防制中华白蛉对控制内脏利什曼病的效果追踪

目的　观察灭蛉与家犬药浴措施后对内脏利什曼病流行的影响。　方法　在四川省南坪县野外洞穴用奋斗呐(50mg/m2)滞留喷洒灭蛉和药浴 (2.5%溴氰菊脂可湿性粉剂250mg/L)家犬防治中华白蛉措施后,逐年进行野外洞穴白蛉密度观察和当地内脏利什曼病的流行病学调查。　结果　野外洞穴白蛉密度得到有效控制。家犬药浴和白蛉密度降低后,对控制内脏利什曼病起到一定作用。　结论　在内脏利什曼病流行区,采取家犬药浴和野外洞穴药物滞留喷洒灭蛉措施,对预防和阻断内脏利什曼病传播具有重要作用。

The Effect of Sandfly Control on the Transmission of Visceral Leishmaniasis

Objective To observe the effect of Phlebotomus chinensis control including insecticide residual spraying in the habitats and bathing for dogs on the transmission of visceral leishmaniasis in Nanping of Sichuan Province. Methods Alphamethrin with a dosage of 50 mg/m2 was sprayed in the wild caves and 2.5% deltamethrin wettable power at a concentration of 250 mg/L was applied for dog bathing in the villages. The density of sandflies in the natural caves was examined and data on the incidence of visceral leishmaniasis were collected from epidemiological survey following the sandfly control measures. Results The density of sandflies has been considerably reduced after the chemical spraying in caves, the important habitats of the sandflies. By both the cave spraying and bathing for dogs since 1993, the reported human cases of laishmaniasis also decreased. Conclusion Measures for sandfly control including insecticide spraying in the habitats and bathing for dogs with insecticide solution can significantly reduce the sandfly density, and can contain the transmission of visceral leishmaniasis in the endemic area.