| Date | 1883 |
| Author | Loeffler |
| Contribution | Published firstl statement of Koch's Postulates, as guide to the establishment of disease causation by a mibroorganism. |
| Reference | Brock |
| Notes | Koch published a similar statement in 1890. Loeffler was one of Koch's associates. |
| Category | Causation |
| Pathogen Class | Bacteria |
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