| Date | 1894 |
| Author | Yersin |
| Contribution | Reported bacillus responsible for plague (Yersinia pestis). |
| Reference | Lechevalier |
| Notes | Work done in Hong Kong at same time as Kitasato's work on plague in same city. Full account in Lechevalier. |
| Category | Causation |
| Pathogen Class | Bacteria |
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