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      Parasitosis intestinales en niños de edad preescolar y escolar: situación actual en poblaciones urbanas, periurbanas y rurales en Brandsen, Buenos Aires, Argentina Translated title: INTESTINAL PARASITES IN PRESCHOOL AND SCHOOL AGE CHILDREN: CURRENT SITUATION IN URBAN, PERIURBAN AND RURAL POPULATIONS IN BRANDSEN, BUENOS AIRES ARGENTINA

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          Abstract

          El presente estudio describe las parasitosis más frecuentes en los niños de edad preescolar y escolar y establece las diferencias entre las zonas urbana (U), periurbana (PU) y rural (R) del Partido de Brandsen, Buenos Aires, Argentina. Se procesaron 119 muestras de materia fecal y escobillado anal de niños entre 1 y 14 años. Se utilizaron las técnicas de sedimentación (Ritchie) y flotación (Willis). El 63.9% resultó parasitado; el mayor porcentaje de infectados se encontró en PU (80,8%); seguido por R (63,4%) y por U (55,8%). Las comparaciones entre prevalencias indicaron diferencias significativas sólo entre PU y U (p = 0,05; OR = 0,30; IC95%: 0,08-1,00). No se hallaron diferencias significativas entre sexos ni entre individuos parasitados y no parasitados en cada una de las áreas (p > 0,05). Se identificaron E. vermicularis (U: 28,8%; PU: 30,8%; R: 39%), B. hominis (U: 26,9%; PU: 46,2%;R: 31,7%), E.coli(XJ: 11,5%;PU: 15,4%; R: 9,8%); G. lamblia (U: 9,6%; PU: 34,6%; R: 7,3%); A. lumbricoides (U: 9,6%; PU: 19,2%; R: 0%), T. trichiura (U: 9,6%; PU: 19,2%; R: 0%); E. hominis (U: 1,9%; PU: 0%; R: 2,4%); E. nana (U: 0%; PU: 7,7%; R: 4,9%) e /. butschlii (U: 0%; PU: 3,8%; R: 0%). Sólo hubo diferencias significativas entre las prevalencias de G. lamblia en U y PU (p < 0,05; OR = 0,20; IC95%: 0,05-0,8) y entre PU y R (p < 0,05; OR = 6,71; IC95%: 1,40-42). Se observaron diferencias significativas entre los porcentajes de mono y poliparasitismo en U (p < 0,05; OR = 4,48; IC95%: 1,18-18,82) y en R (p < 0,01; OR = 10,39; IC95%: 2,36-51,99). En PU se registró el mayor valor de poliparasitismo (38,1%). La mayor concentración de parásitos en PU, caracterizada por las condiciones socio-ambientales más desfavorables, sugeriría el impacto negativo de la urbanización cuando no es acompañado de la provisión de servicios de infraestructura básicos

          Translated abstract

          The present study describes the parasitoses in preschool and schoolchildren and the differences among urban (U), periurban (PU) and rural (R) areas of the Partido of Brandsen, Buenos Aires, Argentina. Faecal samples and anal brushed were collected in 119 children between 1 and 14 years old. The sedimentation (Ritchie) and flotation (Willis) techniques were used. Sixty three percent of the samples were parasited. The highest percentage of infection was seen in PU (80,8%), followed by R (63,4%) and U (55,8%). The comparisons among prevalences only indicated significant differences between PU and U (p=0,05; OR = 0,30; IC95%: 0,08-1,00). We identified Enterobius vermicularis (U: 28,8%; PU: 30,8%; R: 39%), Blastocystis hominis (U: 26,9%; PU: 46,2%; R: 31,7%), Entamoeba coli (U: 11,5%; PU: 15,4%; R: 9,8%); Giardia lamblia (U: 9,6%; PU: 34,6%; R: 7,3%); Ascaris lumbricoides (U: 9,6%; PU: 19,2%; R: 0%), T. trichiura (U: 9,6%; PU: 19,2%; R: 0%); Enteromonas hominis (U: 1,9%; PU: 0%; R: 2,4%); E. nana (U: 0%; PU: 7,7%; R: 4,9%); lodamoeba butschlii (U: 0%; PU: 3,8%; R: 0%). Only G. lamblia was significantly higher in PU compared to U (p < 0,05; OR = 0,20; IC95%: 0,05-0,8) and R (p < 0,05; OR = 6,71; IC95%: 1,40-42). Significant differences were observed between percentages of mono and poliparasitism in U(p < 0,05; OR = 4,48; IC95%: 1,18-18,82) and R (p < 0,01; OR = 10,39; IC95%: 2,36-51,99). PU had the highest value of poliparasitism (38,1%). The greatest level of parasitism in the periurban, which is characterized by the poorest living conditions, would suggest the negative impact of urbanization when it is not accompanied by the provision of basic infrastructure services

