People have been catching colds since the beginning of time — and for just as long, we've been trying to cure them. In spite of our best efforts, the common cold remains one of the most frequently acquired illnesses in the world.

If you're like most adults, you can expect to catch a cold two to four times each year. With each infection, you'll likely spend around eight to 10 days coughing, sniffling, sneezing and generally feeling miserable.

Colds occur when one of over 20 ...

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