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Question

A gastrointestinal disease caused by the protozoan Entamoeba histolytica leads to abdominal pain and stools with excess mucous and blood clots. It often spreads through contaminated food and water via houseflies acting as mechanical carriers. Which disease is described?

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is

Amoebiasis

The described symptoms — abdominal pain, mucous and blood in stools, spread via contaminated food/water and houseflies — match Amoebiasis, caused by Entamoeba histolytica.

Cholera is caused by Vibrio cholerae bacteria, Ascariasis by roundworms, and Giardiasis by a different protozoan (Giardia), each with distinct causative agents.

Hence, Amoebiasis is the correct answer.

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