Topic overview
In brief
- Michigan has reported over 11,000 cases of Cyclospora infections since early May 2026.
- The outbreak has been linked to iceberg lettuce sourced from central Mexico.
- The two deaths highlight the serious risks associated with foodborne illnesses.
Summary
In Michigan, a significant outbreak of Cyclospora infections has led to the deaths of two individuals, marking a troubling development in the state's ongoing health crisis. The Michigan Department of Health and Human Services reported that these deaths are the first associated with the current outbreak, which has affected over 11,000 residents since early May 2026. The outbreak has been linked to iceberg lettuce sourced from central Mexico, raising concerns about food safety and contamination. As of now, 193 people have been hospitalized due to severe cases of cyclosporiasis, a parasitic infection caused by Cyclospora cayetanensis.
The Centers for Disease Control and Prevention has confirmed over 6,700 cases of cyclosporiasis acquired within the United States during this outbreak. While some states are experiencing typical case counts for this time of year, others are seeing numbers that are significantly higher than normal. The symptoms of cyclosporiasis can range from mild to severe, with those most at risk being young children, older adults, and individuals with weakened immune systems. Symptoms include loss of appetite, fatigue, low-grade fever, vomiting, and diarrhea.