Those advances make it easier for public health and the legal system to trace an outbreak of illness to its source, and to impose sanctions that encourage food processors to minimize risk.

这些进步使得公共健康和立法机构能够更容易地去追踪疫情暴发的源头，进而进行制裁以提升食物的加工处理从而降低风险。

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In July, stool samples confirmed E. coli as the cause of illness, though the exact food source of the bacterium was not confirmed.

今年7月，粪便样本证实病因是大肠杆菌，但病因菌确切的食物来源，还没有得到确认。

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Although pesticides are not a cause of foodborne illness, produce can be a source of food poisoning.

CNN: Food poisoning: What you need to know