【摘要】 目的　探讨在改进取样方法后 ,改良加藤法检测日本血吸虫感染敏感度的变化规律。方法　选取某日本血吸虫病流行区的某村庄为研究对象 ,收集居民量大于 5 0 g的新鲜成型粪便 ,按常规方法制作 2张涂片 ,同时取粪便头部和 (或 )外层的样本制作 8张涂片。结果　随着涂片张数的增加 ,检出率呈逐渐上升 ;在低度感染的人群中 ,改进取样方法后的 2张涂片的平均敏感度比常规涂片高出约 2 5 %。结论　改进粪便取样方法可提高改良加藤检出低度感染人群的敏感度更多还原

【Abstract】 Objective To study the rule of sensitivity change by improving sampling feces in Kato Katz method for diagnosing Schistosoma japonicum infection in the field.Methods Stools of a population in an endemic area were collected.Two slides made according to standard Kato Katz method and another 8 slides sampled from the head and/or outside surface of the stools were examined and compared.Results The positive prevalence increased with the number of slides examined.In the light infected population,the sensitivity of 2 slides increased from 47.7% to 72.3% after sampling from the head and/or outside surface of stool istead of standard Kato Katz method.Conclusion Sampling from the head and/or outside surface of the stool can increase the sensitivity of Kato Katz method in light infection population.更多还原