# Cryptosporidium parvum outbreak — Pennsylvania, 1991-08
> **Water** · Confirmed · 551 ill / 0 hosp / 0 deaths
## Outbreak
- **NORS ID:** NORS-537a6ea4ccce
- **Date:** 1991-08
- **State:** Pennsylvania
- **Primary mode:** Water
- **Etiology:** Cryptosporidium parvum
- **Etiology status:** Confirmed
- **Setting:** Park - Other/Unspecified
## Impact
- **Illnesses:** 551
- **Hospitalizations:** 0
- **Deaths:** 0
## Water exposure

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

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