Sleeping sickness or<unk>  is a parasitic disease of people and animals caused by protozoa of the genus Trypanosoma and transmitted by the tsetse fly. The disease is endemic to certain regions of Sub-Saharan<unk>  covering about 36 countries and 60 million people. The clinical course of human<unk>  has two stages. In the first stage, the parasite is found in the peripheral circulation but it has not yet invaded the central nervous system. Once the parasite crosses the blood-brain barrier and infects the central nervous system, the disease enters the second stage. The subspecies that cause<unk>  have different rates of disease progression, and the clinical features depend on which form of the parasite (Trypanosoma brucei rhodesiense or Trypanosoma brucei gambiense) is causing the infection. However, infection with either form will eventually lead to coma and death if not treated.
African trypanosomiasis
Leishmaniasis
Psittacosis
Visceral leishmaniasis
Babesiosis
Malaria
Isosporiasis
Cyclosporiasis