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Likely have you a while ago been down with a runny nose? Probably did you do away with the virus? Obviously you did! You can't cure an acute rhinitis directly, yet your system generally develops resistance to any type of cold infection within a few weeks. That is called treated by your own immune response!

Adults have previously had a lot of the cold infections. Grownups have actually acquired immunity to the colds they have actually suffered from. So there are not quite as many cold viruses remaining for parents to become infected with. That is why adults only acquire a couple of colds each year and children succumb to a dozen runny noses per year.
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