- Yeast can be found almost everywhere in Point Lookout, and sometimes also on swampfolk.
- Can be found in graves.
- 5 in Calvert Mansion.
- 3 in the mansion's panic room.
- 3 in the Ark & Dove cathedral.
- 3 in the Chinese Intelligence bunker.
- 3 in the burned-out basement.
- 3 in the medical tent.
- 3 in Blackhall Manor.
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