9 (95% CI, 0.9–4.0%), respectively, whereby camels had an odds ratio of 16.5 (95% CI, 5.0–55.0) when compared to cattle. There was no significant difference between livestock species in BTB positivity. In the present study, the prevalence of bovine tuberculosis was low in Somali pastoral livestock in general and in camels and goats in particular. The high proportion of camel reactors to avian PPD needs further investigation of its impact on camel production.
机译：2009年1月至2009年8月，在四个埃塞俄比亚牧区协会对埃塞俄比亚东南部索马里地区的牲畜进行了比较性皮内结核菌素试验（CIDT）检测的牛结核病（BTB）横断面研究。在94个牧群中，每15只对牛，骆驼和山羊进行了逐群测试，总共测试了1,418只CIDT动物，其中包括421头牛，479头骆驼和518只山羊。如果一个畜群至少有一个反应堆，则被认为是阳性的。使用每种物种的xtgee模型计算每种动物的患病率。牛，骆驼的个体动物患病率是2.0％[95％置信区间（CI），0.5-8.4]，0.4％（95％CI，0.1-3％）和0.2％（95％CI，0.03-1.3）和山羊。牛，骆驼和山羊中禽分枝杆菌纯化蛋白衍生物（PPD）反应器的患病率分别为0.7％（95％CI，0.2-2.0％），10.0％（95％CI，7.0-14.0％）和1.9（95％） CI为0.9–4.0％），与牛相比，骆驼的优势比为16.5（95％CI为5.0–55.0）。牲畜种类之间的BTB阳性率没有显着差异。在本研究中，牛结核病的流行率在索马里牧民中普遍较低，尤其是在骆驼和山羊中。骆驼反应堆占鸟类PPD的比例很高，需要进一步研究其对骆驼生产的影响。

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