| Date | 1869 |
| Author | Pasteur |
| Contribution | Reported two enteric ferments associated with the silkworm disease flacherie. |
| Reference | Carter |
| Notes | One was a "vibrion" and one appeared as "strings of grainss". He conceded that causation was uncertain. |
| Category | Causation |
| Pathogen Class | General |
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