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The Scientific World Journal
Volume 2013, Article ID 572089, 4 pages
Research Article

Prevalence and Risk Factors Associated with Toxocara canis Infection in Children

1Centro Universitario Amecameca, Universidad Autónoma del Estado de México, 56900 Amecameca, MEX, Mexico
2Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana, 04960 Mexico City, DF, Mexico
3Parasitología Experimental, Instituto Nacional de Pediatría de México, 04530 Mexico City, DF, Mexico
4Facultad de Medicina, Universidad Autónoma del Estado de México, 50180 Toluca, MEX, Mexico

Received 12 April 2013; Accepted 15 May 2013

Academic Editors: G. Cancrini and E. L. Jarroll

Copyright © 2013 Camilo Romero Núñez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The objective of this study was to determine seroprevalence and identify risk factors associated with Toxocara canis infection. A clinical and epidemiological questionnaire and body mass index were used to assess the risk factors associated with human toxocariasis in 108 children with an age range of 2–16 years. Antibodies against Toxocara canis were detected using an ELISA test kit. Chi-square analysis and odds ratio (OR) were used to identify risk factors associated with Toxocara canis seropositivity. The prevalence of antibodies against Toxocara canis was greater ( ) in males than females (28.84% and 16.07%, resp.). Chi-square analysis and odds ratio revealed just one variable with and was associated with seropositivity: the possession of dogs under one year old ( ). Although not significant, the OR values suggest that other factors may be epidemiologically important for Toxocara presence such as not washing hands before meals, malnutrition, obesity, and use of public parks. Children in the age group >12 and <16 years old had higher seroprevalence to Toxocara canis (17.59%) than the >2 and <11 years old age group (4.62%). Toxocariosis infection needs to be prevented by pet deworming and hygienic measures after contact with dogs.