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为探讨氯硝柳胺缓释剂在杀灭血吸虫尾蚴的效果，用氯硝柳胺与红壤、粘合剂和树脂制成缓释球在血吸虫病易感地带进行连续两年的杀蚴试验。结果显示,投缓释球前两年水体小白鼠感染率均为100．0％；平均虫荷分别为9．39条／鼠和7．09条／鼠。投缓释球后30天分别为4．76％和15．63％；平均虫荷分别为0．10和0．91。表明氯硝物胺缓释球能有效地杀死水体中的尾蚴。
In order to investigate the effect of niclosamide sustained-release agent on killing Schistosoma japonicum cercariae, a sustained-release ball made of niclosamide, red soil, binder and resin was used to kill the larvae in the susceptible zone of schistosomiasis for two years. The results showed that the infection rate of mice in water two years before release sustained release was 100.0%, and the average insect load was 9.39 / mouse and 7.09 / mouse respectively. After the release of the ball 30 days were 4.76% and 15.63% respectively; the average insect load were 0.10 and 0.91. Show that nitrite amine sustained-release ball can effectively kill cercariae in water.