And of course you will eventually succumb to one more runny nose virus, because there remain more than several hundred different runny nose viruses. However you will certainly never acquire the same cold virus that you had in the past because you have established resistance to that particular virus.

Parents have actually in the past had a lot of the runny nose infections. Grownups have actually developed immunity to the ones they have actually suffered from. So there are not so many runny nose viruses around for parents to become infected with. That is why parents just get a few colds annually and kids may get 10-12 colds per year.
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