无典型脓血便者，特别是婴幼儿菌痢需与致病性大肠埃希菌肠炎、病毒性肠炎、空肠弯曲菌肠炎鉴别。
O O O B-sym I-sym I-sym O O O O O B-dis I-dis I-dis I-dis I-dis O O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis I-dis I-dis O O O