Teesdale C H, Fahringer K, Chitsulo L
Trans R Soc Trop Med Hyg. 1985;79(3):369-73. doi: 10.1016/0035-9203(85)90384-0.
Variation in daily egg counts, and in counts for samples of the same stool, was investigated in children with Schistosoma mansoni and Ascaris lumbricoides infections, using a thin smear technique. The results indicated that counts vary according to the stool consistency; drier stools from the same person producing up to seven times greater counts than wet ones. The sensitivity of the technique was tested in schoolchildren living in an endemic S. mansoni area, and found to detect all infections with intensities of greater than 50 eggs per gram of stool, after examination of only one slide containing 40mg stool. The sensitivity varied with the intensity of infection. The relevance of these findings to diagnosis in field situations is discussed.
采用薄涂片技术，对曼氏血吸虫和蛔虫感染患儿的每日虫卵计数以及同一粪便样本的计数变化进行了研究。结果表明，计数因粪便稠度而异；同一个人的较干粪便产生的虫卵计数比较湿粪便多高达7倍。在曼氏血吸虫流行地区的学童中对该技术的敏感性进行了测试，发现仅检查一张含有40毫克粪便的玻片后，就能检测出所有每克粪便虫卵数大于50个的感染。敏感性随感染强度而变化。讨论了这些发现与现场诊断的相关性。
