Why this parasite is hard to remove

Cyclospora cayetanensis is very resilient. In refrigerated foods and fresh produce, it can survive for weeks to months because it forms a protective cyst called an oocyst. Regular washing and standard chemical disinfectants do not kill it. Because of this resistant nature, it survives until the food spoils or dries out.

How it becomes infectious

After leaving a host in a bowel movement, the parasite needs 1-2 weeks in the environment to mature and become infectious. It usually spreads through contaminated irrigation water or through cross-contamination during food preparation — not directly from person to person.

The one thing that reliably kills it

Higher-risk foods

Outbreaks are frequently linked to fresh, ready-to-eat produce that is rarely cooked. In past outbreaks these have included:

The source of the current outbreak has not yet been identified. This list reflects foods commonly linked to Cyclosporiasis, not a confirmed cause of this event.

How to reduce your risk

• Wash your hands with soap and water before and after handling or preparing raw fruits and vegetables.
• Wash all fruits and vegetables thoroughly under running water before eating, cutting, or cooking.
• Scrub firm produce such as melons and cucumbers with a clean produce brush.
• Refrigerate cut, peeled, or cooked fruits and vegetables within two hours.
• Avoid food or water that may be contaminated with feces (human waste).