四川省汶川县黑热病流行病学调查研究

本文报道四川省汶川县黑热病流行情况的调查结果。1987年以来共确诊患者141例,分布在两区一镇六个乡,发病年龄以5岁以下儿童为主,发病季节以春夏季为多。对5个村寨的调查,凡病犬多的村寨都有黑热病人发生,证实汶川黑热病流行与犬内脏利什曼病的感染有着密切关系。此外,间有病人相距很近或一家中有数例患者先后发病的现象。在调查的125只家犬中,以1～3龄的家犬发病较高。中华白蛉为当地唯一媒介。

Current Situation of Kala-azar in Wenchuan County Sichuan, China

The result of epidemiological survey of kala-azar in Wenchuan County, Sichuan Province, has been reported in this paper. Totally 141 human kala-azar cases, distributed in six townships have been confirmed in the county since 1987. Children under 5 years old constituted the majority of the patients (66.7%). The disease could be infected in every month of a year but mainly in spring and summer. Investigation in five villages showed that there was a close relation between human and dog infections, for the patients could be easily found in villages with high infection rate of the dog, and that the disease could be transmitted from human to human since several patients could be detected in a same family and in some villages, patients lived relatively close. Examination of 125 domestic dogs indicated that the dogs of 1 to 5 years old had the highest infection rate. Phlebotomus chinensis is the sole vector of kala-azar in the local area.