【并发症】肠出血和肠穿孔近年已见减少，胆道感染、胆囊穿孔、腮腺炎、中毒性脑病、伤寒杆菌脑膜炎都是少见的并发症。
O O O O O B-dis I-dis I-dis O B-dis I-dis I-dis O O O O O O O B-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis O B-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 O O O O O O