The word "tsetse" refers to a type of fly found in Africa. It is known for spreading a disease called sleeping sickness to humans and animals. Full definition
Predicting the distribution of tsetse flies in west Africa using temporal Fourier processed meteorological satellite data (elifesciences.org)
HAT is caused by a single - celled parasite, Trypanosoma brucei, that enters the body through the bites of tsetse flies. (sciencemag.org)
Gambian sleeping sickness, or Gambian human African trypanosomiasis, is caused by a parasite called Trypanosoma brucei gambiense, carried by tsetse flies in Central and West Africa. (sciencedaily.com)