Is a viral cold the same as influenza?

　　Influenza refers to the flu. Under normal circumstances, viral colds are not influenza. Detailed analysis is as follows:

　　The pathogens of viral colds are mainly other respiratory viruses, which are numerous and include, but are not limited to, respiratory syncytial virus, adenovirus, rhinovirus, etc. Colds caused by these viruses usually have mild symptoms, short disease course, and certain self-limiting characteristics. In contrast, influenza is caused by the influenza virus, which is highly contagious and has strong mutation capabilities, capable of causing seasonal or global influenza epidemics. Influenza viruses are mainly divided into type A, B, and C.

　　Symptoms of viral colds are usually mild, mainly manifesting as respiratory symptoms such as runny nose, sore throat, and fever, with relatively mild systemic symptoms. In contrast, influenza is characterized by severe systemic toxic symptoms and mild respiratory symptoms. Patients may experience high fever, general muscle aches, fatigue, headache, and other symptoms. In addition, influenza is more contagious, spreading through airborne droplets, and is most contagious during the early stage of illness, easily leading to widespread outbreaks.

　　During the high season for influenza, try to avoid going to crowded places to reduce the risk of viral infection.