LU 4 Mosquito SCAQ Practice

General Mosquito-Borne Diseases

1. Which of the following diseases is NOT transmitted by mosquitoes?

   • a) Dengue

   • b) Japanese Encephalitis

   • c) Tuberculosis

   • d) Lymphatic Filariasis

2. What is the main vector of dengue fever?

   • a) Anopheles mosquito

   • b) Culex mosquito

   • c) Aedes mosquito

   • d) Mansonia mosquito

3. Which of the following mosquito-borne diseases is caused by a nematode parasite?

   • a) Dengue

   • b) Lymphatic Filariasis

   • c) Japanese Encephalitis

   • d) Yellow Fever

4. What is the main factor contributing to the spread of Japanese Encephalitis?

   • a) Increased deforestation

   • b) Air pollution

   • c) Direct human-to-human contact

   • d) Drinking contaminated water

Dengue and Dengue Hemorrhagic Fever (DHF)

5. Dengue is caused by a virus from which family?

   • a) Flaviviridae

   • b) Filoviridae

   • c) Plasmodiidae

   • d) Rhabdoviridae

6. How many serotypes of the dengue virus exist?

   • a) Two

   • b) Three

   • c) Four

   • d) Five

7. What is the primary reservoir for dengue viruses?

   • a) Birds

   • b) Pigs

   • c) Humans

   • d) Rodents

8. Aedes aegypti mosquitoes prefer to breed in:

   • a) Fast-flowing rivers

   • b) Natural tree holes

   • c) Artificial water containers like old tires and vases

   • d) Deep underground wells

9. Which of the following is a characteristic symptom of severe dengue hemorrhagic fever?

   • a) Swelling of lymph nodes

   • b) Plasma leakage

   • c) Skin ulcers

   • d) Chronic cough

10. What is the primary method for diagnosing dengue infection?

• a) Blood smear

• b) Serological tests

• c) X-ray imaging

• d) CT scan

Japanese Encephalitis (JE)

11. What is the primary vector for Japanese Encephalitis?

• a) Anopheles mosquito

• b) Aedes mosquito

• c) Culex mosquito

• d) Mansonia mosquito

12. The primary reservoirs for the Japanese Encephalitis virus are:

• a) Humans and cats

• b) Birds and pigs

• c) Dogs and rodents

• d) Frogs and fish

13. Japanese Encephalitis mostly affects which age group?

• a) Infants

• b) Children

• c) Elderly individuals

• d) All age groups equally

14. A key symptom of severe Japanese Encephalitis infection is:

• a) Vision loss

• b) Numbness in extremities

• c) Neurological damage leading to a vegetative state

• d) Persistent cough

15. What is the primary diagnostic method for Japanese Encephalitis?

• a) Stool examination

• b) Serological tests on blood and spinal fluid

• c) Skin biopsy

• d) Urine analysis

16. Which preventive measure is most effective for Japanese Encephalitis?

• a) Wearing thick clothing

• b) Using antibiotics

• c) Vaccination

• d) Drinking boiled water

Lymphatic Filariasis

17. Which mosquito genera can transmit Lymphatic Filariasis?

• a) Only Aedes

• b) Only Anopheles

• c) Aedes, Anopheles, Culex, and Mansonia

• d) Only Culex

18. What is the causative agent of Lymphatic Filariasis?

• a) Virus

• b) Protozoa

• c) Nematode worm

• d) Bacterium

19. The larval stage of Mansonia mosquitoes is unique because:

• a) It develops in tree holes

• b) It attaches to aquatic plants for respiration

• c) It lives only in saltwater

• d) It does not require water for development

20. What is the major symptom of chronic Lymphatic Filariasis?

• a) Rash with itching

• b) Muscle spasms

• c) Severe headaches

• d) Elephantiasis (severe swelling of limbs)

21. How is Lymphatic Filariasis diagnosed?

• a) Stool microscopy

• b) Blood smear for microfilariae

• c) X-ray scan

• d) MRI imaging

22. Which of the following is a common treatment for Lymphatic Filariasis?

• a) Ivermectin and Albendazole

• b) Penicillin

• c) Chloroquine

• d) Oseltamivir

Mosquito Control Methods

23. What is an example of a biological control for mosquitoes?

• a) Spraying insecticides

• b) Releasing sterile male mosquitoes

• c) Using bed nets

• d) Eliminating stagnant water

24. Which of the following chemicals is commonly used in fogging for mosquito control?

• a) Penicillin

• b) Malathion

• c) Amoxicillin

• d) Paracetamol

25. Which method is best for permanently eliminating mosquito breeding sites?

• a) Mechanical control

• b) Environmental management

• c) Chemical control

• d) Biological control

26. Which factor contributes to the effectiveness of insecticide-treated bed nets?

• a) They prevent mosquitoes from entering the house

• b) They kill mosquitoes upon contact

• c) They reduce the need for vaccines

• d) They eliminate all mosquito populations

27. What is an advantage of biological mosquito control?

• a) It is cost-effective but environmentally harmful

• b) It is effective but toxic to humans

• c) It is environmentally friendly but less effective

• d) It eliminates all mosquito species permanently

28. Which mosquito control method is NOT environmentally friendly?

• a) Bed nets

• b) Biological control

• c) Chemical control

• d) Source reduction

29. Integrated vector control includes:

• a) Using only one control method

• b) Combining several control strategies for effective mosquito management

• c) Eliminating all mosquitoes worldwide

• d) Using only natural predators

30. What is the most effective long-term approach to controlling mosquito-borne diseases?

• a) Only spraying insecticides

• b) Relying on natural immunity

• c) Combining vaccination, source reduction, and vector control measures

• d) Only using medication for infected individuals

Answer Key

1 c 2. c 3. b 4. a 5. a 6. c 7. c 8. c 9. b 10. b

11 c 12. b 13. b 14. c 15. b 16. c 17. c 18. c 19. b 20. d

21 b 22. a 23. b 24. b 25. b 26. b 27. c 28. c 29. b 30. c