近年来中小学生染虱情况较为普遍。目前灭虱药物及方法颇不一致。有的文献报导用药一次留药三天灭虱牢100％。也有报导用药一次留药三天,灭虱率80％左右。为了进一步验证灭虱药的疗效和选择适当的药物浓度,笔者于1988年5月下旬在易县北奇乡、卓家庄两所小学应用“护发灭虱灵”进行三种不同浓度的疗效观察,现将结果报 In recent years, primary and secondary school students infected with lice situation is more common. The current anti-lice drugs and methods are quite inconsistent. Some reports of drug use drug three days to stay lice 100%. Drugs have also been reported once a day for three days, off rate of about 80% of lice. In order to further verify the efficacy of anti-lice drugs and select the appropriate concentration of drugs, the author in late May 1988 in Yi County, North Qi Township, Zhuojiazhuang two primary schools to use “hair care off lice spirit” for three different concentrations of efficacy Observation, the result will now be reported