| Date | 1862 |
| Author | Leuckart |
| Contribution | Found beef tapeworm, Taenia saginata, in calves fed Cysticercus bovis. |
| Reference | Grove |
| Notes | Reported in the following year. This was the "beef" counterpart to the "pork" cycle reported by van Beneden. From this point, this chronology will pay little attention to further refinements or additions concerning helminths, because their status as infective agents was established. |
| Category | Causation |
| Pathogen Class | Helminths |
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