Gouteux J P, Toudic A, Sinda D
ORSTOM, Centre de Brazzaville, Congo.
Acta Trop. 1988 Dec;45(4):331-8.
A large-scale control trial against Glossina palpalis palpalis was carried out in the Congo using a new trapping technique. In the same way a test related to the experimental utilization of sentinel animals was performed, concurrently to the classical epidemiological and entomological evaluation. 564 domestic animals (pigs, sheep, goats) were examined parasitologically (wet blood films, Woo/HCT) and serologically (Testryps CATT) in six villages. When a drastic reduction of tsetse populations was achieved (i.e. zero point of apparent density) a parasitological negativation was first noted after one year and a complete serological negativation was observed after two years. If only a relative decrease in the vector's apparent densities occurred, it was related with a lower of sero-parasitological prevalence rate. The use of a serological test which was able to detect Trypanosoma congolense antibodies as the Testryp CATT, is a particularly useful technique for estimating the animal transmission level. These first results give some arguments that a parasitological and serological continuous of sentinel animals as pigs and sheep is a useful mean for evaluating the efficiency of a control campaign against sleeping sickness vectors.
在刚果，采用一种新的诱捕技术对冈比亚采采蝇进行了大规模对照试验。同样，在进行经典流行病学和昆虫学评估的同时，开展了一项与使用哨兵动物进行实验性利用相关的试验。在六个村庄对564头家畜（猪、绵羊、山羊）进行了寄生虫学检查（湿血片、Woo/HCT）和血清学检查（Testryps CATT）。当采采蝇种群数量大幅减少（即表观密度为零）时，一年后首次出现寄生虫学阴性结果，两年后观察到完全血清学阴性结果。如果仅出现媒介表观密度的相对下降，则与血清寄生虫学患病率降低有关。使用能够检测刚果锥虫抗体的血清学检测方法（如Testryp CATT），是估计动物传播水平的一项特别有用的技术。这些初步结果表明，对猪和绵羊等哨兵动物进行寄生虫学和血清学持续监测，是评估昏睡病媒介控制运动效果的一种有用方法。
