devaldysag
By chance have you a while ago been down with acute rhinitis? Probably did you heal from the virus? Certainly you did! You can't cure a runny nose directly, but your system usually develops immunity to a specific cold infection within several weeks. We call that healed by your personal immune system!
Adults have currently had a lot of the rhinitis viruses. Adults have actually created resistance to the ones they have suffered from. So there are not lots of runny nose viruses existing for adults to become infected with. That is why adults only get infected with a couple of runny noses annually and youngsters acquire 10-12 runny noses each year.
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