方法随机抽样采集城乡幼儿新鲜粪便，用直接涂片法和饱和盐水浮聚法检查虫卵。

Methods Faecal samples were randomly collected from infantsw and helminth eggs were detected.

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方法随机抽样采集城乡幼儿新鲜粪便，用直接涂片法和饱和盐水浮聚法检查虫卵。

Methods Faecal samples were randomly collected from infantsw and helminth eggs were detected.

youdao