# Legionella pneumophila outbreak — South Dakota, 1985-04
> **Water** · Confirmed · 26 ill / 26 hosp / 10 deaths
## Outbreak
- **NORS ID:** NORS-e016667b52bb
- **Date:** 1985-04
- **State:** South Dakota
- **Primary mode:** Water
- **Etiology:** Legionella pneumophila (serogroup 1)
- **Etiology status:** Confirmed
- **Setting:** Hospital
## Impact
- **Illnesses:** 26
- **Hospitalizations:** 26
- **Deaths:** 10
## Water exposure

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

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