Cyclosporiasis is a foodborne illness caused by the microscopic parasite Cyclospora cayetanensis. Cases have been increasing across the United States, with infections reported in multiple states, including Michigan. Many outbreaks have been linked to contaminated fresh produce, making food safety especially important during the summer months.
People become infected by eating contaminated fresh produce or drinking contaminated water. Common sources include leafy greens, herbs, berries, and other fruits and vegetables that have not been properly washed or handled. Cyclosporiasis is not spread directly from person to person.
Common Symptoms
- Prolonged watery diarrhea
- Stomach cramps
- Nausea
- Bloating
- Fatigue
- Loss of appetite
- Weight loss
- Low-grade fever
Symptoms can last for weeks if left untreated and may come and go over time.
How Cyclosporiasis May Affect Eye Health
Cyclosporiasis primarily affects the digestive system and does not typically infect the eyes. However, severe diarrhea can lead to dehydration, which may reduce tear production and cause dry, irritated eyes, blurred vision, or a gritty sensation.
Prolonged illness may also contribute to nutritional deficiencies that can affect the health of the ocular surface. Most eye-related symptoms improve once the infection is treated and hydration is restored.
Diagnosis and Treatment
Diagnosis is made through specialized stool testing. The infection is usually treated successfully with prescription antibiotics. Prompt medical treatment can shorten the illness and reduce the risk of complications.
Prevention Tips
- Wash all fresh fruits and vegetables thoroughly under running water before eating, cutting, or cooking them.
- Wash produce even if you plan to peel it.
- Wash your hands before preparing food.
- Use clean cutting boards and utensils.
- Refrigerate perishable produce promptly.
While washing may not eliminate every parasite, it helps reduce contamination and is an important part of safe food handling.
When to Seek Medical Care
If you experience persistent diarrhea, signs of dehydration, or new vision changes, seek medical attention promptly. While eye complications from cyclosporiasis are uncommon, any sudden or significant changes in vision should be evaluated by an eye care professional.
Practicing good hygiene and carefully washing fresh fruits and vegetables are simple but effective steps to help reduce your risk of cyclosporiasis as cases continue to be reported across the country, including in Michigan.