Cyclosporiasis Outbreak

An intestinal illness caused by the microscopic parasite Cyclospora cayetanensis, usually spread through fresh produce or water contaminated with infected stool. Most cases in the U.S. are linked to imported fresh herbs, berries, and leafy greens.

SYMPTOMS TO WATCH FOR

Watery diarrhea — often frequent, sometimes with loss of appetite, bloating, or gas.

Fatigue & cramping — stomach cramps, nausea, and low-grade fever are common.

Onset — symptoms typically begin about a week after exposure and, if untreated, can last weeks or come and go for over a month.

HOW IT SPREADS

Not direct contact — the parasite needs days to weeks outside the body to become infectious, so it does not spread person-to-person like a cold or flu.

Contaminated produce — fresh fruits, vegetables, and herbs irrigated or washed with tainted water.

Contaminated water — untreated water swallowed while drinking, swimming, or preparing food.

PREVENTION TIPS

Simple habits that cut your risk at the source

1. Rinse produce well

Wash fruits and vegetables under running water, even if you'll peel them, and scrub firm items with a clean brush.

2. Know your water

Drink treated or bottled water when traveling, and avoid swallowing water from pools, lakes, or rivers.

3. Watch high-risk foods

Take extra care with raw herbs (basil, cilantro), berries, and pre-cut salad mixes, especially imported ones.

4. Keep prep areas clean

Wash cutting boards, knives, and countertops after contact with unwashed produce.

5. Practice good hand hygiene

Wash hands with soap before cooking or eating and after using the bathroom or changing diapers.

6. See a doctor if symptomatic

A stool test can confirm infection; it's treated with a course of prescription antibiotics.