# Giardia duodenalis outbreak — Wyoming, 2011-11
> **Water** · Confirmed · 20 ill / 0 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-da21ae5fb2b2
- **Date:** 2011-11
- **State:** Wyoming
- **Primary mode:** Water
- **Etiology:** Giardia duodenalis (unknown)
- **Etiology status:** Confirmed
- **Setting:** Outdoor Area
## Impact
- **Illnesses:** 20
- **Hospitalizations:** 0
- **Deaths:** 0
## Water exposure

- **Exposure:** Other/Environmental water
- **Water type:** —

## Source
- [NORS Dashboard](https://wwwn.cdc.gov/norsdashboard/)
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