Two people have died in the cyclospora outbreak in Michigan, state health officials announced Monday, the first deaths confirmed in the U.S. related to the microscopic parasite. The Michigan Department of Health and Human Services said both people had underlying health conditions that may have been impacted by the intestinal illness and dehydration. Many cases are never linked to a specific food or other source and, for years, few U.S. cyclospora outbreaks were reported. Since May 1, the CDC has received reports of more than 4,100 confirmed cases and is investigating more than 7,400 other likely cases across 41 states. Federal health officials have identified lettuce from Mexico served at Taco Bell locations in nine states as a source of the widespread outbreak.