Tehran University of Medical Sciences Iranian Journal of Parasitology 1735-7020 14 1 2019 03 11 136 142 Mehdi MOHEBALI Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran AND Research Center of Zoonoses, Tehran University of Medical Sciences, Tehran, Iran Zabiholah ZAREI Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Khadijeh KHANALIHA Research Center of Pediatric Infectious Diseases, Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran Eshrat Beigom KIA Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Afsaneh MOTAVALLI-HAGHI Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Jaber DAVOODI Department of Veterinary Parasitology, Zanjan Branch, Islamic Azad University, Zanjan, Iran Fathemeh TARIGHI Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Mahya KHODABAKHSH Department of Internal Diseases, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Mostafa REZAEIAN Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran AND Center for Research of Endemic Parasites of Iran (CREPI), Tehran University of Medical Sciences, Tehran, Iran 2019 03 11 Background: In this study, some microsporidial and coccidian parasites were isolated from 103 domestic cats in the Meshkin Shahr area, northwestern Iran during the Jun 2014 to Jun 2015, and their genera were identified using parasitological methods with emphasis on their zoonotic importance. Methods: One hundred and three fecal samples of domestic cats were collected and preserved in formalin (10%) and conserved in phosphate buffer saline solution, finally examined by microscopy after formalin-ether concentration and specific staining. Preservation in dichromate potassium (2.5%) was performed for all coccidian positive samples and then sporulated coccidian oocysts were investigated. Results: The detected parasites were Isospora spp. 6/103(5.8%). Microsporidian spores were identified in 46/103 (44.6%) of all samples post-stained by the aniline blue staining method. Conclusion: Microsporidial infections were more prevalent in domestic cats. Further studies are needed in the identification of microsporidial spores isolated from infected cats. https://ijpa.tums.ac.ir/index.php/ijpa/article/view/2499 https://ijpa.tums.ac.ir/index.php/ijpa/article/download/2499/922