论文部分内容阅读
１９９８年春季对我市人群中肠道蠕虫感染情况进行了一次抽样调查，现将调查结果报告如下：１调查方法①选点各县、区根据本地的具体情况进行抽样选点。每县选３个有代表性的点，每点整群（每个年龄组）连片调查人数不少于５００人。②方法采用改良加藤氏法。所需的材料均...
In the spring of 1998, we carried out a sample survey on the intestinal helminth infection in our city. The survey results are reported as follows: 1 Survey Methods ①Selection points Counties and districts select sampling points according to local conditions. Each county selected 3 representative points, each point cluster (each age group) contiguous survey of not less than 500 people. ② method using improved Kats’ method. The required materials are ...