Lyme disease has reached epidemic proportions, and Cape Cod and the Islands represent a major epicenter of the disease. Between 2010 and 2014, Chilmark and Nantucket had the highest number of cases of Lyme disease per capita of anywhere in the state. Roughly 300,000 Americans are diagnosed with Lyme disease each year, transmitted through the bite of an infected deer tick. Doctors are grappling with a growing number of cases of Lyme. They're also contending with a disturbing development -- after