# Legionella pneumophila outbreak — Illinois, 2009-09
> **Water** · Confirmed · 8 ill / 8 hosp / 2 deaths
## Outbreak
- **NORS ID:** NORS-e3a635a3b8b2
- **Date:** 2009-09
- **State:** Illinois
- **Primary mode:** Water
- **Etiology:** Legionella pneumophila (serogroup 1)
- **Etiology status:** Confirmed
- **Setting:** Assisted Living/Rehab
## Impact
- **Illnesses:** 8
- **Hospitalizations:** 8
- **Deaths:** 2
## Water exposure

- **Exposure:** Undetermined water
- **Water type:** —

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