Microfilaria occurs in the peripheral blood of human beings during:

Internal bleeding,fever,muscular pain = $Ascariasis$ :: abdominal pain,constipation and blockage of the intestinal passage = ?

The human liver fluke depends on two intermediate hosts to complete its life cycle. Identify the names of these hosts.

Elephantiasis (filariasis) is caused by which of the following?

Match the symptoms of the diseases with their respective causative conditions:
Symptoms of Ascariasis $- P$
Symptoms of Filariasis $- Q$
$I -$ Chronic inflammation of lymphatic vessels
$II -$ Internal bleeding,muscular pain
$III -$ Fever,anemia,and blockage of the intestinal passage
$IV -$ Genital organs are often affected,leading to deformities
$\quad\quad P\quad Q$

Which of the following diseases is not transmitted by a mosquito vector?