Serological evidence of toxocariasis in patients from Spain with a clinical suspicion of visceral larva migrans

Sera from patients with clinical characteristics of toxocariasis were assayed using the ELISA method and larval excretory-secretory antigen. Four hundred and seven samples of Toxocara serology were received at the laboratory of Ciudad Sanitaria Juan Canalejo Hospital of Corunna, Spain, from 1984 to 1989. Of these, 30 were from adults, 332 from children and 45 from patients of unknown age, resulting in Toxocara seroprevalences of 23.3%, 32.8% and 17.7% respectively. The reasons for these serological differences in the rural and urban areas of Galicia, Spain are discussed.