在牧场中喂饲未煮熟的厨房废肉是小猪群的一个传染来源。

Feeding of uncooked table scraps on the farm is a source of infection in small herds.

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前言： 目的：对深圳市某一霍乱疫点进行流行病学调查和传染来源追踪。

Objective:To make an epidemiologic investigation and look for infection sources.

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从寄生虫学、昆虫学和社会因素的调查结果表明，输入性疟疾是引起本次暴发流行的传染来源。

The results of investigation on parasitology, entomology and social factors showed that imported malaria is the infection source of the outbreak.

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