Last Updated on Nov 05, 2019

What are the Causes of Filariasis?

Eight different thread-like nematodes cause filariasis. Most cases of filaria are caused by the parasite known as Wuchereria bancrofti

Wuchereria bancrofti Parasite Causes Filariasis

Eight different thread-like nematodes cause filariasis-

  • Lymphatic Filariasis (Elephantiasis) is caused by Wuchereria bancrofti, Brugia malayi, and Brugia timori.
  • Subcutaneous Filariasis is caused by Loa loa (the eye worm), Mansonella streptocerca, and Onchocerca volvulus.
  • Serous Cavity Filariasis is caused by the worms Mansonella perstans and Mansonella ozzardi.

Most cases of filariasis are caused by the parasite known as Wuchereria bancrofti; The Culex, Aedes or Anopheles mosquitoes transmit the disease. Another parasite called Brugia malayi that causes filariasis is transmitted by the vector Mansonia and Anopheles mosquitoes.

Culex, Aedes or Anopheles Mosquitoes Transmit Filariasis

When an infected mosquito bites a healthy person, the larvae called microfilariae move into the lymphatics and lymph nodes. Here, they develop into adult worms and may persist for years.

The adult parasite, in turn, produces more microfilariae. These microfilariae circulate in the peripheral blood usually in the night, and are sucked by the mosquitoes during a bite. The same cycle is then repeated in another healthy individual.(3)


  1. Filariasis - Wikipedia - (
  2. Lymphatic Filariasis - (
  3. Blood Lymphatic Disease - Filariasis - (
  4. Filariasis: Symptoms, Causes and Management - (
  5. Filariasis - (
  6. Filaria - (
  7. Parasites - Lymphatic Filariasis - (


Mah1985 Tuesday, March 1, 2016

I have a swollen legs since I am 10 years old as it increasing gradually till now am 30 years. i under go filariasis midnight test when i was 11 and the results became negative. deciding to take another test at this moment and the result came positive. what is your advice for this? what is the best medicine I should take to recover?

vikash09 Sunday, November 1, 2015

i have problem in my scrotem it is getting swolen tightly and give me pain very much after taking antibiotics i get recover give me prescribed dr and suggest

charansapcrm Wednesday, June 10, 2015

My Mothers age is 58 years old. As per doctor's assumption she is suffering from fialria disease. Her one of leg is very heavy which is 3 times the other difficult . Not able to sit in floor also very difficult to walk. Before 4 months , she has suffered from kidney probelm , where dialysis has done 7 times . After that the legs are swollen. We want to know where the treatment and diagnosis is happening

jahufersadique Saturday, September 6, 2014

Iam 55 yrs.old male. colostomy surgery done for rectum ca in 2005. Now suffering with filariasis. Scrotum swollen and somtimes discharge secretion. Hetrazan - 100 mg. tablets 3 tim es prescribed. Can I come for further treatment

sony13 Monday, July 21, 2014

i am 30 years old, I am not sure but i think i am suffering from filaria, because last 6 month my left hand and breast very tight and swelling so plz give me suggestion.

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