| Date | 1862 |
| Author | Davaine |
| Contribution | Reported infectivity of helminth eggs. |
| Reference | Grove |
| Notes | Reported that eggs of Ascaris and Trichuris embryonate outside the host, but hatch only upon reaching the intestine of another susceptible host. |
| Category | Miscellany |
| Pathogen Class | Helminths |
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