Question

Infection of Ascaris usually occurs by:

• A. Mosquito bite
• B. Tsetse fly
• C. Eating imperfectly cooked pork
• D. Drinking water containing eggs of Ascaris

Answer 1

The correct option is D

Drinking water containing eggs of Ascaris

The correct option is option D.

Explanation of the correct option:

1. It lives in the small intestine of man.
2. The infection is spread through the eating of contaminated eggs of Ascaris.
3. It lays its eggs in the small intestine which are then excreted through the feces.
4. Drinking water contaminated with feces can pass the infection from one person to another.

Explanation of the incorrect options:

Option A:

1. Ascaris is spread through the consumption of water or food contaminated with Ascaris eggs.
2. The diseases that are spread by a mosquito bite are malaria, dengue, kala-azar, and chikungunya.

Option B:

1. Tsetse flies are the vectors of trypanosomes that cause sleeping sickness.
2. Symptoms include fever, sleep disorders, and lymphadenopathy.

Option C:

1. Imperfectly cooked meat causes trichinosis.
2. It is a parasitic disease.
3. It is caused by roundworms.

Final answer: Infection of Ascaris usually occurs by drinking water containing eggs of Ascaris.