[Toxocariasis--a current clinical and diagnostic problem].

Toxocariasis is zoonotic disease caused by worms Toxocara canis and Toxocara cati. Human is its paratenic host. There are some clinical forms: Visceral larva migrans, cerebral larva migrans, ocular larva migrans and covert toxocariasis. At the present time diagnostics of toxocariasis is very difficult due to polymorphism of clinical symptoms and low specificity of laboratory tests.