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foodborne illness

Cyclospora cayetanensis is a single-celled parasite that causes a prolonged gastrointestinal illness known as cyclosporiasis. Unlike many foodborne pathogens, it is not typically transmitted through direct person-to-person contact; instead, infection occurs when a person consumes food or water contaminated with the parasite’s oocysts, which require time in the environment after being shed before they become infectious. This life cycle detail is part of why outbreaks are often traced to specific growing regions and specific crops, particularly fresh herbs, leafy greens and certain berries, rather than to contamination at the point of sale or preparation.

• Wash fresh produce thoroughly under running water, even items with skins that are not eaten, before preparation.
• Be aware that washing alone does not always remove all contamination, particularly for delicate leafy greens and herbs.
• Seek medical advice for persistent watery diarrhoea, especially if accompanied by fatigue or weight loss.
• Follow public health advisories about specific implicated products during an active outbreak investigation.