Chenopodium oil is used in the treatment of:

Which of the following diseases is caused due to helminth infection?

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 $R$?

Which of the following diseases causes internal bleeding,muscular pain,fever,anaemia,and blockage of the intestinal passage?

Filarial larva can be collected from man's

Filaria is transmitted by