رحیم نوروزی - Dept. of Parasitology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
عباسعلی نوریان - Dept. of Parasitology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
علی هانیلو - Dept. of Parasitology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
کوروش کمالی - Dept .of Epidemiology, Faculty of Paramedical, Zanjan University of Medical Sciences, Zanjan, Iran

Background and Objective: High prevalence of parasitic infections can be the result of asymptomatic infections. A number of regular and ongoing epidemiological studies are prerequisites in order to control these infections. This study was carried out with elementary school students to achieve an overview of the spread of parasitic infections in Zanjan city, Iran. Materials and Methods: In this cross-sectional study, using random cluster sampling, ۸۵۴ of ۶-۱۲ year-old students were selected from ۱۰ primary schools in Zanjan by three methods of direct smear, formalin-ether concentration and Scotch tape. Results: Overall, ۱۳۹ students (۱۶.۳%) were found to be infected by intestinal parasites. The protozoa Entamoeba coli (۴.۵۶%), Chilimastix mesnili (۴.۳۳%), Blastocystis hominis (۳.۰۴%), Giardia lamblia (۲.۳۴%), Iodamoeba butschlii (۱.۸۷%), Enterobius vermicularis (۱.۵۲%), Endolimax nana (۰.۴۶%), Dientamoeba fragilis (۰.۲۳%), Hymenolepis nana (۰.۱۱%), Sarcocystis (۰.۱۱%) were the most common parasite types. There was a significant difference in parasite prevalence between age and parents’ education. However, no significant difference was found with gender, family income, and residence. Conclusion: The results indicated that the prevalence of intestinal parasitic infections in primary schools was in low level and in comparison with ۱۹۹۴’s study in Zanjan city it has significantly decreased. With regard to the prevalence of intestinal parasites in study areas, improvement of health awareness among students and parents especially in the field of personal health seems necessary.    

Keywords: Intestinal parasites, Primary school student, Zanjan