# Norovirus unknown outbreak — Colorado, 2012-03
> **Person-to-person** · Suspected · 347 ill / 0 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-8e76c6e343f1
- **Date:** 2012-03
- **State:** Colorado
- **Primary mode:** Person-to-person
- **Etiology:** Norovirus unknown
- **Etiology status:** Suspected
- **Setting:** School/college/university
## Impact
- **Illnesses:** 347
- **Hospitalizations:** 0
- **Deaths:** 0
## Source
- [NORS Dashboard](https://wwwn.cdc.gov/norsdashboard/)
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