MADISON — Wisconsin health officials are tracking a rising number of cyclosporiasis infections this summer. As of July 15, the Wisconsin Department of Health Services (DHS) has recorded 61 confirmed cases statewide, and public health investigators say 11 of those were acquired within the United States.
What this means for residents
The majority of the reported cases are linked to travel outside the country, but the presence of locally acquired infections indicates a domestic source has affected some people. State health authorities are still working to identify the food or supply chain responsible for the in-state cases.
Officials urge consumers and food-service workers to take precautions when handling fresh produce to reduce risk of infection.
- Wash hands thoroughly before and after preparing food.
- Rinse fruits and vegetables under running water; use a produce brush for firmer items.
- Cut away damaged or bruised areas before eating.
- Refrigerate prepared or cut produce promptly — within two hours — to limit bacterial growth.
- Cook produce when appropriate.
State and regional context
The Wisconsin DHS provided the case numbers and prevention guidance. The agency has not identified a specific food item responsible for the 11 cases acquired domestically. Investigators typically rely on patient interviews, laboratory testing and traceback of foods to find common sources.
Nearby, Michigan has seen a much larger outbreak this season: that state has reported more than 4,000 cases of cyclosporiasis so far, creating heightened regional concern among public-health officials.
| Jurisdiction | Reported cases | Notes |
|---|---|---|
| Wisconsin | 61 | 11 likely acquired in U.S.; most linked to international travel |
| Michigan | 4,000+ | Large regional outbreak |
Symptoms, testing and when to seek care
Cyclospora is a microscopic parasite that commonly causes prolonged diarrhea, stomach cramps, nausea and fatigue. Symptoms may appear days to weeks after exposure. Health-care providers can order testing to confirm cyclosporiasis. People with severe or persistent diarrhea, dehydration, or other worrying symptoms should contact their medical provider.
The Wisconsin DHS is coordinating the investigation and sharing guidance to reduce further spread. The agency’s prevention recommendations focus on careful produce handling and prompt refrigeration of prepared foods.
News outlets including WMTV reported the DHS numbers and guidance. Residents who handle food for others, eat fresh produce often, or have recently traveled internationally should be especially attentive to these precautions.
Brooke Steiner, Wisconsin Correspondent
