Estudio comparativo de recuperación de formas parasitarias por tres diferentes métodos de enriquecimiento coproparasitológico / Comparative study of parasitic forms recuperation using three different coproparasitoscopic methods

Se analizaron 165 muestras fecales seriadas, utilizando dos métodos de sedimentación: Ritchie (R) y Carles Barthelemy (CB) y uno de flotación: Willis (W), con el fin de optimizar el diagnóstico de los parásitos intestinales y determinar la eficacia de las técnicas. Se hallaron parásitos en 119 (72,1 por ciento) de los analizados. Hubo diferencias significativas en la recuperación de protozoos (p < 0,001), observándose 81,4 por ciento (R), 77,4 por ciento (CB), y 57,8 por ciento (W). Blastocystis hominis, G.lamblia, Ascaris lumbricoides y Trichuris trichiura se recuperaron con mayor frecuencia mediante sedimentación, resultando más efectivo el método de Ritchie (p < 0,05).

A total of 165 fecal samples were analyzed, using two sedimentation methods: Ritchie (R), Carles Barthelemy (CB), and one of flotation: Willis (W), in order to optimize intestinal parasites diagnosis and to determine the techniques effectiveness. Parasites were found in 119 (72,12%) of those analyzed. Significant differences were in protozoa recovery (p < 0,001), being observed 81.4% (R), 77.4% (CB), and 57.8% (W). Blastocystis hominis, Giardia lamblia, Ascaris lumbricoides and Trichuris trichiura were recovered more frequency by means of sedimentation, being Ritchie´s method the most effective one (p < 0.05).

Enteroparasitosis en dos poblaciones periurbanas de La Plata, Argentina / Intestinal parasitosis in 2 periurban populations at La Plata, Argentina

The prevalence of intestinal parasites was studied in two urban neighborhoods with different socioecnomic conditions in La Plata, Argentina. Age, sex and enviroment factors were considered. One hundred and one hundred one children up to 14 years old were examinated by coproparasitologic analysis. Giardia lamblia was the most frequent species. Overall prevalences (73,0 and 54,4 percent), frequencies of polyparasitism (45,0 and 14,8 percent), and prevalences of helmithic infection (48,0 and 12,7 percent) were highest in the population having significantly inferior sanitary and enviromental conditions. A correlation with age was observed. It is necessary to apply management practices for the control of enteroparasitoses, in accordance with the corresponding characteristics of the enviromental and sociocultural ecosystem