ToxocariasisToxocaraToxocara canisLarva Migrans, VisceralAntibodies, HelminthEye Infections, ParasiticCentral Nervous System HelminthiasisLarva MigransAscariasisAntigens, HelminthSeroepidemiologic StudiesEosinophiliaThiabendazolePicaChild, AbandonedEnzyme-Linked Immunosorbent AssayAnthelminticsAlbendazoleAscaris lumbricoidesChoroid HemorrhageFood ParasitologyDogsArgentinaImmunoglobulin G