玲玲今年3岁了,可不知为什么特别容易感冒,尤其在秋冬季节。这不,前两天玲玲又感冒了。先是流鼻涕,后来就发热、咳嗽。经过打针、吃药,折腾了十多天才逐渐好起来。玲玲妈为此很忧虑,为什么玲玲这么容易感冒咳嗽呢? 其实,玲玲的这种情况叫小儿反复呼吸道感染,与孩子的免疫功能关系较大,也和孩子的体质有关。我们知道,免疫主要有两类:一类是 Lingling 3 years old this year, I do not know why it is particularly vulnerable to cold, especially in autumn and winter. This is not the first two days Lingling caught a cold again. First runny nose, then fever, cough. After injections, medication, toss more than a dozen days before getting better. Lingling mother is very worried about this, why Lingling so easy to have a cold cough? In fact, this situation is called Lingling repeated respiratory infections in children, and the child’s immune function, but also related to the child’s physique. We know that there are two main types of immunity: one is