Article: Is it a cold or an infection?

First the person in the cube next to you starts sniffling. Then before you know it, you're hacking and decorating your desk with crumpled up tissues.

So how do you know if you've got a cold or a sinus infection?

The American Academy of Allergy, Asthma and Immunology says about 31 million Americans develop sinusitis or a sinus infection each year. Often misinterpreted as a cold, suffers can go on for weeks waiting for cold symptoms to subside.

"It can really be hard to tell the difference," says Helen Nguyen, St. Joseph asthma and allergy specialist. "I've seen some people who've had a sinus infection for a whole year before coming in to see

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