The cost of this disease is great - statistics show asthma to be the third-ranking cause of hospitalization among children under 15 and is among the leading causes of school absenteeism.

• 哮喘导致的损失是极大的，统计表明哮喘是致使15岁以下儿童住院的第三大疾病，同是也是导致儿童缺课的首要疾患。