Objective: Results of 19.042 patients admitted to the Laboratory of Medical Parasitology in Celal Bayar University Hafsa Sultan Hospital for parasitological stool examination between January 2011 and December 2015 were evaluated.

Material and Methods: All stool samples were examined with wet mount (native-Lugol), formaline ethyl acetate concentration and trichrome staining methods. Besides; cellophane tape preparations of 7757 patients were examined.

Results: Intestinal parasites were detected in 1865 (9.79%) of 19.042 patients who were admitted during a five year period. The highest rate of parasites (13.19%) was detected in 2013. The most frequently identified intestinal parasites were Blastocystis spp. 1.263 (6.63%), Giardia intestinalis 277 (1.45%) and Dientamoeba fragilis 160 (0.84%) in stool samples. Cellophane tape samples were collected from 7757 patients and Enterobius vermicularis was detected in 139. Two or more parasites were detected in 127 (6.33%) of the positive cases. The frequency of parasites was 11.2% in females and 10.81% in males.

Conclusion: Blastocystis spp., G. intestinalis and D. fragilis were the most frequently detected intestinal parasites in patients admitted during a five year period. Our findings showed that intestinal parasites are an important public health problem.