Frequency of eosinophilia and risk factors and their association with Toxocara infection in schoolchildren during a health survey in the North of Lima, Peru

William H. Roldán, Yrma A. Espinoza, Arturo Atúncar, Emperatriz Ortega, América Martinez, Melissa Saravia

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

During a health survey in a primary school from the district of Carabayllo (North of Lima, Peru), 200 schoolchildren (96 male and 104 female between five to 12 years old) were randomly selected and divided in two groups (as positive or negative group), according to the serologic result of the Toxocara ELISA test from a total population of 646 schoolchildren. All children were analyzed by hematologic tests to determinate the frequency of eosinophilia and leukocytosis. Additionally, all clinical and epidemiological data were also analyzed to determine their association with toxocariasis. From group of children with positive serology, 40% had some type of eosinophilia in contrast to 19% of children with negative serology, and their association was statistically significant (OR = 2.84, p < 0.001). From all signs and symptoms evaluated, only 'dry cough' was more frequent and statistically significant in the positive serology group (OR = 2.79, p < 0.001). Almost all risk factors evaluated were highly frequent and statistically associated to the positive serology. In conclusion, the presence of eosinophilia and the risk factors evaluated in this population were frequently associated to human toxocariasis.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalRevista do Instituto de Medicina Tropical de Sao Paulo
Volume50
Issue number5
DOIs
StatePublished - Sep 2008

Bibliographical note

Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.

Keywords

  • ELISA
  • Eosinophilia
  • Risk factors
  • Toxocara
  • Toxocariasis

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