Colds are the most common illness that people get. Colds may be caused by over 200 types of viruses. The most common of these are rhinoviruses ("rhino" refers to the nose).
This is a group of viruses that infect your respiratory tract. Most people will be infected with a coronovirus at least once in their life. Usually, symptoms are mild or moderate, and may seem like those of a common cold. But some coronaviruses can be very dangerous.
