The source of exposure for the initial case is still under investigation, with exposure to infected poultry or an environment contaminated by their faeces considered the most plausible source.

该最初病例的接触源仍在调查之中，接触受感染的家禽或受其粪便污染的环境被认为似乎是最合理的接触源。

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Conclusion Contaminated wound infection rate is related to the degree of soft tissue injury, but also to debridement of the environment and debridement is regular or not.

结论污染伤口感染率的高低除与软组织损伤程度有关外，还与清创的环境和清创是否正规、彻底有关。

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A report by the UN Environment Programme said oil spills had contaminated land, sea and air to such an extent that it seriously threatened public health in some areas.

一份联合国环境规划署的报告称，石油泄漏严重污染了土地，海洋和空气，在某些地区甚至威胁到公众健康。

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It is probable that it has an animal source, but whether it spreads from contaminated food or something else in the environment is unknown.

BBC: Threat from novel coronavirus 'remains low'

The bacteria exist everywhere in the environment but are commonly swallowed in contaminated food.

BBC: E.coli nursery gets all clear

The E.coli bacteria exist everywhere in the environment but are commonly ingested by contaminated food.

BBC: Two more in nursery E.coli outbreak