广东省罗定市广州管圆线虫疫源地调查

Investigation on the Source of Angiostrongyliasis in Luoding City,Guangdong Province

目的了解广东山丘区广州管圆线虫疫源地的分布及宿主种类,为制定广东山丘区广州管圆线虫病防治策略提供科学依据。方法各种螺类均采用匀浆法把螺肉打碎,置室温下自然沉淀,取沉渣图片镜检。结果在褐云玛瑙螺、福寿螺和石螺体内发现广州管圆线虫,阳性率分别为13.21%(14/106)、2.00%(2/100)和1.43%(1/70);10只中华圆田螺未发现阳性。结论山丘区的罗定市为广州管圆线虫病疫源地,褐云玛瑙螺、福寿螺和石螺均可为广州管圆线虫的中间宿主。

Objective To investigate the prevalence and distribution of angiostrongyliasis in the mountain areas in Guangdong province ; to provide a scientific basis for working out the effective control strategies of angiostrongyliasis in this area. Methods Gastropods collected in these areas were broken by homogenization, and the samples were allowed to precipitate at room temperature The dregs were smeared onto microscopic slides and observed under a microscope. Results Angiostrongylus cantonensis was found in Ampullarium crosseana Hidalgo, Achatina fulica and other snails, and the positive rates for these three types of snails were 13.21% （14/106）,2.00%（2/100）and 1.43%（1/70）, respectively. No worm was found in 10 Cipangoludina chinensis. Conclusion Ampullarium crosseana Hidalgo, Achatina fulica and river snails inhabiting in the mountain areas of Luoding city are the intermediate host of A ngiostrongylus cantonensis.