Question 1

Onchocerciasis is caused by:*

A. Wuchereria bancrofti

B. Onchocerca volvulus

C. Loa loa

D. Dracunculus medinensis

Question 2

River blindness is so called because:*

A. Blackflies breed in fast-flowing rivers

B. Transmission occurs via water

C. Patients develop photophobia

D. Parasite eggs are in water

Question 3

The strategy for control of onchocerciasis is:*

A. Mass drug administration of ivermectin

B. Bed nets

C. Vaccination

D. Blood transfusion screening

Question 4

Onchocerciasis is endemic in:*

A. Africa and parts of Latin America

B. Asia and Europe

C. North America only

D. Australia

Question 5

The dermatitis in onchocerciasis is due to:*

A. Allergic reaction to microfilariae

B. Fungal infection

C. Bacterial invasion

D. Vitamin deficiency

Question 6

The drug of choice for onchocerciasis is:*

A. Praziquantel

B. Ivermectin

C. Albendazole

D. Quinine

Question 7

The vector for onchocerciasis is:*

A. Tsetse fly

B. Blackfly (Simulium)

C. Sandfly

D. Mosquito

Question 8

Diagnosis of onchocerciasis is made by:*

A. Skin snip microscopy

B. Blood smear

C. Urine microscopy

D. CSF exam

Question 9

The adult worm of Onchocerca lives in:*

A. Lymphatics

B. Subcutaneous nodules (onchocercomas)

C. Intestine

D. Liver

Question 10

The major complication of onchocerciasis is:*

A. Blindness due to corneal opacities

B. Jaundice

C. Hematuria

D. Diarrhea

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