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      Prevalencia de blastocistosis y otras parasitosis intestinales en una comunidad rural del Estado Anzoátegui, Venezuela Translated title: PREVALENCE OF BLASTOCISTOSIS AND OTHERS INTESTINAL PARASITOSES IN A RURAL COMMUNITY FROM ANZOATEGUI STATE, VENEZUELA


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          Para determinar la prevalencia de infección por Blastocystis hominis y otros parásitos intestinales en habitantes de "Tamarindo", comunidad rural del estado Anzoátegui, Venezuela, se evaluaron 138 pobladores. Una muestra fecal obtenida por evacuación espontánea de cada persona fue analizada mediante la técnica de examen directo y el método de concentración de Willis. La prevalencia de parasitosis intestinal fue de 95,7%. Los protozoarios fueron más frecuentes que los helmintos con 90,1%. B. hominis fue el parásito más común (66,7%) y no se observó diferencias de infección según el sexo y edad (p > 0,05) en las personas. El 73, 9% de las personas infectadas con este protozoo tenían además infecciones por otros parásitos o comensales.

          Translated abstract

          To determine the prevalence of Blastocystis hominis and others enteroparasites infection in "Tamarindo", rural community of Anzoategui State, 138 inhabitants were evaluated. A fecal sample was obtained from each person and analyzed by direct examination and by Willis' concentration method. The prevalence of intestinal parasitosis was 95.7% and protozoan were more frequent than helminths. Blastocystosis was the most prevalent parasitoses (66.7% )and no differences by age or sexes were observed (p > 0.05). In 73.9% of B. hominis infection cases other parasites and/or commensals were present.

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          The global burden of intestinal nematode infections--fifty years on.

          M S Chan (1997)
          Fifty years after Stoll published his 'This Wormy World' article, the global prevalence of infections with intestinal nematodes remains virtually unchanged. The main species involved are Ascaris lumbricoides, Trichuris trichiura and hookworms, and there are now approximately one billion infections with each of these, worldwide. Given these large numbers, Man-Suen Chan here focuses on attempting to quantify the disease burden caused by these infections, using a recently formulated method of calculating disability-adjusted life years (DALYs). Using a mathematical model, it is estimated that approximately 70% of this burden can be prevented in high-prevalence communities by treating schoolchildren alone. Programmes targeted at schoolchildren have been shown to be extremely cost-effective, and hence this provides a realistic approach for combating these infections in the future.
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            This wormy world.

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              Association of Blastocystis hominis with signs and symptoms of human disease.

              Purged stools from 389 patients were evaluated microscopically for the presence of Blastocystis hominis. A total of five or more B. hominis cells per 40X field were observed in 43 patients (11%), and B. hominis was the only intestinal parasite present in 23 (6%) of these patients. Of the 23 patients, 19 had symptoms which included abdominal discomfort (15 patients), anorexia (10 patients), diarrhea (9 patients), and flatus (9 patients). The remaining four patients were asymptomatic. The proportion of eosinophils in the peripheral blood ranged from 4 to 12% in 11 (58%) of the symptomatic patients. Absolute eosinophil counts were greater than 250/microliter in 8 patients and greater than 400/microliter in 5 patients. Eosinophilia was not observed in the remaining symptomatic or asymptomatic patients. This study supports the emerging concept of the role of B. hominis as an intestinal parasite causative of human disease.

                Author and article information

                Parasitología latinoamericana
                Parasitol. latinoam.
                Sociedad Chilena de Parasitología (Santiago, , Chile )
                July 2003
                : 58
                : 3-4
                : 95-100
                [01] Bolívar Bolívar orgnameUniversidad de Oriente, Núcleo Bolívar orgdiv1Escuela de Medicina orgdiv2Departamento de Parasitología y Microbiología Venezuela
                [02] Bolívar Bolívar orgnameUniversidad de Oriente, Núcleo Bolívar orgdiv1Hospital Universitário «Ruíz y Páez» orgdiv2Departamento de Medicina Venezuela
                S0717-77122003000300001 S0717-7712(03)05800301

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

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                Figures: 0, Tables: 0, Equations: 0, References: 41, Pages: 6

                SciELO Chile


                Intestinal Parasitosis,Venezuela,Prevalence,Blastocystis hominis


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