1.感染是诱发儿童HUS的首要因素，根据诱因可以志贺样毒素相关HUS和非志贺样毒素相关HUS。
O O O O O O O O O B-dis I-dis I-dis O O O O O O O O O O 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 I-dis I-dis I-dis I-dis I-dis I-dis O