[Toxocara canis (Nematoda) and toxocariasis of animals and humans].

Some aspects of dog toxocarosis and syndrome of visceral larva migrans in human toxocarosis, particularly in children were presented. In detail the morphological characters and biology of Toxocara canis, its pathogenicity, ways of invasions as well as conditions favouring the spreading of parasites were discussed. Attention was paid to the efficacy of diagnosis of invasions, treatment and prophylaxis. The current toxocarosis threat was analysed and epidemiological prognosis was moved forward.