Frequently Asked Questions

Is a sinus infection contagious?

A sinus infection (sinusitis) is swelling in the lining of your sinuses — hollow spaces in the bones of your skull. It’s usually caused by a cold or other virus but can also be caused by allergies or bacteria.  If your sinus infection is from a cold virus , you can spread it through droplets in the air from your sneezes, coughs, or breathing, or if another person touches a surface you’ve touched.  That person may get a cold or other respiratory symptoms but may not necessarily develop a sinus infection. If your sinus infection is due to bacteria or allergies, it’s usually not contagious. 

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