And of course you will eventually succumb to one more cold, due to the fact that there are over 300 different runny nose viruses. Yet you will never ever acquire the very same cold infection that you had previously since you have established immunity to that particular cold virus.

Parents have in the past had a lot of the runny nose infections. Grownups have created resistance to the ones they have actually suffered from. So there are not as many runny nose viruses existing for grownups to become infected with. That is why grownups just acquire a few runny noses annually and kids acquire 10-12 colds each year.
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