| intestinal parasites in metropolitan toronto day-care centres. | in 1981, 900 children (aged 3 months to 10 years) and 146 staff attending 22 day-care centres in metropolitan toronto chosen at random provided a stool specimen in a survey for intestinal parasites. of the children, 4% to 36% were infected in 20 of 22 centres. overall, 19% of the children and 14% of the staff had intestinal parasites: 8.6% and 4.0% respectively had dientamoeba fragilis, and 7.8% and 2.0% respectively had giardia lamblia. the highest prevalence of dientamebiasis was in the 7- to ... | 1984 | 6478361 |