Parasitic infections in a pediatric population

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Abstract
We studied the frequency of parasitic infection and associated clinical symptoms in children who attended general pediatric and dental clinics at UCLA. Parasites were detected in stool specimens of 40 (38%) of the 1-4 children completing the study. Protozoan parasites were recovered in 39 (38%); one child had whipworm eggs. Parasites included Dientamoeba fragilis in 22 (21%) children and Giardia lamblia in 18 (17%) children; commensals were observed in 15 (14%) children. Parasitic infection was more frequent in younger children, those with a history of immigration or foreign travel and those attending a day care center. A significant proportion of children with parasites had vague gastrointestinal complaints; however, parasites had not been considered as the etiologic agent by the parent or child's physician. Anorexia, irritability and gas were frequent in children with G. lamblia; abdominal pain was more frequent in those with D fragilis. Intestinal parasitic infection should be considered in children with vague gastrointestional complaints, particularly those in endemic areas, with a history of foreign travel or immigration or attending a day care center. Siblings of infected children should have stool examination even if asymptomatic.

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