呼吸道感染性疾病在儿科发病占首位，早期病源诊断、合理使用抗生素为儿科医生所关注。为了使临床医生能根据临床症状、体征及简便的实验室检查来初步判定病毒感染与否，避免滥用抗生素，对我院1994年11月～1997年2月收治的下呼吸道感染病人104例分析如下。1资料和方法1．1一般 Respiratory infectious diseases in the pediatric incidence of the first, early diagnosis of disease, the rational use of antibiotics for pediatricians concerned. In order to enable clinicians to initially determine whether the virus is infected or not according to clinical symptoms and signs and simple laboratory tests and to avoid abusing antibiotics, 104 cases of patients with lower respiratory tract infection admitted to our hospital from November 1994 to February 1997 are analyzed as follows . 1 Materials and Methods 1.1 General