| Date | 1894 |
| Author | Kitasato |
| Contribution | Isolated bacterial agent of plague (Yersinia pestis). |
| Reference | Ackerknecht |
| Notes | Discovered independently by Yersin in same place (Hong Kong) at same time. Some uncertainty about the purity of Kiasato's cultures. |
| Category | Causation |
| Pathogen Class | Bacteria |
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