我们于1984年8月在阜南县城郊区赵庄用直接涂片法、倒置沉淀法、醛醚离心沉淀法和改良加藤氏法在同一条件下检查居民的感染率,比较检验结果。材料与方法1、直接涂片法,先在载玻片中央滴加生理盐水1～2滴,用牙签挑取粪便少许,与生理盐水充分调和,均匀涂布,涂片厚薄以能透见报纸铅字为度。每份标本涂片三张,置于显微镜下观察虫卵。2、倒置沉淀法:取粪便约gl,置入青霉素小瓶内,加水调成均匀悬液,再通过60目/时的铜丝筛,过滤到另一青霉素 In August 1984, we used the direct smear method, inverted sedimentation method, aldehyde ether centrifugal precipitation method and modified Kats ’method to check the residents’ infection rate and compare the test results in the same conditions. Materials and methods 1, direct smear method, the first drop of saline in the middle of the slide 1 to 2 drops of toothpick pick a little, fully reconcile with saline, uniform coating, smear thickness to see the newspaper The typeface is degree Each specimen smear three, placed under a microscope to observe eggs. 2, the inverted precipitation method: take stool about gl, into the penicillin vial, add water into a uniform suspension, and then through the 60 mesh / hour copper wire mesh filter to another penicillin