格隆汇10月31日｜美国疾病控制与预防中心(CDC)周三表示，麦当劳的“足三两”汉堡和其他食物上的洋葱片可能是导致90人感染的大肠杆菌疫情爆发的源头。CDC表示，感染人数较此前的75人增至90人，27人住院治疗，目前已有1人死亡。美国食品和药物管理局(FDA)和麦当劳已经证实，泰勒农场是受影响地区的供应商，并已召回科罗拉多工厂生产的几批黄洋葱。上周日，麦当劳和科罗拉多州农业部也排除了牛肉饼是疫情来源的可能性。

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