| Date | 1890 |
| Author | Maffucci |
| Contribution | Isolated avian tubercle bacillus Bacillus gallinaceous. |
| Reference | Lee |
| Notes | Angelo Maffucci, known for his work on human tuberculosis. Listing by Lee does not indicate whether whether Maffucci showed causation. |
| Category | Causation |
| Pathogen Class | Bacteria |
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