A parasitic infection caused by worms found in domestic animals. In humans nematode larvae enter the portal system from the small intestine and disseminate in visceral organs causing inflammatory reactions. Signs and symptoms include eosinophilia, hepatomegaly, splenomegaly, and lung infections. The disease is Monarch Disease Ontology term MONDO_0005988 (toxocariasis). Also known as: Toxocara caused disease or disorder, Toxocara disease or disorder, Toxocara infection, Toxocara infectious disease, infection by Toxascaris, visceral larva migrans.