流感是流行性感冒的简称。流感和普通感冒的病原及流行特征是不同的。普通感冒可以由于不同的病原引起,因此一年四季均可发生。流感是由流感病毒引起的急性呼吸道传染病,主要通过空气飞沫经呼吸道传播。发病没有诱因,一年中不会多次发病。它最大的特点是发病快、传染性强、发病 Flu is short for flu. Flu and the common cold of the pathogenic and epidemic characteristics are different. The common cold can be caused by different pathogens, so it can occur throughout the year. Flu is an acute respiratory infection caused by the flu virus, which is transmitted through the respiratory tract mainly through air droplets. There is no incentive to onset, not many times a year disease. It is characterized by the most rapid onset, contagious, disease