Toxocariasis is a parasitic condition caused by the larvae of two species of Toxocara roundworms: Toxocara canis (from dogs) and Toxocara cati (from cats). Many people who are infected with Toxocara never develop any signs or symptoms of the condition. In those who do become sick, symptoms may present as:
Toxocariasis is generally spread through dirt that has been contaminated with animal feces that contain infectious Toxocara eggs. Young children and owners of dogs and cats have a higher chance of becoming infected. Visceral toxocariasis is treated with antiparasitic medications. Treatment of ocular toxocariasis is more difficult and usually consists of measures to prevent progressive damage to the eye.
Source: GARD Last updated on 05-01-20
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