Prevalence of bovine tuberculosis in the Aksu Region of Xinjiang, China, between 1985 and 2016

ABSTRACT Prevalence of bovine tuberculosis infection in cattle in Aksu Prefecture determined by intradermal tuberculin skin test (TST), between 1985 and 2016. Cattle were analyzed according to region, feeding pattern, herds and age. A total of 890,009 cattle were tested, with overall bovine tuberculosis prevalence of 0.13% (1172/890009). Statistically significant difference was found in feeding pattern and herds. Prevalence in cows (0.19%, 615/327022) was higher than that in beeves (P< 0.01, OR= 1.903, 95% CI = 1.696 to 2.134). Significant difference (P< 0.01; OR= 2.238, 95%; CI= 1.937 to 2.585) was evident for rates for bovine tuberculosis in the peasant household (0.12%, 942/802343) and farm groups (0.26%, 230/87666). The overall prevalence of bTB was decreased in the Aksu Prefecture, especially the positive rate was under 0.1% in 2010s. We concluded that the control measures forbovine tuberculosis in the Aksu region cattle herds are effective.

摘要：本研究基于结核菌素皮内试验（intradermal tuberculin skin test, TST），分析了1985年至2016年间阿克苏地区牛结核病（bovine tuberculosis, bTB）的感染流行情况。研究按养殖区域、饲喂模式、畜群类别及年龄对受试牛只开展分组分析，共计检测牛只890009头，整体牛结核病感染率为0.13%（1172/890009）。不同饲喂模式与畜群类别间的感染率差异具有统计学意义；泌乳母牛感染率为0.19%（615/327022），显著高于肉牛（P<0.01，优势比OR=1.903，95%置信区间CI=1.696~2.134）。散户养殖与规模养殖集群的牛结核病感染率同样存在显著统计学差异（P<0.01，优势比OR=2.238，95%置信区间CI=1.937~2.585），其中散户感染率为0.12%（942/802343），规模养殖集群感染率为0.26%（230/87666）。阿克苏地区牛结核病整体感染率呈下降趋势，2010年代阳性率更是降至0.1%以下。本研究结论表明，阿克苏地区针对牛群实施的牛结核病防控措施成效显著。