title: Informed speculation on the cause of sleeping sickness 1898-1903.
mesh_terms: D000462:Algeria; D004739:England; D005714:Gambia; D049672:History, 19th Century; D049673:History, 20th Century; D007303:Insect Vectors; D014345:Trypanosoma / Q000302:isolation & purification*; D014353:Trypanosomiasis, African / Q000209:etiology / Q000266:history*; D014370:Tsetse Flies; D014454:Uganda