# Norovirus Genogroup I outbreak — Montana, 2023-05
> **Food** · Confirmed · 186 ill / 0 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-dbd0ee96d887
- **Date:** 2023-05
- **State:** Montana
- **Primary mode:** Food
- **Etiology:** Norovirus Genogroup I (GI.P2 GI.2)
- **Etiology status:** Confirmed
- **Setting:** Restaurant: Fast-food (drive up service or pay at counter)
## Impact
- **Illnesses:** 186
- **Hospitalizations:** 0
- **Deaths:** 0
## Food vehicle

- **Food:** Sandwich
- **Contaminated ingredient:** —
- **IFSAC category:** Multiple

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