Question

Which one of the following diseases is not transmitted by mosquitoes?

• A. Brain fever
• B. Malaria
• C. Typhoid
• D. Dengue

Answer 1

The correct option is C

Typhoid

The correct option is C i.e. Typhoid

Explanation of the correct option:

1. Typhoid is a water-borne disease.
2. The causal agent is a bacteria called Salmonella typhi.
3. It is transmitted via contaminated food and water.

Explanation of the incorrect options:

Option A

Brain fever or encephalitis is caused by the bite of the Culex sp. mosquito that transfers the disease-causing Zika virus to the brain.

Option B

Malaria is transmitted by the bite of the female Anopheles mosquito that transfers the pathogenic Plasmodium sp. to the bloodstream of the patient.

Option D

Dengue is transmitted by the bite of the Aedes sp. of mosquitoes.

Final Answer: Typhoid is not transmitted by mosquitoes.