Sandbox:Filariasis pathogenesis: Difference between revisions

Revision as of 14:50, 27 June 2017

Type of filariasis	Causative nematode	Vectors	Life cycle	Comments
Lymphatic filariasis	Wuchereria bancrofti	Culex as C. pipiens Aedes as A. aegypti Anopheles as A. arabinensis Coquillettidia.as C. juxtamansonia	Infected mosquito bite introduces the third stage larva onto the skin and then enters to the blood through the wound. The larvae reside in the lymphatic vessels and mature to adult worms. Adult worm produce sheathed microfiliae that migrate to lymph and blood. They have nocturnal periodicity. Another mosquito ingests the microfiliae. The microfilariae lose their sheaths and work their way through the wall of the proventriculus and cardiac portion of the midgut to reach the thoracic muscles Microfiliae grow up inside the mosquito till third stage larvae. In another bite to a host skin the mosquito introduces the larvae onto the skin.	The difference between the nematodes causing lymphatic filariasis is in the shape and size of the worm. The Brugia worms are similar to the W. bancrofti but smaller.
Lymphatic filariasis	Brugia timori and Brugia malayi	Mansonia Aedes
Subcutaneous filariasis	Loa loa filaria	Chrysops C. silacea C. dimidiata
	Mansonella streptocerca
	Onchocerca volvulus
Serous cavity filariasis	Mansonella ozzardi
Serous cavity filariasis	Mansonella perstans

Life cycles of the roundworms causing filariasis:

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 | rowspan="2" |[[Image:W bancrofti LifeCycle.gif|350 px|center]]
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-* The difference between the different nematodes causing lymphatic filariasis is in the shape and size of the worm.
+* The difference between the nematodes causing lymphatic filariasis is in the shape and size of the worm.
 * The Brugia worms are similar to the W. bancrofti but smaller.
 |-