And sure you will probably cave in to an additional cold virus, since there are more than 300 different cold infections. Yet you will unlikely acquire the same runny nose infection that you had before because you have actually developed immunity to it.

Grownups have previously had a great deal of the runny nose viruses. Adults have actually developed resistance to the colds they have actually suffered from. Therefore there are not quite as many runny nose viruses around for adults to acquire. That is why parents just get infected with a couple of colds annually and kids usually get 10-12 runny noses per year.
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