为了了解我县小学生蛔虫感染状况，我站于1988和1989年用直接涂片法和盐水漂浮法对建平县城乡两所小学进行蛔虫感染的调查。结果1988年城镇小学和乡建平镇小学学生的蛔虫感染率分别为52．2％（95／182）和70％（244／395），1989年上述两校学生的蛔虫感染率分别为39．4％（86／ In order to understand the primary school students in our county roundworm infection, I stood in 1988 and 1989 with direct smear and saline floating method Jianping County primary and secondary schools asymptomatic infection investigation. Results The prevalence of roundworms in urban elementary schools and townships in 1988 was 52.2% (95/182) and 70% (244/395) respectively. In 1989, the prevalence of roundworms in the two primary schools was 39. 4% (86 /