And sure you will possibly cave in to another cold, because there remain 300 various runny nose viruses. Yet you will certainly never get the exact same cold virus that you had previously since you have established immunity to it.Parents have already had a lot of the runny nose infections. Grownups have actually developed immunity to the viruses they have actually had. So there are not as many cold viruses around for adults to become infected with. That is why grownups just get infected with a few colds annually whereas youngsters usually get 10-12 colds annually.