| Date | 1874 |
| Author | Cohn |
| Contribution | Described what would now be called actinomycosis, in the lachrymal canal. |
| Reference | Anon. |
| Notes | Named the organism Streptothrix foersteri. New genus and species. Disease "lumpy jaw" caused by same or related species of Actinomyces? Did Cohn postulate causation? Here assigned to the pathogen class Bacteria; but organisms of this type were generally regarded as fungi at this time. See Israel; Wolff; Hartz. |
| Category | Causation |
| Pathogen Class | Bacteria |
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