# Legionella pneumophila;Legionella pneumophila outbreak — Maryland, 2009-09
> **Water** · Confirmed;Confirmed · 10 ill / 9 hosp / 1 deaths
## Outbreak
- **NORS ID:** NORS-8ec3e4a97502
- **Date:** 2009-09
- **State:** Maryland
- **Primary mode:** Water
- **Etiology:** Legionella pneumophila;Legionella pneumophila (serogroup 1;serogroup 1, MAb (1,2,3), Knoxville 1)
- **Etiology status:** Confirmed;Confirmed
- **Setting:** Apartment/Condo
## Impact
- **Illnesses:** 10
- **Hospitalizations:** 9
- **Deaths:** 1
## Water exposure

- **Exposure:** Drinking water
- **Water type:** Community

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