按照全国人体寄生虫分布调查实施细则,我们于1990年6月至8月开展了人体寄生虫感染情况调查,以摸清我县寄生虫分布情况,为今后防治工作提供科学依据。一、调查方法以地理方位及经济层次分布,随机抽取安曲、瓦切为本次的调查点。经随机整群抽样,在这两个点的藏族牧民中抽300人以上(受检率不少于80％)。 According to the implementation details of the survey on the distribution of human parasites in the country, we conducted a survey on human parasitic infections in June-August 1990 to find out the distribution of parasites in our county and provide a scientific basis for prevention and control work in the future. First, the survey method to geographical location and economic distribution, random extraction of An Qu, Watts for the investigation point. After a random cluster sampling, more than 300 Tibetan herdsmen at these two sites were smoothed out (with a rate of not less than 80%).