| Date | 1837 |
| Author | Donne |
| Contribution | Reported further observations on Trichomonas vaginalis. |
| Reference | Kean |
| Notes | See 1836. See Campbell, W. C. Trends in Parasitology 17: 499 - 500, 2001. |
| Category | Causation |
| Pathogen Class | Protozoa |
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