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Question

Which among the following is an odd one?


A

Kala-azar

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B

Elephantiasis

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C

Amoebic dysentery

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D

Sleeping sickness

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Solution

The correct option is B

Elephantiasis


The correct option is B:

Explanation of the correct option :

Option B:

  1. Elephantiasis is caused by a roundworm Wuchereria bancrofti whereas the rest of the mentioned diseases are protozoan diseases.
  2. Lymphatic obstruction occurs by microfilaria, swelling, and pain.
  3. Affected parts include the testis, breasts, hands, and feet are enlarged enormously.
  4. The primary host for the disease is the man.
  5. The intermediate host for the disease of the disease is the mosquito.

Explanation of the incorrect option:

Option A:

Kala-azar is caused by a protozoa parasite - Leishmania.

Option C:

Amoebic dysentery is caused by a protozoa parasite - Entamoeba histolytica.

Option D:

Sleeping sickness is caused by a protozoa parasite - Trypanosoma.

Final answer: Elephantiasis is caused by a roundworm Wuchereria bancrofti whereas the rest of the mentioned diseases are protozoan diseases. Elephantiasis is an odd one.


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