哮吼是儿童期常见疾病 ,且病毒性哮吼是6个月～6岁儿童气道阻塞最常见的征候 ,也是4岁以下小儿住院的一个原因。研究结果表明,1 5 %～6 %的哮吼患儿需要住院。在美国 ,因哮吼住院的年费用估计为5600万美元。实际上 ,儿童中15 %的哮吼起因于呼吸道感染 ,1%～5 %的2岁儿童因哮吼 Civet roar is a common childhood disease, and viral crouping is the most common sign of airway obstruction in children 6 months to 6 years of age, and is one of the reasons children under 4 years of age are hospitalized. The results show that 15% to 6% of children with croak need to be hospitalized. In the United States, the annual cost of hospitalizations for crouping is estimated at $ 56 million. In fact, 15% of children’s croaks are caused by respiratory infections and 1% -5% of 2-year-olds are clumsy