ToxocariasisToxocaraToxocara canisLarva Migrans, VisceralAntibodies, HelminthEye Infections, ParasiticIntestinal Diseases, ParasiticCentral Nervous System HelminthiasisParasitic DiseasesLarva MigransAscariasisProtozoan InfectionsAntigens, HelminthEosinophiliaAnthelminticsThiabendazoleAscaris lumbricoidesHelminthiasisSeroepidemiologic StudiesAlbendazoleEnzyme-Linked Immunosorbent AssayPicaChild, AbandonedHelminthsParasitic Diseases, AnimalChoroid HemorrhageParasitesFood ParasitologyIsosporaNematode InfectionsHymenolepiasisFecesPrevalenceDogsImmunoglobulin GGiardiasisCestode InfectionsArgentinaZoonoses