为了解中小学生感染情况和做好防治工作，我们在楚雄城区两所中学、六所小学及学前班、幼儿园、采用驱虫净进行群体驱蛔防治观察，结果报告如下：三方法和对象采用陕西省汉江制药厂生产的复方甲苯咪哩，每隔半年进行一次，集体服药驱虫，每次每人服用剂量250mg，服药后连续观察 In order to understand the situation of primary and middle school students and prevent and control the disease, we investigated the prevention and treatment of collateral circulation in two middle schools, six primary schools, preschools and kindergartens in Chuxiong urban area. The results were reported as follows: The three methods and objects adopted Shaanxi Province Compound produced by Han River Pharmaceutical Factory toluene Mile miles, once every six months, the collective medication deworming, each taking a dose of 250mg, after taking continuous observation