Background & objectives: Intestinal parasitic infections are the most health threatening agents around the world, developing countries in particular. The aim of the present study was to determine the prevalence of Giardia lamblia and Enterobiusvermicularis among the children of kindergartens in Shahroud, Iran.

  Methods: In this descriptive cross sectional study from 811 children of 15 kindergartens fecal samples were collected by way of census in 2013. Thisworkwas conductedwith education of parentsandtheirfull consent . All samples were examined at Central Laboratory of Shahroud University of Medical Sciences based on formalin ethyl acetate method. In addition direct smear was also applied for the watery and loose samples. Finally, collected scotch tape samples were examined microscopically. Descriptive statistics indices including means , standard deviations, and frequencieswere used for reporting the results .

  Results: The overall prevalence of intestinal parasitic infections among the children of Shahroud's kindergartens was 22.2%. Also, the prevalence of the infections among males and females were 24.1% and 20.4%, respectively. The highest prevalence of infections were belongs to Giardia lamblia and Endolimax nana (7.4 and 4.8%), respectively. Also, Trichomonashominis had the lowest prevalence (0.5%). Prevalence of infection caused by Enterobiusvermicularis was (2.1%), the average agesof children infected by Enterobiusvermicularis and Giardia were 5.1 and 4.7, respectively. There was no difference in order of parasites infection on the basis of gender.

  Conclusion: The prevalence of infection caused by Enterobiusvermicularis among the children was considerably low. Also, the prevalence of Giardia lamblia was lower than the average of its prevalence in countrywide scale. Although the health services have been effectively enhanced, the prevalence of intestinal parasites, Giardia lamblia in particular, is still problematic.