Cold is a very common disease of ours. You can't find people who have never had a cold in their life. The common cold virus is one of the most common diseases in humans. Older people are infected with the flu virus 2 to 3 times a year and children 6 to 12 times a year. In winter, its incidence increases a lot. Sore throat , stuffy nose , runny nose , fever. Fields especially headaches , muscle aches , loss of appetite etc. Duration is seven to ten days. Fields can typically be as high as three weeks. There are more than 200 viruses that are responsible for cold-like infections , one of which is the rhinovirus. Rhinovirus is responsible for more than 50% of cold infections. These cold virus particles accumulate inside our nose from contaminated fingers or contaminated air. A very small number of virus particles (1-30) are sufficient for infection. The virus particles then enter the adenoid area inside the nose on their own. The virus particles attach to the receptor ( ICAM 1) located on the surface of the nasal cells . This receptor virus attaches to the part of the surface called the docking port. Once attached to the receptor, the virus begins to infect a cell. Infected cells then begin to produce new virus particles. Then the infected cells die. In this way the virus infects new cells and new virus particles are produced. This process continues and as a result we get colds.