调查人员需要继续寻找致命性大肠杆菌的病源。
Investigators need to find the source of the deadly E. coli.
最近，在德国以及周围地区致命性大肠杆菌的爆发使人们更关心“有机食品更健康更安全”的观点是否合理。
The recent fatal E. coli outbreak centred on Germany has focused attention on the validity of the claims that organic food is healthier and safer.
周一，德国有关部门继续追踪此次爆发的致命性大肠杆菌疫情的源头。此前的测试无法确定德国北部一个种植豆芽的农场就是疫情爆发的源头。
German authorities were still hunting on Monday for the origin of the deadly Escherichia coli outbreak after early tests failed to confirm that a bean-sprout farm in northern Germany was the source.
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