Recuperación fecal de Rotavirus y otros enteropatógenos en lactantes menores de un año con diarrea aguda

Abstract

Fecal identification of rotavirus, Salmonella, Shigella. Escherichia coli (classis serotypes and invasiveness), and parasites was carried out in infants admitted for acute diarrhea during winter 1980 (Period I, N = 40) and summer 1980-81 (Period II, X = 38). Rotavinis was detected in 10% and 5.3% of fecal samples during Period I and II respectively. Bacterial recovery was .38.5% and 60.5% in the same periods. Giardia lamblia was not detected and Entamoeba histolytica was found in one case (Pericxl II). Clinical presentation of diarrhea was similar to that described in the literature. It was not possible to identify those patients excreting rotavirus in their feces by clinical parameters.La diarrea aguda constituye un probleina de salud frecuente en nuestropais. La capacidad para identifiear los diversos tipos de agentes patogenos que posee el servicio asistencial que reeibe al enfenno con esta condicion detenuina, en la practica, el criterio de tratamiento a seguir con el paciente. Por otra parte, el inanejo clinico ma.s o menos acertado hace que la evolucion del cuadro se acorte o se alargue y que el impacto nutricional en el individno sea de mayor o me nor importan--cia.Nuevas tecnologias desarrolladas en la decada del 70 han pennitido identifiear algunos vims capaees de produeir dianea aguda en el humario. 1 ' 6 Entre estos, los rotavirus parecen ser los de mayor importancia epidemiologica.' 10 Se les ha encontrado en todos los paises en que se han buseado y son los vims aislados con mayor frecuencia en las heces de sujetos eon diarrea aguda. La ineidencia de diarrea por rotavirus varia de un pais a otro y en las disthitas estaeiones del ano, siendo mas fre-

Enterotoxigenic Escherichia coli in a population of infants with diarrhea in Chile

“…The prevalence of isolation is influenced by the age of the child and the time of year (3,5,19,51). Similar investigations in Chile have supported the relevance of rotavirus as an etiologic agent of diarrhea and of the uncertain etiologic role played by the classic serotypes of enteropathogenic E. coli (22,41,55). A recent study done in Chile determined that ETEC strains were isolated from 23.6% of infants with diarrhea, but the incidence of only LT and LT-ST strains was studied (43).…”

“…In summary, our data suggest that ETEC strains may be an important cause of diarrhea among infants in Chile, findings which could be extended to the etiology of diarrhea in travellers to this area. Studies in progress with E. coli strains isolated from diseased and normal infants and from adults will determine their relevance in diarrheal disease in comparison with viral and parasitic agents which are also important causes of acute diarrhea in Chile (51,55).…”