所谓感冒实质上是一种上呼吸道的急性感染。全年均可发病,以冬春季节多发。多数由流感病毒引起,部分为溶血性链球菌、肺炎球菌、葡萄球菌、流感嗜血杆菌等细菌所致。细菌存在于自然环境中,在过度疲劳、受凉、淋雨等情况下,人的免疫功能和呼吸道局部的防御功能降低,这些病菌即会兴风作浪,在人的呼吸道迅速繁殖引起急性感染症状。 The so-called cold is essentially an upper respiratory tract infection. The disease can occur throughout the year, mainly in winter and spring seasons. Mostly caused by the influenza virus, some hemolytic streptococcus, pneumococcus, staphylococcus, Haemophilus influenzae and other bacteria caused. Bacteria are found in the natural environment. In the case of over-exhaustion, cold, rain and the like, the immune function of the human and the defensive function of the respiratory tract are reduced. These bacteria will make waves and cause rapid infection in the human respiratory tract.