ToxocariasisToxocaraToxocara canisLarva Migrans, VisceralAntibodies, HelminthEye Infections, ParasiticCentral Nervous System HelminthiasisLarva MigransAscariasisAntigens, HelminthSeroepidemiologic StudiesThiabendazoleEosinophiliaPicaChild, AbandonedNematodaAnthelminticsEnzyme-Linked Immunosorbent AssayAlbendazoleAscaris lumbricoidesChoroid HemorrhageFood ParasitologyHelminth ProteinsDogsArgentina