Protozoa are responsible for diseases such as malaria , amebic dysentery , giardia , leishmaniasis , and trypanosomiasis .
原生动物是类似疟疾、阿米巴痢疾、贾第虫症、黑热病和锥虫病的罪魁祸首。
As the result , transmission rates of numerous infectious disease agents have dramatically increased - influenza , rabies , yellow fever , dengue fever , malaria , trypanosomiasis , hookworm , schistosomiasis and today these agents emerge and re-emerge with devastating regularity at the tropical and sub-tropical agricultural interface .