MCQs on Vector-Borne Diseases

Here’s a set of multiple-choice questions (MCQs) on Vector-Borne Diseases, covering basic to advanced concepts, along with an answer key at the end.

MCQs on Vector-Borne Diseases

Basic Level

1. Vector-borne diseases are transmitted by:
   a) Direct contact with an infected person
   b) Contaminated food and water
   c) Arthropods like mosquitoes, ticks, and fleas
   d) Airborne droplets

2. Which of the following is a vector-borne disease?
   a) Tuberculosis
   b) Cholera
   c) Dengue fever
   d) COVID-19

3. Malaria is caused by:
   a) A virus
   b) A bacterium
   c) A parasite (Plasmodium)
   d) A fungus

4. The vector for malaria is:
   a) Aedes mosquito
   b) Anopheles mosquito
   c) Culex mosquito
   d) Sandfly

5. Which of the following mosquitoes transmits Dengue fever?
   a) Anopheles
   b) Culex
   c) Aedes
   d) Phlebotomus

Intermediate Level

6. Chikungunya virus is transmitted by:
   a) Anopheles mosquito
   b) Aedes mosquito
   c) Tsetse fly
   d) Ixodes tick

7. Which of the following diseases is transmitted by ticks?
   a) Leishmaniasis
   b) Lyme disease
   c) Yellow fever
   d) Onchocerciasis

8. Zika virus infection is transmitted primarily by:
   a) Sandflies
   b) Aedes mosquitoes
   c) Ticks
   d) Rodents

9. The vector of Japanese encephalitis is:
   a) Aedes mosquito
   b) Culex mosquito
   c) Anopheles mosquito
   d) Tsetse fly

10. The sandfly transmits which of the following diseases?
    a) Leptospirosis
    b) Leishmaniasis
    c) West Nile fever
    d) Typhoid fever

Advanced Level

11. The primary vector for West Nile virus is:
    a) Tsetse fly
    b) Culex mosquito
    c) Fleas
    d) Blackflies

12. Trypanosomiasis (Sleeping sickness) is transmitted by:
    a) Aedes mosquito
    b) Tsetse fly
    c) Blackfly
    d) Fleas

13. Onchocerciasis (River blindness) is caused by:
    a) Trypanosoma parasite
    b) Onchocerca volvulus
    c) Plasmodium falciparum
    d) Yersinia pestis

14. Plague is transmitted by:
    a) Fleas
    b) Lice
    c) Mites
    d) Ticks

15. Rickettsial diseases, such as Rocky Mountain spotted fever, are transmitted by:
    a) Mosquitoes
    b) Ticks
    c) Sandflies
    d) Rodents

Super-Hard Level

16. What is the reservoir host for the Zika virus in nature?
    a) Humans
    b) Birds
    c) Non-human primates
    d) Rodents

17. Which vector-borne disease has been successfully eradicated through vector control efforts?
    a) Yellow fever
    b) Malaria
    c) Dracunculiasis (Guinea worm disease)
    d) Leishmaniasis

18. The Ixodes tick is responsible for the transmission of which TWO diseases?
    a) Lyme disease and Babesiosis
    b) Malaria and Trypanosomiasis
    c) Dengue and Zika virus
    d) Chikungunya and Yellow fever

19. The incubation period of Dengue fever after a mosquito bite is typically:
    a) 1-2 days
    b) 4-10 days
    c) 14-21 days
    d) 30-60 days

20. Vector control measures primarily aim to:
    a) Kill the pathogen directly
    b) Reduce vector population and contact with humans
    c) Strengthen host immunity
    d) Provide immediate symptomatic relief

Answer Key

1. c
2. c
3. c
4. b
5. c
6. b
7. b
8. b
9. b
10. b
11. b
12. b
13. b
14. a
15. b
16. c
17. c
18. a
19. b
20. b