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Your nose is stuffy and you have pressure in your face. You have a sinus infection, but can you pass it on to someone else?
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What causes the common cold? Why isn't there a vaccine to prevent it? Can a chill cause a cold? WebMD answers frequently asked questions about the common cold.
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Learn more from WebMD about the flu, including causes, symptoms, types, risk factors, treatment, and prevention.
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Learn more from WebMD about children and the flu - symptoms to look for, treatment, prevention, and when to seek medical care.
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