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A study on the seroprevalence of toxocariasis, using ELISA with Toxocara larval excretory-secretory antigens, was carried out on human populations in two regions of Spain. Sera from a population of 195 children from Madrid and 143 children from Santa Cruz de Tenerife (Canary Isles), showed a prevalence of 0% and 4.2% respectively. Sera from a population of 272 adults from Madrid and 803 adults from Santa Cruz de Tenerife showed a prevalence of 3.6% and 17.4%. Reasons for these differences in the seroprevalence of Toxocara in the different age groups from the two regions are discussed.
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Fenoy et al. (1996) studied this question.
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