ToxocariasisToxocaraToxocara canisLarva Migrans, VisceralAntibodies, HelminthEye Infections, ParasiticCentral Nervous System HelminthiasisPrevalenceLarva MigransAscariasisAntigens, HelminthSeroepidemiologic StudiesThiabendazoleEosinophiliaPicaChild, AbandonedEnzyme-Linked Immunosorbent AssayAnthelminticsAlbendazoleAscaris lumbricoidesChoroid HemorrhageFood ParasitologyDogsArgentinaBrazilImmunoglobulin G