| Date | 1866 |
| Author | Kolb |
| Contribution | Found bacteria in cholera stool. |
| Reference | Doetsch |
| Notes | O. Kolb. "Numberless bacteria bound together in gelatinous masses" were seen in rice-water discharges of patients. Cohn, cited in Doetsch. |
| Category | Causation |
| Pathogen Class | Bacteria |
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