And of course you will probably get one more runny nose virus, because there exist 300 different runny nose infections. But you will never ever get the very same runny nose infection that you had previously since you have actually created resistance to that virus.

Grownups have actually previously had a great deal of the cold infections. Adults have acquired immunity to the ones they have had. Therefore there are not quite as many cold viruses remaining for adults to acquire. That is why parents only acquire a couple of colds per year whereas children may get 10-12 colds each year.
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