How long are you contagious when you have a sinus infection?
How long are you contagious when you have a sinus infection? A sinus infection caused by a viral infection lasts about seven to 10 days, meaning you'll be contagious with the virus for up to two weeks. If your symptoms last more than 10 days, or if they subside after a week then return again a few days later, you likely have a bacterial sinus infection that cannot be spread. Can you catch a sinus infection from another person? If you are experiencing a viral sinus infection, you can't spread the infection to others, but you can pass along the...