Question

Which of the following causes typhoid fever?

• A. Salmonella typhi
• B. Mosquito
• C. Plasmodium
• D. Nicotine

Hint:

Prevent typhoid fever by ensuring clean drinking water, proper sanitation, and avoiding contaminated food.

Answer 1

The Correct Option is A

Step 1: Causative agent of typhoid fever

Typhoid fever originates from the bacterium Salmonella typhi, disseminated via contaminated food and water.

Step 2: Typhoid fever symptoms

Indications include:

• Elevated temperature
• Lethargy
• Abdominal discomfort
• Cephalalgia
• Bowel irregularity (constipation or diarrhea)

Step 3: Exclusion of erroneous choices

(B) Incorrect: Mosquitoes transmit maladies such as malaria and dengue, not typhoid.

(C) Incorrect: Plasmodium is a protozoan parasite that causes malaria.

(D) Incorrect: Nicotine is a chemical substance and not an infectious disease pathogen.