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Wednesday, March 30, 2011

FASCIOLOPSIASIS

Fasciolopsis buski is the largest fluke to infect man.
 The adults 2-7.5 cm long, inhabit the small intestine of man, pigs and dogs. The infection is common in central and S.China and among Chinese in S.E.Asia. It is spread from ova passed in the faeces in to water. The intermediate hosts are snails. Man becomes infected by ingesting metacercariae encysted on water plants particularly when they are peeled with the teeth.
Clinical features
Light infections are symptomless. Heavy infections give rise to epigastric pain and loose motions. Very heavy infections may be fatal. The diagnosis is made by detecting ova or adult flukes in the faeces.
Management
Praziquantel is given in a single dos of 25 mg/kg.
Prevention
This is by the proper disposal of faeces. Edible water plants can be made safe by immersing them in boiling water.

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