Medical MCQ-A 6-year old child who presented with perianal pruritus, excoriation of skin and nocturnal enuresis was found to be infected with a parasite causing autoinfection. The infective form of parasite for humans is the -

A 6-year old child who presented with perianal pruritus, excoriation of skin and nocturnal enuresis was found to be infected with a parasite causing autoinfection. The infective form of parasite for humans is the –

Filariform larvae

Embryonated egg

Adult female

Adult male

Question Category:

Medicine

Correct Answer:

Embryonated egg

Description:

Enterobius vermicularus mainly affects children. The gravid female worm lays ova around the anus ,causing itching especially at night .The ova are often carried to the mouth on the fingers & so re-infection or human to human infection takes place. Reference: Harrison20th edition pg 1120

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