| Trypanosoma brucei gambiense | Trypanosoma brucei rhodesiense | |
| Geographic distribution | West and Central Africa | East and Southern Africa |
| Fly species | Glossina palpalis | Glossina morsitans |
| Fly habitat | Humid; river habitat | Dry; savannah and woodland habitat |
| Primary host | Humans | Animals |
| Nature of clinical infection | Chronic | Acute |
