Which of the following diseases is caused by a nematode?
A
Leprosy
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B
Filariasis
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C
Amoebiasis
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D
Poliomyelitis
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Solution
The correct option is B Filariasis
Filariasis is caused by thread-like filarial nematodes (roundworms) Wuchereria bancrofti. They infect the lymphatic vessels and block the flow of lymph that leads to the swelling of limbs which appears like a limb of elephant and thus called as elephantiasis. It can be transmitted by culex mosquito.