| Date | 1790 |
| Author | Abildgaard |
| Contribution | Reported tapeworm in ducks after feeding them the intermediate host (fish) harboring the larval stage. |
| Reference | Grove |
| Notes | Based on observation and deduction. First known attempt to demonstrate parasite transmission. Major discovery but not appreciated in its day. |
| Category | Miscellany |
| Pathogen Class | Helminths |
Copyright © 2007- William C. Campbell. All rights reserved.