| Organism | Intermediate hosts | Distribution | Notes |
|---|---|---|---|
| Diphyllobothrium latum | Cyclops or Diaptomus microcrustacean followed by freshwater fish | Scandinavia (related to smoked/pickled fish), Siberia, Russia, Japan, Chile, and Uganda | largest human tapeworm, up to 10 m |
| Hymenolepis nana | none; only in humans | ||
| Taenia saginata | cows | worldwide, highest in Africa and Asia | |
| Taenia solium | pigs (and humans) | worldwide, highest in Mexico, Central/South America, Southwest Asia, and Africa | humans are intermediate (cysticercosis) and definitive (taeniasis) hosts |
