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Updated on: July 10, 2026 / 11:49 AM EDT
/ CBS Detroit
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Michigan health officials say the state's cyclosporiasis outbreak has grown to more than 1,500 cases. As of July 10, the Michigan Department of Health and Human Services has received 1,562 reports since June 22. Health officials say 44 people have been hospitalized. Cyclospora cayetanensis is a parasite that causes the diarrheal illness cyclosporiasis. The Centers for Disease Control and Prevention says the most common symptoms associated with the illness are frequent watery diarrhea, loss of appetite, bloating, nausea and fatigue. Some people may also experience body aches, headache or vomiting. The outbreak of the gastrointestinal illness was first reported in late June, after the Monroe County Health Department said it was investigating a cluster of cases. Most of the cases have been in Southeast Michigan, with multiple cases reported in Jackson, Lenawee, Livingston, Oakland, Shiawassee, Washtenaw and Wayne counties. As of July 9, cases have been confirmed in 40 counties, with Monroe County reporting the most, at 215. Michigan averages about 50 cases per year, according to MDHHS. According to the CDC, at least 31 states have reported cases since early May, including Illinois, New York, and Texas.
