毛细支气管炎(毛支炎)是婴幼儿时期常见的下呼吸道感染性疾病。2-6个月的婴儿多发,严重者可发生心衰或呼衰,50％-70％可发生反复喘息,日后部分转为儿童哮喘。毛支炎发病的免疫机理十分复杂,关于IL-5、总IgE,尤其 IL-12在毛支炎中的变化及两种病毒感染对三种介质的影响报道较少。为此作如下研究。 Bronchiolitis (bronchiolitis) is a common lower respiratory tract infection in infancy. Multiple infants aged 2-6 months, severe heart failure or respiratory failure can occur, 50% -70% recurrent wheezing, the future part of the children into asthma. The pathogenesis of hairy mycoplasma is very complex immune mechanism, on the IL-5, total IgE, especially IL-12 in hairy mycitis changes and two kinds of virus infection on the impact of the three media reports less. To do this study as follows.