There are three different filarial species that can cause lymphatic filariasis in humans. Most of the infections worldwide are caused by Wuchereria bancrofti. In Asia, the disease can also be caused by Brugia malayi and Brugia timori. The infection spreads from person to person by mosquito bites.
What are the characteristics of Wuchereria bancrofti?
CHARACTERISTICS: Wuchereria bancrofti is a filarial nematode that, as an adult, is a thread-like worm(1,2,3). The female nematodes are 10 cm long and 0.2 mm wide, while the males are only about 4 cm long(1,3).
Where is Wuchereria bancrofti found in the world?
Wuchereria bancrofti, occurring in tropical Africa, parts of Central and South America, as well in South-East Asia, Brugia malayi, occurring in South and South-East Asia, as well as Brugia timori (occurring on the island of Timor) are the causative agents of lymphatic filarioses.
Do Wuchereria bancrofti lay eggs?
Eggs: The eggs average 40 by 25 μm in size. They lack a true shell, instead being enclosed in a membrane which stretches to form a sheath over the microfilaria (embryo). Microfilariae: The embryo itself averages 290 μm by 6-7 μm, though the sheath surrounding it is slightly larger.
Is wuchereria a free living animal?
While many bacteria are free-living, many others form symbiotic relationships of commensalistic, mutualistic, or parasitic nature. The role of insects in the transmission of protozoans such as Plasmodium, Leishmania, and Trypanosoma and nematodes such as Wuchereria, Onchocerca, and Brugia has already been discussed.
What is elephant foot disease?
Elephantiasis, also known as lymphatic filariasis, is a very rare condition that’s spread by mosquitoes. The common name is often used because if you have it, your arms and legs can swell and become much bigger than they should be. Your sex organs and breasts may also swell up.
How long are filarial worms?
They develop in adults that commonly reside in the lymphatics . The female worms measure 80 to 100 mm in length and 0.24 to 0.30 mm in diameter, while the males measure about 40 mm by . 1 mm.
Is wuchereria Bancrofti a zoonotic disease?
Wuchereria bancrofti, Brugia malayi, and B. timori are considered human parasites as animal reservoirs are of minor epidemiologic importance or absent; felid species and some primates are the primary reservoir hosts of zoonotic B.
What is filaria test?
The standard method for diagnosing active infection is the identification of microfilariae in a blood smear by microscopic examination. The microfilariae that cause lymphatic filariasis circulate in the blood at night (called nocturnal periodicity).
How is filariasis detected?
What type of worm is Wuchereria bancrofti?
Wuchereria bancrofti is a filarial nematode worm. Adult Wuchereria bancrofti lives in lymphatic vessels and lymph nodes of human and cause lymphatic filariasis. It causes diseases together with Brugia malayi and B. timori.
What is the pathophysiology of winwuchereria bancrofti?
Wuchereria bancrofti is a human parasitic worm (Filariworm) that is the major cause of lymphatic filariasis. It is one of the three parasitic worms, together with Brugia malayi and B. timori, that infect the lymphatic system to cause lymphatic filariasis. These filarial worms are spread by a variety…
What is Bancroft’s filariasis or elephantiasis?
Wuchereria bancrofti is also known as Bancroft’s filarial, and the diseases and conditions associated with it are known as Bancroft’s filariasis or elephantiasis. Wuchereria bancrofti is thought to have originated in the second millennium BC.
What are the hosts of winwuchereria bancrofti?
Wuchereria bancrofti passes its life cycle in two hosts: Human and mosquito.
