- Gram negative rod
- Ingestion of raw/uncooked dairy or handling infected animals
- Veterinarians
- Meat packers
- Farmers
- Middle East
- Mediterranean
- Mexico
- Africa
- Causes weeks/months of recurrent: f, c, sweats, arthritis, adenopathy, testicular pain, hepato-splenomegaly
- Testicular pain and swelling
- Hepato-splenomegaly