Cyclospora cayetanensis: The Hidden Culprit Behind Mysterious Digestive Illness
- Jul 13
- 3 min read
Updated: Jul 30
Cyclospora cayetanensis is a microscopic protozoan parasite that causes an intestinal infection known as cyclosporiasis. This parasite is most commonly transmitted through ingestion of food or water contaminated with feces. It thrives in tropical and subtropical environments and is often linked to imported fresh produce such as berries, basil, and leafy greens.
Cause and Transmission
Infection occurs when a person consumes sporulated oocysts, which are the infectious form of Cyclospora. These oocysts are passed in the feces of an infected person but are not immediately infectious. They require days to weeks in the environment to become infectious, which makes direct person-to-person transmission uncommon.
