近年来对毛细支气管炎的病原学,国内外均有报道,均认为引起本病的病毒,最常见者为呼吸道合胞病毒,少数病例亦可由腺病毒、副流感病毒、肠道病毒及流感病毒引起。国外自1961年起即陆续报道婴幼儿毛细支气管炎大多系由呼吸道合胞病毒所致。国内中国医学科学院儿科研究所,自1974年冬至1976年春对北京地区毛细支气管炎80例患儿的咽拭子标本进行了病毒分离工作,结果分离出合胞病毒12株,其中10例取了双 In recent years, the etiology of bronchiolitis has been reported both at home and abroad. The most common cause of this disease is respiratory syncytial virus. In a few cases, adenovirus, parainfluenza virus, enterovirus and influenza virus cause. Abroad since 1961 that is reported in succession mostly infant bronchiolitis is caused by respiratory syncytial virus. Domestic Institute of Pediatrics, Chinese Academy of Medical Sciences, from the winter of 1974 to the spring of 1976, the spring of Beijing in patients with bronchiolitis 80 cases of throat swab specimens were isolated from the virus, resulting in the isolation of 12 syncytial virus, of which 10 were taken double