以下为句子列表:
英文: 7.% of the infected persons harbored simple Necator americanus and .7% simple Ancylostoma duodenale , as shown by hookworm larva cultivation. The mixed infection rate was .% ( N.a.∶ A.d . = . 7∶).
中文: 9例钩虫幼虫鉴定结果,单纯美洲钩虫感染者占7.%,单纯十二指肠钩虫感染者占.7%,两种钩虫混合感染者占 .%,N.a.∶A.d.=. 7∶。
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