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A member asked:
How many % of sinus infections are caused by virus and how many by bacteria? is the common cold a sinus infection?
A doctor has provided 1 answer
Most viral: Studies have shown greater than 90% of "sinus" infections are viral. The common cold is viral. Symptoms lasting more tha 7-10 days or worsening symptoms after 5-7 days may have a higher chance of being bacterial rhinosinusitis.
Answered 2/8/2014
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