| Date | 1886 | 
| Author | Calandruccio | 
| Contribution | Infected himself with Trichuris (whipworm) by ingesting eggs. | 
| Reference | Grove | 
| Notes | The finding was reported by Grassi in the following year. Evidence of a direct lifecycle had previously been reported for domestic animals. | 
| Category | Causation | 
| Pathogen Class | Helminths | 
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