Parasite Illness Causing Severe Diarrhea Hits Indiana, Kentucky, Ohio

At least 18 states have reported cases.

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(Nationwide) - Hundreds of cases of cyclosporiasis have been reported throughout the United States. 

Cyclosporiasis is caused by a microscopic parasite, which infects the small intestine. The parasite spreads primarily through ingestion of food or water contaminated with feces containing cyclospora oocysts. 

Historically, outbreaks in the U.S. have been linked to fresh produce such as leafy greens, herbs (cilantro, basil), berries (raspberries), mesclun lettuce, and bagged salad mixes. The current outbreak has not yet been traced to a single food source, and investigations are ongoing.

Currently, at least 18 states - including Indiana, Kentucky and Ohio have reported cases. 

Symptoms typically appear 2–14 days after exposure and can last for several days to weeks, sometimes recurring. Common symptoms include:

• Watery or “explosive” diarrhea
• Abdominal cramps and bloating
• Nausea and vomiting
• Fatigue and loss of appetite
• Weight loss and low-grade fever
• Increased gas

The recommended treatment is the antibiotic combination trimethoprim-sulfamethoxazole.

While no method completely eliminates the risk, the CDC and health experts recommend:

• Washing hands thoroughly with soap and water before handling food
• Washing all fruits and vegetables under running water; scrubbing firm produce
• Refrigerating peeled, cut, or cooked produce promptly
• Avoiding cross-contamination between raw produce and raw meat or seafood
• Cooking produce when possible, as heat inactivates Cyclospora