<prompt> Tse-tse fly transmits -Trypansoma bruceiT.cruziKala-azarOriental sore  <response>: Ans. is a i.e., Trypanosoma brucei Trvpanosoma brucei . It is the causative organism of sleeping sickness. . T. brucei gambiense West African sleeping sickness . T. brucei rhodesiense East African sleeping sickness . Definitive host Man Intermediate host -- Tsetse fly . Infective form to men -- Metacyclic form metacyclic trypomastigote . Habitat - Reticuloendothelial tissue of lymphnode and spleen. - Blood - Connective tissue spaces of various organs. - C.S.F. - Intercellular spaces in the brain. 