# Norovirus unknown outbreak — Montana, 2018-12
> **Person-to-person** · Confirmed · 100 ill / 0 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-909d805331f8
- **Date:** 2018-12
- **State:** Montana
- **Primary mode:** Person-to-person
- **Etiology:** Norovirus unknown
- **Etiology status:** Confirmed
- **Setting:** School/college/university
## Impact
- **Illnesses:** 100
- **Hospitalizations:** 0
- **Deaths:** 0
## Source
- [NORS Dashboard](https://wwwn.cdc.gov/norsdashboard/)
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