Cyclosporiasis outbreak hits 21 Michigan counties

Key Points:

• The Michigan Department of Health and Human Services is investigating a large and growing outbreak of cyclosporiasis, a parasitic infection causing severe gastrointestinal symptoms, with over 225 cases reported across 21 counties and Detroit between June 22 and July 1.
• Cyclosporiasis is caused by the parasite Cyclospora cayetanensis, often linked to contaminated fresh produce imported from tropical regions; the exact source of the Michigan outbreak remains unknown as investigations continue with state and federal agencies.
• Symptoms typically appear 2 to 14 days after exposure and include watery, explosive diarrhea, abdominal cramps, nausea, and weight loss; untreated infections can last weeks, but the illness is treatable with antibiotics.
• Similar cases are being investigated in northwest Ohio, with 65 cases reported in Lucas County, though the CDC states there is currently no evidence linking Michigan and Ohio outbreaks to a common source.
• Health officials urge thorough washing of fruits and vegetables, proper food handling, and prompt medical evaluation for symptoms, emphasizing that previous outbreaks have been associated with contaminated produce and restaurant food.