Influenza (also known as flu) is a highly contagious virus disease that can lead to hard complications or death. The flu is more dangerous than any other acute respiratory viral infections (A.R.V.I.), but it has similar symptoms with them.
Influenza is defined as an acute respiratory viral disease with the drop mechanism of transmission, which is characterized by acute onset, mainly affecting the upper respiratory tract and general intoxication.
Is an infectious disease caused by an influenza virus. Usually, the virus is spread through the air from coughs or sneezes, through talks, and while shaking hands, kissing, through objects used by the patient ( handkerchief, towel, dishes, etc.).
With onset of the cold season the amount of ARVI, which takes the first place in structure of contagious diseases, is dramatically increase. Herewith the cases of flu happen in only 12-15%. In the epidemic season in short time period (4-6 weeks) 70-85% of population catches these diseases.