ToxocariasisToxocaraToxocara canisLarva Migrans, VisceralSeroepidemiologic StudiesAntibodies, HelminthEye Infections, ParasiticCentral Nervous System HelminthiasisLarva MigransAscariasisHIV SeroprevalenceAntigens, HelminthEnzyme-Linked Immunosorbent AssayThiabendazoleEosinophiliaChild, AbandonedPicaAnthelminticsImmunoglobulin GFood ParasitologyAlbendazoleAscaris lumbricoidesChoroid HemorrhageDogsArgentinaZoonosesAntibodies, ViralBrazilPrevalence