original_query: What were Theodor Maximilian Bilharz's contributions to the field of parasitology?
query: What were Theodor Maximilian Bilharz's contributions to the field of parasitology?
answer: Theodor Bilharz's major contribution to parasitology was the discovery of the blood fluke *Schistosoma haematobium*, the causative agent of schistosomiasis (bilharzia).  He also discovered other helminth parasites, including *Hymenolepis nana* and *Heterophyes heterophyes*.  His work was foundational to the field of tropical medicine.