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Sleeping sickness in man is caused by the organism

  • A.Plasmodium
  • B.Entamoeba
  • C.Giardia
  • D.Trypanosoma

Answer: D

Sleeping sickness in man is caused by Trypanosoma, a flagellate protozoan.

It is transmitted by the bite of the tsetse fly in tropical Africa. The parasite multiplies in the blood and lymph and eventually invades the central nervous system, causing the disordered sleep that gives the disease its name.

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