You are already infected with a cold 2 to 3 days before symptoms begin.
There are more than 200 different viruses that can give you the common cold.
The common cold usually occurs during the fall and when cold weather begins in the winter months. This time period usually begins in late August or early September and remains high until March or April, when the chance of catching a cold becomes smaller.
Children usually have about 6 to 10 colds a year, but they can have as high as 12 colds a year due to close contact with each other in daycare centers and in schools. read more »