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Wednesday, April 6, 2011

TOXOCARA CANIS

This is common intestinal worms of dogs. The ova are passed in the animal's faeces.
Children who are in close contact with infected puppies are particularly liable to ingest ova of Toxocora canis.

Clinical features
Larvae, liberated in the stomach, migrate through the body and may cause allergic phenomena such as asthma, eosinophilia and splenomegaly. The worms do not usually mature in the human host. Occasionally a granuloma develops around a dead larvae in the eye which resembles a neoplasm and may cause blindness.

Diagnosis
Serology may aid diagnosis.

Management
Larval worms are killed by diethylcarbamazine, 9-12 mg/kg daily for 3 weeks. Granulomas may require surgical treatment.

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