本文作者对泰国中部地区一所小学的816名学生用直接涂片法检查粪便,发现有10.4%姜片虫卵阳性,其中男33名,女52名,年龄7～13岁。这些儿童均有生吃水生植物的习惯。将受治对象随机分为3组,每组28～29例采用不同剂量的吡喹酮午饭后一剂顿服疗法,3组剂量分别为15、25和40mg/kg。服药当日及次日收集全部粪便淘虫。治后14、28及56天用浓缩法检查粪便,每份2次,但有13名学生延至治后70天。治 The authors examined 816 students in a primary school in central Thailand by direct smear and found 10.4% of the eggs were positive for masseter, including 33 males and 52 females, aged 7 to 13 years. These children have the habit of eating raw aquatic plants. The subjects were randomly divided into three groups, each group of 28 to 29 patients with different doses of praziquantel after a dose of Dayton treatment, three doses were 15,25 and 40mg / kg. On the day of medication and the next day to collect all the faeces. Excrement was examined by concentration at 14, 28 and 56 days after treatment, two times each, but 13 students were delayed to 70 days after treatment. rule