Objectives: The objective of this research work was to conclude the occurrence of infections caused by parasites in the patients of Mayo Hospital Lahore. This research work was conducted in the summer season in the year of 2017. Methodology: Direct examination, concentration of formalin ether and Lehl-Neelsen staining of the stool samples carried out. For the identification of the stercoralis strongyloides, the culturing of the stool samples carried out on NAM (nutrient agar medium). Results: The examination of two hundred and five patients carried out. More than twenty-nine percent patients found infected from only one parasite. The percentages were as follows: Blastocystis was about 20.9%, Giardia lamblia was more than five percent, lodamoeba was only 0.48%, Dientamoeba fragilis was also 0.48%, Trichomonas hominis was also 0.48%, and Endolimax nana was about one percent. Both Enterobius vermicularis & Taenia were 0.48%. Conclusion: The outcome of this study showed the importance of the infection caused by Giardia in children with its specific signs. 76.74% patients of infection caused by Blastocystis have showed the signs of intestines complications. More research works are required to detect the association of B hominis and its related symptoms.
