# Legionella pneumophila outbreak — Michigan, 2018-04
> **Water** · Confirmed · 4 ill / 4 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-518b204aa6ed
- **Date:** 2018-04
- **State:** Michigan
- **Primary mode:** Water
- **Etiology:** Legionella pneumophila (serogroup 1)
- **Etiology status:** Confirmed
- **Setting:** Unknown
## Impact
- **Illnesses:** 4
- **Hospitalizations:** 4
- **Deaths:** 0
## Water exposure

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

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