ACtually if you look at a geographic concentration, it's most prevalent in the northern mid-western states, MN and WI, and then along the Northern Atlantic Coastal states, CT, PA, MD, NY, NH, DE. NH, DE, and CT have the highest prevalence of all states, wit h 46-56 cases reported per 100,000 people. VA only has about 4.7 cases per 100,000 people. Not saying you shouldn't worry about it, but it's pretty rare in most states. In OH it's about 4 people in 1,000,000 that will have it each year!!!!!