| Date | 1873 |
| Author | Loesch |
| Contribution | Described Entamoeba histolytica. |
| Reference | Foster |
| Notes | Recognized editorially as a milestone in the history of parasitology, in Parasitology Today 9:347, 1993; see 1875. Same as 'Losh' with umlaut. |
| Category | Causation |
| Pathogen Class | Protozoa |
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