Question

Which one of the following diseases is not transmitted by a mosquito?

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

Answer 1

The correct option is C

Typhoid

The correct option is C.
Explanation for the correct option:
Option C:

1. A bacterial infection called typhoid fever can spread throughout the body and harm numerous organs.
2. Salmonella typhi bacteria are the culprit behind typhoid.
3. It is a disease spread contaminated water and food.
4. Salmonella typhi is found in the faeces of typhoid patients.
5. Such faeces damage water when they come into contact with bodies of drinking water.

Explanation for the incorrect options:
Option A:

1. The term "brain fever" refers to a medical disease in which an area of the brain becomes inflamed and produces symptoms like fever.
2. A viral infection spread by mosquitoes causes Japanese encephalitis.
3. In Asia, it is the main source of viral encephalitis.
4. When a mosquito carrying the virus bites a human, it can contract the sickness.
5. It is impossible for the Japanese encephalitis virus (JEV) to spread from one person to another.
6. The virus that causes brain fever is spread by female mosquitoes of the species Culex tritaeniorhynchus.

Option B:

1. Malaria is a dangerous and occasionally fatal disease caused by a parasite that frequently infects a particular breed of mosquito that feeds on humans.
2. The carrier or vector of malaria is the female anopheles mosquito.
3. Malaria frequently results in severe illness, including high fevers, chills that make us tremble, and flu-like symptoms.
4. A malarial parasite may grow in the mosquito's body after a bite and then transfer to the victim.

Option D:

1. Dengue is a virus-borne illness spread by mosquitoes in tropical and subtropical regions.
2. Dengue is spread by the Ades mosquito which breed in water holding containers or places.
3. The virus responsible for causing dengue, is called dengue virus (DENV).
4. Symptoms include high fever, headache, rash and muscle and joint pain.
5. In severe cases there is serious bleeding and shock, which can be life threatening.

Final answer: Typhoid disease is not transmitted by mosquitoes.