Steroid Alkaloids from Holarrhena africana with Strong ...
2017-7-6 · 1. Introduction. Human African trypanosomiasis (HAT) is a vector-borne parasitic disease caused by the kinetoplastid parasites, Trypanosoma brucei rhodesiense (Tbr) and Trypanosoma brucei gambiense (Tbg).The disease ranks 11th, 14th and 4th in the list of neglected tropical diseases (NTDs) for which disability-adjusted life years (DALYs), years of life lost (YLLs) due to mortality and years ...