Every year, the flu becomes more and more dangerous, causing serious complications, including on the nervous system.
The first signs of the flu are as follows: sudden heaviness in the head and decreased performance. Then the body temperature rises, itching in the eyes occurs, the nose is stuffy, chills and severe weakness appear.
If you study the proposed guide in detail, you can easily cope with the flu in 1-2 days, and also help your friends and family cope with it.