Their sleep may be disturbed by an illness or fever. Flies called tsetse flies carry the infection. TbG causes over 98% of reported cases. Humans are infected by two types, Trypanosoma brucei gambiense (TbG) and Trypanosoma brucei rhodesiense (TbR). Sleeping sickness is caused by two organisms: T. brucei rhodesiense T. brucei gambiense . Why is trypanosomiasis called sleeping sickness? More than 98% of the accounted cases are caused by this strain. If an infected fly bites you, painful, red swelling occurs at the site of the bite. Step 1. This can affect the brain and causes mental deterioration, coma, and death. Biology. High School. The infection spreads through the blood. These organisms often cause disease in humans and other animals. There are two strains of the African Sleeping Sickness. Sleeping Sickness Meaning. It is caused by the Trypanosoma brucei, a parasitic protozoan carried by the tsetse fly. Old age. It is a slower developing chronic form of the disease caused by T. brucei ambiance. Click here to get an answer to your question ️ Why is the sickness caused by trypanasomes called African sleeping sickness? Log in. Human African trypanosomiasis, also known as sleeping sickness, is a vector-borne parasitic disease. 1. 6 points Kotrys197 Asked 02.17.2015. It is caused by the species Trypanosoma brucei. The African Sleeping Sickness is a prevalent disease in sub-Saharan Africa. The parasites are the organism that lives in another organism called the host. Encephalitis lethargica is an atypical form of encephalitis.Also known as "sleeping sickness" or "sleepy sickness" (distinct from tsetse fly-transmitted sleeping sickness), it was first described in 1917 by the neurologist Constantin von Economo and the pathologist Jean-René Cruchet.The disease attacks the brain, leaving some victims in a statue-like condition, speechless and motionless. Why is the sickness caused by trypanasomes called African sleeping sickness? Call your doctor if your child has a fever and is sluggish when waking up. The more severe form of the illness is caused by rhodesiense . 1. See Solution. Join now. Without the organism these organism live, grow and multiply. It is caused by infection with protozoan parasites belonging to the genus Trypanosoma.They are transmitted to humans by tsetse fly (Glossina genus) bites which have acquired their infection from human beings or from animals harbouring human pathogenic parasites. There are three type... Want to see the full answer? check_circle Expert Answer. Join now. the first type is caused by the t. brucei gambiense. African trypanosomiasis, also known as African sleeping sickness or simply sleeping sickness, is an insect-borne parasitic infection of humans and other animals. West African sleeping sickness - This sleeping sickness is also called Gambian sleeping sickness. Check out a sample Q&A here. 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