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Which of the following is the causative agent of lymphatic filariasis?

Which of the following is the causative agent of lymphatic filariasis? Correct Answer Wuchereria bancrofti

Concept:-

  • Lymphatic filariasis: it is a parasitic disease caused by an infection with roundworms of the Filarioidea type. These are spread by blood-feeding black flies and mosquitoes.
  • The causative agents of lymphatic filariasis (LF) include the mosquito-borne filarial nematodes Wuchereria bancrofti, Brugia malayi, B. timori an estimated 90% of LF cases are caused by W. bancrofti (Bancroftian filariasis).
  • This disease belongs to the group of diseases called helminthiasis. Eight known filarial nematodes use humans as their definitive hosts.

Explanation:

Wuchereria bancrofti:

  • It is a parasitic filarian nematode spread by a mosquito bite.
  • It is one of the three parasites that cause lymphatic filariasis, an infection of the lymphatic system by filarial worms.
  • It affects over 120 million people, primarily in Africa, South America, and other tropical countries. 
  • Blockage of lymph vessels occurs that results in intense swelling. The lower limbs of the infected person appear like the legs of an elephant, thus it is also called Elephantitis.
  • The genital organs may also get affected, leading to severe deformation.

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