Soil contamination by embryonic eggs of Toxocara canis is the main source of human infection by this ascarid larvae resulting, sometimes, in the occurrence of visceral larva migrans syndrome. The objective of the present research is to determine the frequency of T. canis eggs in soil samples monthly collected in nine public places, located at the South Region of São Paulo municipality in a 18-m...

Toxocara canis, the common roundworm in the dog, can cause "visceral larva migrans" syndrome in humans, which may include generalised illness, eosinophilia, and symptoms arising from larval invasion of different organs. Of these, the clinically most important are liver, lungs, eyes and CNS. Involvement of the different parts of the CNS in human toxocaral disease has been described, but not the ...

New information indicates that toxocariasis is the most common human parasitic worm infection in the United States, affecting millions of Americans living in poverty. The infection is also highly prevalent in many developing countries and its global importance may be greatly underestimated. Toxocariasis results from zoonotic transmission of the roundworms, Toxocara canis and T. cati from dogs a...

mopolitan roundworms that infect dogs, especially puppies, and cats. T. canis infection in humans occurs by ingestion of the embryonic eggs, which are shed in the feces of infected dogs. Toxocariasis is manifested in three different syndromes: visceral larva migrans (VLM), ocular larva migrans (OLM), and covert toxocariasis (1, 2). VLM is usually a disease of children 1 to 6 year old, and it ma...