# CDC probes parasite linked to severe diarrhea outbreaks in 18 US states

The U.S. Centers for Disease Control and Prevention is investigating a parasite that has caused cases of severe, explosive diarrhea across 18 states. The outbreak involves Cyclospora, a microscopic parasite often spread through contaminated food or water. This matters because it highlights ongoing food safety risks and the need for public awareness to prevent further infections.

**Importance:** 3/5

## Sources

### World
- [The Guardian World](https://www.theguardian.com/us-news/2026/jul/03/cdc-investigates-parasite-explosive-diarrhea) — Fri, 03 Jul 2026 21:13:46 GMT