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Toxocariasis 

Toxocariasis
Chapter:
Toxocariasis
DOI:
10.1093/med/9780198729228.003.0119
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date: 17 June 2019

Toxocariasis is a zoonotic infection caused by dog or cat roundworms Toxocara canis and Toxocara cati. Two to 10% of the population in the Western world is seropositive. However, symptomatic infection is less common and also under-reported. Soil or surfaces contaminated with animal faeces are the common sources of infection. Embryonated eggs hatch in the intestine; larvae penetrate the intestinal wall and migrate to the liver and other tissues via the lymphatic and circulatory systems, and cause visceral or ocular larva migrans. Diagnosis is by serological method. Albendazole is the drug of choice, with systemic corticosteroid therapy added in severe cases. Good personal hygiene and regular de-worming of pets are essential for prevention.

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