Jonathan Derr, pictured with his mother, Jo Ann Simons, survived COVID-19. Having Down syndrome put Derr at high risk of serious illness. (Courtesy Jo Ann Simons) The Centers for Disease Control and Prevention's list of medical problems that increase risk from the coronavirus includes common conditions like cancer, heart disease and obesity — plus a recent addition you might not guess: Down syndrome. People with Down syndrome are prone to serious illness — or even death — if they contract COVID-19. "I said, 'Why me? Why do I have COVID?' " said Jonathan Derr, a Cape Cod grocery wor...