| Date | 30 |
| Author | Columella |
| Contribution | Speculated that fever may be caused in some way by marsh insects. |
| Reference | Dowel |
| Notes | Date is approximate (Columella died circa 40 C.E.) Many such speculations were recorded over the centuries, and undoubtedly many more went unrecorded. It cannot be assumed that Columella meant "insect" in the modern sense. It could have referred to any small invertebrate. |
| Category | Miscellany |
| Pathogen Class | General |
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