According to the American College of Allergy, Asthma and Immunology, around 31 million Americans are affected each year by sinus infections. Our team from AFC Urgent Care Cleveland wants you to know symptoms to watch out for when it comes to a sinus infection, as well as how you can prevent one from happening in the first place. What Is a Sinus Infection? When a sinus infection occurs, it means that the lining of the ...