Medical MCQ-A 20 year old man presents with swelling of left lower limb and hydrocoele. All of the following may be the causative agent EXCEPT:

A 20 year old man presents with swelling of left lower limb and hydrocoele. All of the following may be the causative agent EXCEPT:

Brugia malayi

Brugia timoria

Wuchereria bancrofti

Onchocerca volvulus

Question Category:

Microbiology

Correct Answer:

Onchocerca volvulus

Description:

Ans. (d) Onchocerca volvulusRef: Diagnostic medical parasitology 3rd/275, Park 19th /221* Onchocerca volvulus results in river blindness and subcutaneous nodules.* "Lymphatic filariasis" covers infection with three closely related nematode worms - W.Bancrofti, B. Malayi and B. timoria.* All three infections are transmitted to man by the bites of infective mosquitoes.* All three parasites have basically similar life cycles in man- adult worms living in lymphatic vessels whilst their offspring, the microfilariae circulate in peripheral bloodand are available to infect mosquito vectors when they come to feed.Also Know* Diethylcarbamazine (DEC) is the drug of choice for filariasis.* Ivermectin is the drug of choice for Onchocerca volvulus

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