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          Malnutrition and parasitic helminth infections

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            Distribution of intestinal parasitoses in relation to environmental and sociocultural parameters in La Plata, Argentina.

            Environmental parameters influencing the distribution of parasite species in three neighbourhoods of differing socioeconomic conditions in La Plata, Argentina were analysed. Coproparasitological screenings were performed in children up to 14 years old from a marginal zone (100), a suburban neighbourhood (101), and an urban area (91) in 1999--2000. The presence of parasite species in environmental samples (water and soil) and the degree of association among parasite communities was documented and evaluated. The prevalence of infection in each population was 73.0%, 54.4% and 35.2%, respectively. The frequencies of helminths and pathogenic protozoa were both higher in the marginal zone, where sanitary and environmental conditions were significantly inferior compared with the other zones. The high prevalence of intestinal parasites in this infantile population was related to parasitic contamination of the soil and water sources in addition to deficient sanitary and sociocultural conditions. Calculation of an equitability index revealed that the specific richness was less equitable once socioeconomic conditions and hygienic practices were improved. This study demonstrates the need to implement management practices for the control of intestinal parasitoses in accordance with the environmental and sociocultural characteristics of a given ecosystem.
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              Predictors and nutritional consequences of intestinal parasitic infections in rural Ecuadorian children.

              The study investigated the prevalence, risk factors, and nutritional consequences of intestinal parasitic infections (IPI) in rural Ecuadorian children. A total of 244 children aged 0.2-14 years were studied. The data were collected using a structured questionnaire, anthropometry, and laboratory analysis of blood and fecal samples. The results showed that 90 per cent of the subjects were infected with at least one pathogenic IPI: 51 per cent with helminths, 37.6 per cent with protozoa, and 21.4 per cent with both. Giardia-infected children had a risk for stunted growth that was twice that of other children (51.7 vs. 33.1 per cent; OR = 2.16, 95 per cent CI = 1.13-4.15; p = 0.01). They also had significantly reduced mean hemoglobin levels compared with their non-infected counterparts (11.8 +/- 1.5 vs. 12.2 +/- 1.4 g/dl; p = 0.023). However, the proportion diagnosed with iron-deficiency anemia was slightly, but not significantly, increased (29.4 vs. 24.3 per cent). The most consistent predictor of Giardia and other protozoal IPI risk was a high intra-/peri-domicilliary concentration of domestic animals. Children who lived in such households had an infection risk that was two to five times greater than that of their non-infected counterparts. The data indicate that Giardia intestinalis infection has an adverse impact on child linear growth and hemoglobin. They also suggest that domestic animals may be an important reservoir for Giardia and other intestinal protozoal infections observed in the Ecuadorian children studied.
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                Author and article information

                Journal
                parasitol
                Parasitología latinoamericana
                Parasitol. latinoam.
                Sociedad Chilena de Parasitología (Santiago, , Chile )
                0717-7712
                June 2007
                : 62
                : 1-2
                : 54-60
                Affiliations
                [01] Buenos Aires orgnameUNLP orgdiv1Facultad de Ciencias Naturales y Museo orgdiv2CONICET Argentina lorenazonta@ 123456cepave.edu.ar
                [02] orgnameUNLP orgdiv1Facultad de Ciencias Naturales y Museo orgdiv2Centro de Investigaciones en Genética Básica y Aplicada Argentina
                Article
                S0717-77122007000100009 S0717-7712(07)06200109
                10.4067/S0717-77122007000100009
                41b1fd6a-e625-4bc2-8b3e-ac66dd901c99

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 33, Pages: 7
                Product

                SciELO Chile

                Categories
                ARTICULOS ORIGINALES

                Human parasitism,intestinal parasites,survey,Brandsen-Argentina

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