Tehran University of Medical Sciences Iranian Journal of Parasitology 1735-7020 20 4 2025 12 07 573 583 EN Mohammad Reza Vafaei Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Mohammad Safaie Provincial Department of Environment, Kermanshah, Iran Elham Kazemirad Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Hamed Mirjalali Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran Zaynab Askari Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Mehdi Mohebali 1. Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2. Center for Research of Endemic Parasites of Iran, Tehran University of Medical Sciences, Tehran, Iran Gholamreza Mowlavi Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2025 05 13 2025 12 07 Background: In wildlife, the identification of parasitic infections should be pursued seriously in countries facing endangered species of animals in their geographical territories. We aimed to increase understanding of the possible role of wildlife herbivore reservoirs in the emergence of helminth infections in Kermanshah Province, western Iran. Methods: Sixty-five feces from Gazelle (Gazella subgutturosa) (N = 36 samples) and wild goat (Capra aegagrus) (N = 14 samples) were investigated. The samples were microscopically examined for gastrointestinal helminth eggs, and genomic DNA was extracted from the identified eggs. The internal transcribed spacer 2 (ITS2) region of ribosomal DNA was amplified and sequenced. Phylogenetic analysis of the nucleotide sequences confirmed the species identity. Results: The most common species circulating in the hosts were Teladorsagia circumcincta, Marshallagia spp., and Nematodirus oiratianus, all of which are reported in the wildlife in western Iran for the first time. Conclusion: These findings emphasize the importance of continuously assessing the parasite status of wildlife and similar routine surveillance in domestic environments to detect and manage potential zoonotic parasite species. https://ijpa.tums.ac.ir/index.php/ijpa/article/view/4605 https://ijpa.tums.ac.ir/index.php/ijpa/article/download/4605/1466