江西省广州管圆线虫自然疫源地调查

Distribution of natural epidemic foci of Angiostrongylus cantonensis in Jiangxi Province

目的调查江西省广州管圆线虫自然疫源地。方法以水系为线索抽查会昌等8个县(市、区)的1个行政村内广州管圆线虫中间宿主、转续宿主和终宿主及其感染情况。结果会昌县、信丰县、瑞金市、章贡区、青原区和进贤县鼠粪阳性率分别为3.23%、6.49%、2.30%、2.44%、2.99%和1.43%,泰和县、贵溪市未发现阳性鼠粪。除进贤县外,其余7个县均有福寿螺自然生长,其中会昌县、信丰县、泰和县和青原区福寿螺感染率分别为15.52%、12.07%、1.87%和2.59%,章贡区、瑞金市和贵溪市未检及阳性。调查了6个县的蛞蝓,4个县发现蛞蝓阳性,青原区最高为11.32%,进贤和贵溪为阴性。调查5个县青蛙,阳性率进贤最高达10.91%,贵溪为0。结论江西省的东南部地区有福寿螺自然生长繁殖,并感染广州管圆线虫第Ⅲ期幼虫,而江西居民有吃福寿螺的习惯,应做好健教和监测,以控制广州管圆线虫病的发生和传播。

In order to investigate the distribution of natural epidemic foci of Angiostrongylus cantonesis（A.cantonesis） in Jiangxi,8 administrative villages were selected randomly from 8 counties/cities/districts according to the river system in Jiangxi,and the distribution and infection status of intermediate host,paratenic host and definitive host of A.cantonesis were surveyed.The positive rates of mouse stool with A.cantonesis in Huichang,Xingfeng,Ruijing,Zhanggong and Qingyuan were 3.23%,6.49%,2.30%,2.44%,2.99% and 1.43%,respectively.And there was no A.cantonesis in stool of mouse colleted from Taihe and Guixi.Apart from Jingxian,other 7 counties had Pomacea canaliculata breeding regions naturally.The infection rates of Pomacea canaliculata with A.cantonesis in Huichang,Xingfeng,Taihe,and Qianyuan were 15.52%,12.07%,1.87% and 2.59%,respectively.And there was no infected snail with A.cantonesis found in Zhanggong,Ruijin and Guixi.Land slugs collected from 6 counties were examined.Land slugs infected with A.cantonesis were found in 4 counties with the highest infection rate of 11.32% in Qingyuan.The positive rate of frogs with A.cantonesis ranged from 0% in Gruixi to 10.91% in Jingxian.It could be concluded that Pomacea canaliculata inhabit in southeast areas of Jiangxi and have been infected with the third stage larvae of A.cantonesis.As Jiangxi residents have the tradition of eating snail,health education and surveillance would play an important role in A.cantonensis control.