Intestinal parasitosis, undernutrition and socio-environmental factors in schoolchildren from Clorinda Formosa, Argentina
Parasitosis intestinal, desnutrición y factores socio-ambientales en niños escolares de Clorinda Formosa, Argentina
DOI:
https://doi.org/10.15446/rsap.v21n2.73692Keywords:
Parasites, malnutrition, environment, children (en)Parásitos, malnutrición, ambiente, niños (es)
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Objective To evaluate intestinal parasitosis, undernutrition and socio-environmental factors in schoolchildren from Clorinda (Formosa, Argentina).
Materials and Methods Serial fecal samples and anal swabs of 114 schoolchildren, canine feces and soil samples were analyzed. Body weight and height of 215 schoolchildren were measured and undernutrition was estimated according to the World Health Organization criteria. Socio-environmental variables were assessed by means of a semi-structured questionnaire.
Results 78.1% of children were infected by at least one of the 12 species identified and 70.8% had multiple parasitic infections. Blastocystis sp., Giardia lamblia and Enterobius vermicularis were the most prevalent. Additionally, 17.5% of children were infected by at least one geohelminth (e.g. Ascaris lumbricoides, Trichuris trichiura, hookworms). 64.3%
of canine of canine feces were positive and six parasitic species were found; the most frequent were Ancylostoma caninum, Uncinaria stenocephala and G. lamblia. Furthermore, 37.5% of soil samples showed zoonotic parasites (i.e. Ascaris sp., Toxocara sp.). Finally, 10.0% of the children were undernourished and 85.7% of them had parasites. The risk for parasitosis was higher in children that lived in houses with inadequate solid waste disposal and whose parents were unemployed or had temporary jobs.
Conclusions The lack of environmental sanitation, unstable employment of parents and the presence of zoonotic species were the most relevant factors observed. Consequently, these conditions result in an increase of parasitic infections and negatively influence the growth of children.
Objetivo Evaluar la parasitosis intestinal, la desnutrición y los factores socio-ambientales en escolares de Clorinda (Formosa, Argentina).
Materiales y Métodos Se analizaron muestras fecales y escobillados anales seriados de 114 escolares, heces caninas y muestras de suelo. Se midió el peso corporal y la talla de 215 escolares y se evaluó la desnutrición según los criterios de la Organización Mundial de la Salud. Las variables socio-ambientales se evaluaron mediante una encuesta semiestructurada.
Resultados El 78,1% de los niños estuvieron parasitados por al menos 1 de las 12 especies identificadas y el 70,8% presentó parasitosis múltiples. Blastocystis sp., Giardia lamblia y Enterobius vermicularis fueron las más prevalentes. Además, el 17,5% de los niños estaban infectados con al menos un geohelminto (e.g. Ascaris lumbricoides, Trichuris trichiura, ancylostomideos). El 64,3% de las heces caninas resultaron positivas y se encontraron seis especies parasitarias; las más frecuentes fueron Ancylostoma caninum, Uncinaria stenocephala y G. lamblia. Además, el 37,5% de las muestras de suelo mostraron parásitos zoonóticos (i.e. Ascaris sp., Toxocara sp.). Finalmente, el 10% de los niños estaban desnutridos y el 85,7% de ellos resultaron parasitados. El riesgo de parasitosis fue mayor en los niños que vivían en casas con eliminación inadecuada de desechos sólidos y cuyos padres estaban desempleados o tenían empleos temporales.
Conclusiones La falta de saneamiento ambiental, el empleo inestable de los padres y la presencia de especies zoonóticas fueron los factores observados más relevantes. En consecuencia, estas condiciones resultan en un aumento de las infecciones parasitarias e influyen negativamente en el crecimiento de los niños.
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