| Date | 1867 |
| Author | Pasteur |
| Contribution | Reported that silkworm deaths were attributable to two diseases. |
| Reference | Carter |
| Notes | One was the corpuscular disease, or pebrine; the other was a non-corpuscular, enteric-fermentation disease, or flacherie. The corpuscles were seen to reproduce (cf. 1866) and were thus microorganisms. Both diseases could be controlled by selective breeding of healthy worms. |
| Category | Causation |
| Pathogen Class | General |
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