小儿容易得支气管炎,特别是在秋冬季节。这是因为小儿支气管粘膜娇嫩,又富有血管,容易受细菌或病毒感染。同时,小儿血液中缺乏免疫球蛋A(IgA),对病毒和细菌的抵抗力差。少数小儿,家族中有哮喘病史,可受遗传因素影响而发生支气管哮喘。那些体弱、过敏以及有慢性鼻窦炎的小儿更容易发病,每当气候变化,这些小儿往往首先发病。有的儿童一年中要发病数次,直到入学以后才渐渐好转。小儿反复发生文气管炎或哮喘,常使家长担忧、苦恼。本病没有特效的预防药,但如能做到以 Pediatric bronchitis is easy, especially in autumn and winter. This is because pediatric bronchial mucosal delicate, but also rich in blood vessels, susceptible to bacterial or viral infection. At the same time, the lack of immune globulin A (IgA) in children’s blood, poor resistance to viruses and bacteria. A small number of children, the family history of asthma, genetic factors may be affected by the occurrence of bronchial asthma. Children who are weak, allergic and have chronic sinusitis are more susceptible to the disease and often develop the disease most of the time when the climate is changing. Some children get sick several times a year and only get better after entering school. Children with recurrent bronchitis or asthma, parents often worry, distressed. The disease is no effective preventive medicine, but if done