A) Microfilaria
B) 1st stage larva
C) 2nd stage larva
D) 3rd stage larva
Correct Answer: D
Solution :
Wucherena or filarial worm is a diagenetic parasite. Its primary host is human and Culex mosquito is the intermediate host. When a mosquito bites an infected person, microfilarial or first stage juvenile are picked up. Inside the mosquito muscles, microfilariae transform into infectious parasite or third stage juvenile which are deposited near the site of mosquito. When this mosquito bites a healthy person, third stage juvenile or infectious parasite penetrates through the punctured skin and reach the human lymphatic system.
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