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sleep'ing sick"ness



Pathol.
1. Also called African sleeping sickness, African trypanosomiasis. a generally fatal disease, common in parts of Africa, characterized by fever, wasting, and progressive lethargy: caused by a parasitic protozoan, Trypanosoma gambiense or T. rhodesiense, that is carried by a tsetse fly, Glossina palpalis.
2. Also called epidemic encephalitis, lethargic encephalitis. a viral disease affecting the brain, characterized by apathy, sleepiness, extreme muscular weakness, and impairment of vision. Also, Brit.,sleepy sickness.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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