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Home >> Exams >> UPSC-CMS >> UPSC CMS 2010 >> UPSC CMS 2010 Paper 1 >> Mcqs >> Medicine Mcqs >> Q20.
UPSC CMS 2010 Paper 1
UPSC CMS 2010 Paper 1 Mcqs
(Single Best Answer) Question 20: Which of the following organisms causes lymphatic filariasis ?
A) Brugia timori
B) Loa loa
C) Mansonella perstans
D) Onchocerca volvulus
Answer: A) Brugia timori
Explanation
Lymphatic Filariasis is caused by the worms Wuchereria bancrofti, Brugia malayi, and Brugia timori. These worms occupy the lymphatic system, including the lymph nodes, and in chronic cases these worms lead to the disease Elephantiasis.

Subcutaneous Filariasis is caused by Loa loa (the African eye worm), Mansonella streptocerca, Onchocerca volvulus, and Dracunculus medinensis (the guinea worm). These worms occupy the subcutaneous layer of the skin.

Serous Cavity Filariasis is caused by the worms Mansonella perstans and Mansonella ozzardi, which occupy the serous cavity of the abdomen.
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