摘要
自1985～1989年10月,在陇南和川北山区的10个县内,散在发生黑热病1133例,而且疫区有逐渐蔓延趋势。患者主要分布在河流两岸傍山的村落,5岁以下儿童占75%,男多于女,汉、回、藏、羌4个民族均有发病。病犬是当地主要传染源,据调查,犬感染率为7.7～16.6%,病人与病犬分布一致。传播媒介为中华白蛉。1978年前由于彻底灭犬,使病人数大为降低,但后来随养犬数量增多,病犬与病人俱增;仅靠治疗病人,不能降低发病率;杀虫药滞留喷洒杀灭白蛉,能使病人数“缓慢下降”。对该地区今后防治工作进行了讨论。
A total of 1133 cases of kala azar occurred sporadically in a mountainous regi- on of 10 counties of southern Gansu and northern Sichuan Provinces from 1985 to the October of 1989.The cases detected were mainly distributed in the villages along both sides of the rivers.The infectious foci were with a tendency of spreading out.Out of the total infections,approximately 75% were children under the age of 5 and male were more than females.All the cases belonged to 4 nationalities of Chinese,i.e.Han, Hui,Zang and Qiang. It was ascertained that the diseased dogs were the main souce of infection in the locality.According to the investigation the infection rates in the dogs were between- 7.7-16.6% and the distribution of human infections was in accordance with that of the diseased dogs.The transmission vector was Phlebotonus sinensis.Before 1978 the num ber of cases was greatly reduced followed a thorough campaign of the elimination of the dogs,but later the numbers of the diseased dogs and patients increased with the increasing number of the dogs. It was concluded that the infection rate could not be brought down if solely depend- ing on the treatment of the cases.Residual spraying of decamethrin insecticide to des- troy the Phtebotomus sinensis could slowly reduce the number of the infections.Under this circumstances the measures to be taken for the control of the disease were discu ssed in this paper.
出处
《中国寄生虫病防治杂志》
CSCD
1990年第1期13-16,共4页
Chinese Journal of Parasitic Disease Control
