what iz de causative agent 4 de following protozoan diseases:1,Onchocerciasis, 2,schistosomiasis 3,trypanosomiasis? 1,onchocerciasis is cause by onchocerca volvolus. schistosomiasis is cause by schistosoma mansoni, schistosoma japanirum and schistosoma heamatobeur. trypanosomiasis is cause by trypanosome brucegambience & trypanosome bruceirrodiense. tiffany blue styled items to wear for the maid of the brides