Which one of the following organisms is responsible for sleeping sickn

Which one of the following organisms is responsible for sleeping sickness ?

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Leishmania

Trypanosoma

Ascaris

Helicobacter

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This question was previously asked in

UPSC CDS-2 – 2019

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Sleeping sickness, also known as African trypanosomiasis, is a parasitic disease caused by flagellate protozoa of the genus Trypanosoma. Specifically, *Trypanosoma brucei* subspecies are responsible for the disease in humans. The parasite is transmitted to humans through the bite of infected tsetse flies (Glossina species).

Sleeping sickness is caused by parasites of the genus *Trypanosoma* and is transmitted by the tsetse fly.

Leishmania causes leishmaniasis, Ascaris is a genus of parasitic roundworms causing ascariasis, and Helicobacter (specifically *Helicobacter pylori*) is a bacterium causing stomach infections.

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