The common cold is one of the most frequent infections. Most people can expect to have two to four colds each year. It is usually a mild illness lasting between two and seven days. Viruses cause the common cold and can you believe that over 200 different viruses can cause colds! The most common cold viruses are the rhinoviruses and corona viruses. The common cold is a viral infection of the lining (mucous membrane) of the upper respiratory tract including the nose, pharynx, throat and the tubes leading to the lungs.
The symptoms of a cold:
