Missouri Reports Over 2,000 Cyclosporiasis Cases Amid Ongoing National Tracking
Missouri has reported over 2,000 cases of cyclosporiasis, a diarrheal illness caused by a parasite. While the number of new cases is slowing, health officials are monitoring the situation as symptoms can take weeks to appear. The Centers for Disease…
St. Louis, MO, August 24, 2026 —
Missouri has seen a significant increase in cyclosporiasis cases, with the state reporting over 2,000 instances of the parasitic diarrheal illness. While the rate of new infections appears to be decreasing, health officials are maintaining a watchful eye on the situation due to the potential for delayed symptom onset, which can take several weeks to manifest.
The Centers for Disease Control and Prevention (CDC) is actively monitoring cyclosporiasis cases across multiple states. Investigations into some outbreaks have identified contaminated iceberg lettuce as a contributing factor.
Cyclosporiasis is an intestinal illness caused by the microscopic parasite Cyclospora cayetanensis. People typically become infected by consuming food or water contaminated with the parasite. Symptoms often include watery diarrhea, loss of appetite, weight loss, cramping, bloating, and fatigue. Nausea, vomiting, and fever are also possible.
The incubation period for cyclosporiasis can range from a few days to over a week after exposure. Illness can last for several weeks or longer and may recur. According to health authorities, prompt medical attention is advised for individuals experiencing persistent gastrointestinal symptoms.
The specific sources of infection for all cases in Missouri have not been fully detailed, and ongoing investigations aim to identify any further contributing factors or potential links between outbreaks. Health departments are emphasizing food safety practices and encouraging consumers to report any concerns regarding food products.
Story summarized from the original created by Rob Edwards on www.stlpr.org, see more information here.
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