# Norovirus Genogroup I outbreak — Montana, 2018-09
> **Indeterminate/unknown** · Confirmed · 30 ill / 0 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-cacf73fd8a08
- **Date:** 2018-09
- **State:** Montana
- **Primary mode:** Indeterminate/unknown
- **Etiology:** Norovirus Genogroup I (GI.P4 GI.4)
- **Etiology status:** Confirmed
- **Setting:** Long-term care/nursing home/assisted living facility
## Impact
- **Illnesses:** 30
- **Hospitalizations:** 0
- **Deaths:** 0
## Source
- [NORS Dashboard](https://wwwn.cdc.gov/norsdashboard/)
---
*AI Analytics · CC0 1.0*