IRD, UMR Trypanosomes, TA A-17/A Campus International de Baillarguet, 34398 Montpellier Cedex 5, France.
Res Vet Sci. 2010 Jun;88(3):470-7. doi: 10.1016/j.rvsc.2009.10.010. Epub 2009 Dec 30.
The present study was conducted to determine the prevalence and incidence of trypanosomosis and to investigate some factors influencing them in an agro-pastoral area of southwestern Burkina Faso. A total of 363 crossbred cattle (Baoule-zebu peul), which were bred under natural trypanosomosis challenge, were monitored monthly for parasitaemia, packed cell volume (PCV) and serological analyses over 2years. The parasitological prevalence estimated at the beginning of the survey using the buffy coat technique (BCT) was 7.54%. As much as 66.7% of all trypanosome infections were due to Trypanosoma vivax, 23.8% due to Trypanosoma congolense and 9.5% due to T. vivax/T. congolense mixed infections. The monthly serological incidence varied from 0.29% to 19.29%. The season was the most important factor influencing the serological prevalence and incidence and the animal PCV. The dry hot season is associated with increasing seroprevalences and incidences and consequently a decreasing average of PCV. In addition, an important spatial heterogeneity was observed.
本研究旨在确定布基纳法索西南部农牧区锥虫病的流行率和发病率，并调查影响这些疾病的一些因素。在两年的时间里，对 363 头（Baoule-zebu peul）杂交牛进行了监测，这些牛在自然锥虫病的挑战下繁殖，每月进行一次寄生虫血症、红细胞压积（PCV）和血清学分析。在调查开始时，使用血膜技术（BCT）估计的寄生虫流行率为 7.54%。高达 66.7%的所有锥虫感染是由锥虫引起的，23.8%是由刚果锥虫引起的，9.5%是由锥虫/刚果锥虫混合感染引起的。每月血清学发病率从 0.29%到 19.29%不等。季节是影响血清流行率和发病率以及动物 PCV 的最重要因素。干热季节与血清阳性率和发病率的增加以及平均 PCV 的降低有关。此外，还观察到了重要的空间异质性。
