Wuchereria bancrofti is transmitted by

An individual bathing in an infected pool or coming in contact with contaminated water is liable to be infected with .................. The .................... larva stick to the surface of the skin of swimmer or bather,and penetrate the skin.

Which of the following is the intermediate host and vector for the filarial worm?

Assertion $A$: Elephantiasis is a fatal disease.
Reason $R$: Filarial worms reside in the lymphatic vessels and lymph nodes.
Which option is correct for Assertion $A$ and Reason $R$?

In India, filariasis is transmitted by

Microfilariae are ingested from humans by: