The common cold is a viral upper respiratory tract infection. This contagious illness can be caused by many different types of viruses, and the body can never build up resistance to all of them. For this reason, colds are a frequent and recurring problem. In fact kindergarten children average 12 colds per year, while adolescents and adults have around seven colds per year. Going out into the cold weather is not how one contracts a cold nor does it have an effect on the spread of a cold. Antibiotics do not cure or shorten the common cold. While many doctors will tell you it is “normal” to have 8 or more colds per year, in fact it is surely a sign of an unbalanced immune system. This condition is so common that it is considered normal. This author has not had a cold for several years.