The UV treatment reduced populations of E. coli and Listeria innocua by more than 99 percent without changing the liquid’s flavor.

紫外线处理使大肠杆菌和英诺克李斯特菌的数量减少99%以上，而不会改变液体的口味。

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Listeria is rare but more deadly than well-known pathogens like salmonella and E. coli.

李氏杆菌虽不常见，但其致命毒性超过诸如沙门氏菌和大肠杆菌等著名的病原体。

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CDC officials have said the symptoms of listeria can take up to two months to show up and that they expect more illnesses through October.

疾控预防中心(CDC)的人士指出，李氏杆菌的症状最长可隐匿两个月才显示，十月期间还会有更多的病例。

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