| Date | 1875 |
| Author | Feser |
| Contribution | Found bacteria in cattle blackleg. |
| Reference | Stalheim |
| Notes | T. Von Feser. He found rod-shaped bacteria in blood of cattle that had died of blackleg disease (now known to be clostridial infection). See 1887. |
| Category | Causation |
| Pathogen Class | Bacteria |
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