What does the flu mean?

Influenza is the abbreviation of influenza, which is an acute respiratory infectious disease caused by influenza virus.

The incubation period of people infected with influenza virus is usually 1-3 days, ranging from a few hours to four days.

The symptoms of influenza are usually more serious than the common cold, mainly manifested as high fever, chills, headache, dizziness, fatigue, loss of appetite, muscle aches and so on. The symptoms of upper respiratory tract are relatively mild or not obvious, and a few patients may have symptoms such as cough, sore throat, stuffy nose, sneezing, runny nose and hoarseness.

The prognosis of influenza is closely related to the immune function of the body and the virulence of the virus, and the prognosis of simple influenza without complications is better. If there are various complications, such as viral pneumonia or secondary bacterial pneumonia, the prognosis is poor and even the patient may die.

Clinical manifestations mainly include fatigue, cough, high fever, headache, muscle aches and other symptoms.

Influenza in China is mainly concentrated in winter and spring, and it is mainly spread by droplets. According to the difference between nuclear protein and matrix protein, influenza viruses have different classifications. There are four types: a, b, c and d.

Because most influenza viruses are RNA viruses, which are easy to mutate and highly contagious, it is difficult to treat with drugs. But influenza virus can be inactivated by alcohol, iodophor, etc. Or stay at 56℃ for 30 minutes.