The Centers for Disease Control and Prevention (CDC) has issued a warning about a significant increase in cases of cyclosporiasis, a foodborne illness caused by the microscopic parasite Cyclospora cayetanensis. As of early July 2026, 86 individuals have been hospitalized due to this outbreak, with cases confirmed in 32 states, including a particularly severe situation in Michigan, where the number of cases has surpassed 1,500.
Cyclosporiasis is typically contracted by consuming contaminated food or water. Symptoms include watery diarrhea, stomach cramps, nausea, fatigue, and weight loss. The illness can be severe, especially for vulnerable populations such as the elderly and those with weakened immune systems.
The CDC is collaborating with state and local health departments to identify the source of the outbreak and prevent further spread. Consumers are advised to practice good hygiene, thoroughly wash fruits and vegetables, and ensure that food is cooked to appropriate temperatures. Healthcare providers are urged to consider cyclosporiasis in patients presenting with gastrointestinal symptoms and to report suspected cases to local health authorities.
The CDC continues to monitor the situation closely and will provide updates as more information becomes available.