传染性单核细胞增多症、感染性心内膜炎，以及病程迁延的普通病毒感染性疾病、肝炎、真菌病等也是儿童发热待查的常见病因。
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 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 O B-dis I-dis O B-dis I-dis I-dis O O O O O O O O O O O O O O O