| Type of filariasis
|
Causative nematode
|
Vectors
|
Life cycle
|
Illustrative image
|
| 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.
- Another mosquito ingests the microfiliae.
- 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.
|
|
| Brugia timori and Brugia malayi
|
|
|
|
| Subcutaneous filariasis
|
Loa loa filaria
|
|
|
|
| Mansonella streptocerca
|
|
|
|
| Onchocerca volvulus
|
|
|
|
| Serous cavity filariasis
|
Mansonella ozzardi
|
|
|
|
| Mansonella perstans
|
|
|
|
Life cycles of the roundworms causing filariasis:
