And of course you will probably get infected by an additional cold, since there remain more than 300 various cold infections. Yet you will never ever acquire the exact same cold infection that you had previously since you have actually established immunity to it.Parents have in the past had a lot of the rhinitis infections. Adults have actually developed immunity to the ones they have actually had. So there are not as many runny nose viruses around for parents to catch. That is why parents only get infected with a couple of colds annually and youngsters get 10-12 colds per year.