| Date | 1725 |
| Author | Vallisnieri |
| Contribution | Espoused idea of animate contagion. |
| Reference | Wilson |
| Notes | Date is approximate and tentative. See "The Invisible World" by Catherine Wilson, 1995. Antonio Vallisnieri not in Garrison in this context. See 1733, same author. That entry would indicate that the above date is wrong; should be earlier. |
| Category | Causation |
| Pathogen Class | General |
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