Michigan's cyclosporiasis outbreak grows to more than 1,500 cases

Michigan health officials are grappling with a significant cyclosporiasis outbreak, with reported cases soaring to 1,562 as of July 10. The illness, caused by the parasite Cyclospora cayetanensis, has led to 44 hospitalizations since the outbreak was first identified in late June. The majority of cases are concentrated in Southeast Michigan, though the illness has now been confirmed in 40 counties across the state.

Monroe County has reported the highest number of cases at 215. This current outbreak far exceeds Michigan's average of about 50 cases per year. The Centers for Disease Control and Prevention (CDC) notes that at least 31 states have reported cases since early May, indicating a wider national concern. Symptoms of cyclosporiasis typically include frequent watery diarrhea, loss of appetite, bloating, nausea, and fatigue, though some individuals may also experience body aches and headaches.

While health officials are actively working to pinpoint the exact source of the outbreak, previous U.S. and Canadian outbreaks have been linked to contaminated produce such as bagged salad mixes, cilantro, basil, raspberries, snow peas, and scallions. In response to the current situation, Michigan health officials are advising restaurants and commercial kitchens in Southeast Michigan to exercise extra caution with fresh produce. They recommend thorough washing under running water and cooking produce when possible to mitigate risk. General prevention tips include washing all fruits and vegetables diligently, scrubbing firm produce, cutting away damaged areas, and refrigerating prepared items promptly.