近年来,愈来愈多的临床病例和流行病学资料已证实蓝氏贾第鞭毛虫病是人类的重要致病寄生虫之一。据国外报道,在欧美不少国家曾多次发生蓝氏贾第鞭毛虫病流行。而我国的流行情况尚未清楚,据各地资料统计,蓝氏贾第鞭毛虫感染比较悬殊,在O.16～30.O％之间。我地区以往无报告。为此,我们于1988年lO月～1989年5月组织专业人员对田阳和凌云两县部分农村和小学生进行随机整群抽样调查,现将调查结果报告如下: In recent years, more and more clinical cases and epidemiological data have confirmed that Giardia lamblia is one of the important pathogenic parasites in humans. According to foreign reports, many countries in Europe and the United States have repeatedly led to the prevalence of Giardia lamblia. The epidemic situation in our country is not yet clear, according to statistics from all over the world, Giardia lamblia infection more disproportion between O.16 ~ 30.O%. No reports in the past in my region. To this end, we in 1988 lO months ~ May 1989 organized professionals to Tian Yang and Lingyun counties in rural areas and primary school students random cluster sampling survey, the findings are reported as follows: