en میکروب شناسی Microbiology <p style="text-align: justify;"><em><strong>Background:</strong></em> Multidrug resistance in Salmonella enteritidis isolates is a public health problem worldwide; the present study, therefore, was designed for antimicrobial-resistance determination in this strain.</p> <p style="text-align: justify;"><em><strong>Methods: </strong></em>Salmonella strains isolated from poultry samples by biochemical positive and negative tests were subjected to PCR and identified as Salmonella enteritidis. For detection and identification of Salmonella enteritidis isolates, sdfI gene-specific primers were used.</p> <p style="text-align: justify;"><em><strong>Results:</strong></em> We found that 100% of isolates were resistant to ampicillin, 90% were resistant to cephalothin and streptomycin, 70% were resistant to cefotaxime, and 60% were resistant to kanamycin and gentamicin</p> <p style="text-align: justify;"><em><strong>Conclusion:</strong></em> Salmonella enteritidis isolates had antimicrobial resistance to mentioned antibiotics.</p> Antibiotic Resistance, PCR, Poultry, Salmonella enteritidis 9 13 http://rbmb.net/browse.php?a_code=A-10-1-2&slc_lang=en&sid=1 Saeedeh Ghazaey Ghazaeys2@mums.ac.ir 10031947532846005890 10031947532846005890 Yes Molecular pathology research center, Ghaem educational and research center, Mashhad university of medical science, Mashhad, Iran. Mohammad Hossain Mirmomeni 10031947532846005891 10031947532846005891 No Department of Biology, Faculty of sciences, Razi University, Kermanshah, Iran