Question

Wuchereria bancrofti is transmitted to the human body by:

• A. Housefly
• B. Anopheles
• C. Culex
• D. Aedes

Hint:

Important mosquito vectors to remember: Anopheles → Malaria, Aedes → Dengue/Chikungunya, Culex → Filariasis.

Answer 1

The Correct Option is C

Concept: Wuchereria bancrofti is a parasitic nematode that causes lymphatic filariasis (elephantiasis). The parasite is transmitted to humans through the bite of infected mosquitoes.

Step 1: Identify the transmitting vector. The primary vector responsible for transmitting Wuchereria bancrofti is the Culex mosquito, especially Culex quinquefasciatus.

Step 2: Transmission process. When an infected mosquito bites a human, the infective larvae enter the bloodstream and migrate to the lymphatic vessels.

Step 3: Effect on the body. The parasites develop into adult worms in the lymphatic system, causing blockage of lymph vessels and swelling of body parts such as legs and genitals, a condition known as elephantiasis.