SciELO - Scientific Electronic Library Online

vol.34 número2Atorvastatin protects GABAergic and dopaminergic neurons in the nigrostriatal system in an experimental rat model of transient focal cerebral ischemiaPreliminary evaluation of the commercial kit Chagas ( Trypanosoma cruzi ) IgG-ELISA ® in Colombian individuals índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados



Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google



versão impressa ISSN 0120-4157


LONDONO-FRANCO, Ángela Liliana; LOAIZA-HERRERA, Juliana; LORA-SUAREZ, Fabiana María  e  GOMEZ-MARIN, Jorge Enrique. Blastocystis sp . frequency and sources among children from 0 to 5 years of age attending public day care centers in Calarcá, Colombia . Biomédica [online]. 2014, vol.34, n.2, pp.218-227. ISSN 0120-4157.

Introduction: There are no reports of the potential sources of Blastocystis sp . in Colombia. Objectives: To estimate the frequency of Blastocystis sp . and explore possible associations among infection, clinical manifestations and environmental sources. Materials and methods: A descriptive study was conducted; a representative sample was calculated from a population of 1,993 children less than 5 years old of the lowest socioeconomic levels (1 and 2) attending day care centers in Calarcá, Colombia. The calculated sample size was 275 children, who were selected randomly in 10 % of the centers. Stool testing, questionnaires and sampling to identify the parasite in feces, nails, pets and environmental sources, were performed. Fresh preparations were made with 1% iodine solution, and a concentration technique with formalin-ether was used. Prevalence and odd ratios were estimated; the chi-square test was utilized for qualitative variables, and Student´s t for the quantitative ones. Results: The prevalence of infection in children was of 57.5%. A statistically significant association was found between the Blastocystis sp . positive stool tests and the presence of the parasite in containers of sugar cane beverage (OR=1.70; 95% CI: 1.05-2.79), wood or ground floors (OR=3.43; 95% CI: 1.12-10.48) and in foods other than bottled milk (OR=3.23; 95% CI: 1.41-4.41) . A non-significant high prevalence was found in nails (OR=1.62; 95% CI: 0.99-2.67), as well as a significantly higher prevalence of diarrhea (OR=1.95; 95% CI: 0.99-2.77) in children with Blastocystis sp . (45%) as compared with those without the parasite (33%; p<0.05). Conclusions: Blastocystis sp . showed a significant association with diarrhea symptoms in children 0 to 5 years old and was widely distributed in the environment and in water. It is necessary to determine if there are specific hosts with pathogenic potential through molecular techniques.

Palavras-chave : Blastocystis; intestinal diseases; parasitic; food contamination; drinking water; diarrhea; child; Colombia.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )