Sleeping sickness also called African trypanosomiasis is a disease caused by infection with the flagellate protozoan Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense.
What causes sleeping sickness?
Sleeping sickness is caused by two types of parasites Trypanosoma brucei rhodesiense and Trypanosomoa brucei gambiense. T b rhodesiense causes the more severe form of the illness. Tsetse flies carry the infection. When an infected fly bites you, the infection spreads through your blood. Human African trypanosomiasis takes 2 forms, depending on the parasite involved: Trypanosoma brucei gambiense accounts for more than 98% of reported cases.
Fever, severe headaches, irritability, extreme fatigue, swollen lymph nodes, and aching muscles and joints are common symptoms of sleeping sickness.