# Norovirus Genogroup I outbreak — California, 2003-11
> **Food** · Suspected · 13 ill / 0 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-c3a0a073555f
- **Date:** 2003-11
- **State:** California
- **Primary mode:** Food
- **Etiology:** Norovirus Genogroup I
- **Etiology status:** Suspected
- **Setting:** Restaurant: Other
## Impact
- **Illnesses:** 13
- **Hospitalizations:** 0
- **Deaths:** 0
## Food vehicle

- **Food:** cheddar cheese, unspecified
- **Contaminated ingredient:** cheese
- **IFSAC category:** Dairy

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