By Andi Anderson
The Michigan Department of Health and Human Services (MDHHS) is urging residents and food service operators to take additional precautions as cyclosporiasis cases continue to rise across the state. As of July 4, 2026, Michigan reported 572 cases, with the highest concentrations in southeast counties. Officials are investigating the outbreak, but no specific produce source has been identified.
Cyclosporiasis is caused by the Cyclospora parasite and commonly leads to watery diarrhea, stomach discomfort, and dehydration. Symptoms typically appear about a week after exposure and can last for several weeks if untreated. Young children, older adults, and individuals with weakened immune systems face a higher risk of severe dehydration.
Past outbreaks have been linked to foods such as bagged salad mixes, cilantro, basil, raspberries, snow peas, and green onions. To reduce the risk of infection, health officials recommend thoroughly washing fresh produce and cooking it whenever possible, as heating food to 158°F (70°C) or higher can kill the parasite.
MDHHS also reminds consumers and food handlers to follow basic food safety practices, including washing hands, sanitizing food preparation surfaces and utensils, and properly refrigerating fruits and vegetables.
Anyone experiencing persistent diarrhea or other gastrointestinal symptoms should contact a healthcare provider. Treatment generally includes antibiotics, adequate rest, and maintaining proper hydration.
Photo Credit: gettyimages-richlegg
Categories: Michigan, General