Infection: Diarrhoea is a symptom of infections caused by a host of bacterial, viral and parasitic organisms, most of which are spread by faeces-contaminated water.

感染：腹泻是由许多细菌、病毒和寄生虫引起的感染症状，其中多数是由粪便污染的水源传播的。

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Reducing the body's ability to fight disease allows infection by a host of pathogens.

身体抵抗疾病的能力降低，就很容易受到大量病菌的感染。

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Skalka speculates that the sequences her team and others have found might protect the host from infection.

斯加尔卡推测她和其他的小组所发现的排序可能保护了宿主不受感染。

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MalariaControl.net can handle a lot of different sorts of variable, from the changing density of parasites within a human host as an infection progresses to the sort of treatment available in different places around the continent.

ECONOMIST: Linking up computers to defeat malaria

Two weeks ago a host of UK-based news publications spread the laughable argument that since Facebook use and syphilis infection rates are correlated, it somehow implies causation, too.

FORBES: The Only STD On Facebook Is A Computer Virus