Question

Which of the following diseases is/are spread by a vector?

• A. Dengue
• B. Malaria
• C. Cholera
• D. Typhoid

Answer 1

Answer: (A), (B)

The correct options are
A Dengue
B Malaria

Dengue fever is caused by a virus while malaria is caused by a protozoan called Plasmodium. Both these diseases are spread by mosquitoes acting as vectors. Dengue is spread by the female Aedes mosquito while the female Anopheles mosquito spreads malaria. Cholera is a water-borne disease and typhoid is caused by contaminated food and water. These diseases do not spread by vectors.