杀灭血吸虫病中间宿主螺蛳的方法可改变其孳生环境或用化学药剂,二者费用都很昂贵,后者对人及水生生物有害。埃及公共卫生研究所在埃及和地中海地区发现豚草属的一种野草Ambrosia maritima,其花和叶含有使螺蛳死亡的物质。有效成分为水溶性,易于提取。 The method of killing the intermediate host snail of schistosomiasis can change its breeding environment or use of chemical agents, both of which are expensive and are harmful to humans and aquatic organisms. The Egyptian Institute of Public Health found a wild grass, Ambrosia maritima, of the ragweed in Egypt and the Mediterranean whose flowers and leaves contain substances that kill the snails. The active ingredient is water-soluble and easy to extract.