WebMD WebMD nearly 10% of American population sneezing WebMD allergic to cats WebMD WebMD WebMD www.webmd.com/allergies/guide/cat-allergies http://www.webmd.com/allergies/guide/cat-allergies webmd.com allergic to the protein itching and sneezing frenzy WebMD webmd.com WebMD cat allergies are twice as common as dog allergies WebMD WebMD allergic to cats Web MD: Cat Allergies WebMD allergic reactions WebMD article WebMD WebMD, WebMD: Cat Allergies Cat Allergies