TROPICAL DESEASE 7

2. FILIARISIS (W.Bancrofti and B. Malayl)

The mosquito vector of the bancrofti filaria are the species
culex,
aedes and
anopheles.
Mansoni and Anopheles serve as vector for B.Malayi's disease.
Infected mosquito transmits larvae every time it feeds on the
human host.
The adult male worm of the Bancrofti variety measures about 29 mm
and female 61 mm
B. Malayi adults are about half as long.
* These worms invade lymphatics in subcutaneous, and deep
tissues producing obstruction,
acute inflammation and
Chronic scarring.
* The gravid females release microfilaria in large number
into the lymphatics
* They eventually reach peripheral blood where further
development in the life cycle depends on their ingestion by
the appropriate mosquito vector.
The life cycle is presented above

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