What is a primary source of Cyclospora cayetanensis?

The primary source of Cyclospora cayetanensis is contaminated water. This protozoan parasite is often associated with fresh produce that has been irrigated or washed with contaminated water, particularly in tropical and subtropical regions where sanitation may be compromised.

Cyclospora infection, known as cyclosporiasis, commonly occurs through the ingestion of fruits and vegetables contaminated with oocysts from feces of infected individuals. Unlike some other foodborne pathogens, Cyclospora is less frequently transmitted through direct person-to-person contact or via animal contact. Its lifecycle includes an environmental phase where it becomes viable in the soil and water for extended periods, making contaminated water a key vector for its spread. Understanding this source is essential for food safety professionals in developing guidelines to prevent contamination in food establishments.