| Date | 1876 |
| Author | Normand |
| Contribution | Reported Strongyloides (Anguillula) stercoralis as a new nematode parasite of humans. |
| Reference | Grove |
| Notes | Reported it as the apparent cause of severe diarrhea. The parasitic female worm is so small that it could be considered a microbe (no parasitic male has been found). |
| Category | Causation |
| Pathogen Class | Helminths |
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