经常看到不少孩子特别不适应气候骤变,在流感流行的季节反复感冒咳嗽。临床上把这些呼吸道反复感染的孩子叫作易感儿。如何确定孩子是易感儿呢?一般认为,3岁以下儿童一年之内发生上呼吸道感染7次、下呼吸道感染3次;3～6岁儿童发生上呼吸道感染6次、下呼吸道感染2次;学龄儿童发 Many children are often seen not particularly adapted to sudden changes in the climate, coughing repeatedly during the flu season. Clinically, these children with recurrent respiratory tract infections are called susceptible children. How to determine the child is susceptible children? It is generally believed that children under 3 years of age within one year of upper respiratory tract infection 7 times, lower respiratory tract infection 3 times; 3 to 6 years old children with upper respiratory tract infection 6 times, lower respiratory tract infection 2 times ; School-age children hair