# Cyclosporiasis: parasitic illness causing explosive diarrhea

Cyclosporiasis is a parasitic infection spread through contaminated food or water, leading to severe, watery diarrhea. The illness, caused by Cyclospora cayetanensis, can last weeks if untreated. Awareness is crucial for travelers and during outbreak investigations.

**Importance:** 2/5

## Sources

### World
- [The Guardian World](https://www.theguardian.com/us-news/2026/jul/09/cyclosporiasis-illness-explainer) — Thu, 09 Jul 2026 10:00:03 GMT