And definitely you will eventually get infected by a different cold, since there exist 300 different runny nose viruses. Yet you will certainly unlikely get the same cold virus that you had before due to the fact that you have actually developed immunity to that particular cold virus.Grownups have currently had a lot of the runny nose infections. Parents have actually acquired immunity to the viruses they have suffered from. Therefore there are not as many cold viruses existing for grownups to acquire. That is why parents only acquire a couple of colds each year and children acquire a dozen runny noses each year.