Cold, mainly divided into the common cold and influenza.

Cold, mainly divided into the common cold and influenza.
1, the common cold: It is the nose, nasopharynx, throat, such as acute upper respiratory tract inflammation, so commonly used in acute nasopharyngitis, acute pharyngitis, the diagnosis of acute tonsillitis and other terms, often collectively referred to as acute upper respiratory tract infection, referred to as "the flu . " This disease for clinical diseases, frequently-occurring disease, a higher rate of incidence. Can occur throughout the year, the most in winter and spring. Can occur at any age, with the highest incidence rates in children.常呈sporadic and even can cause pandemic.
2, influenza: a virus-induced acute respiratory infectious diseases. Mainly through direct contact with droplets spread of highly contagious and often cause large-scale or even world-wide pandemic.