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Which of the following protozoan causes African sleeping sickness

  • A.Plasmodium vivax
  • B.Entamoeba gingivalis
  • C.Trypanosoma lewsii
  • D.Trypanosoma gambiense

Answer: D

Correct answer: Trypanosoma gambiense

T. gambiense causes the chronic West African form of sleeping sickness and T. rhodesiense the acute East African form, both carried by the tsetse fly. T. lewisi is a parasite of rats and harmless to man, and the other two options belong to quite different diseases.

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