Abstract: “The present study was done to find out the incidence of the intestinal parasites and their prevalence among male, female and children of the outdoor patients of IBN sina hospital, Dhanmondi, Dhaka. A total of 350 stool samples were collected from different aged patients and examined from IBN Sina hospital. Four species of intestinal parasites were identified, of which two species were protozoa (Entamoeba histolytica and Giardia sp.) and two species were nematode (Ascaris lumbricoides and Trichuris trichuira). The overall prevalence of infestation was 24.28%; Entamoeba histolytica 4.85%, Giardia sp 2.28%, Ascaris lumbricoides 4.28% and Trichuris trichuira 12.85%. The highest prevalence (28%) prevalence was observed in male patients, lowest in 22.5% in female and 24% in children. The prevalence was highest (29.52%) in rainy season and lowest (21.05%) in winter season. The prevalence was highest (41.66%) in male during the month of April’10. The highest prevalence was found in 26- 35 year”

Keywords: Intestinal parasites, prevalence, outdoor patients, children.