CDC is working with state and local health officials, the Food and Drug Administration (FDA), the Department of Agriculture (USDA), and the restaurant chain to determine what food caused the outbreak.

• CDC与州卫生官员、地方卫生官员，食品药品管理局（FDA），农业部（USDA）和餐厅连锁店一起努力，共同决定何种食物引起此次暴发。