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作者前已报告,曾在菲律宾莱特流行区对小学儿童用粪检法进行调查,结果一次定量厚涂片检查的敏感性很低,约49.5%的儿童血清学试验阳性而一次粪检阴性。本研究比较了粪检(汞碘-甲醛浓集法MFCT)和酶联免疫吸附试验(ELISA)的结果。选择萨尔瓦多小学的学生,作重复的血清学和粪便定量检查的纵向调查。共调查371名学生,筛选出MFCT和ELISA双阴性244名,作转化追踪调查。自1979年起追踪了3年。结果:1.MFCT和ELISA的转阳率
The authors have previously reported that surveys of primary feces in females in the endemic area of the Philippines have resulted in a low sensitivity of a quantitative thick smear test. About 49.5% of children have a positive serological test and a negative fecal test. This study compared the results of stool tests (mercury-iodine-formaldehyde concentration method MFCT) and enzyme-linked immunosorbent assay (ELISA). Select El Salvador primary school students for longitudinal surveys of repeated serology and quantitative fecal examinations. A total of 371 students were enrolled in this study, 244 of whom were double-negative for MFCT and ELISA were screened for follow-up investigation. Tracked for 3 years since 1979. Results: 1. The positive rates of MFCT and ELISA