fa الگوی مقاومت انتروکوک های جدا شده از عفونت های بیمارستانی (بیمارستان های شهر های گنبد و گرگان تحقيقي Original Paper <p>Abstract Background and Objective: Enterococci are normal flora of human body and considered as the third leading cause of nosocomial infections. The aim of this study was to determine drug resistance of Enterococcus species through biochemical methods. Material and Methods: One hundred twenty-eight of enterococcus suspected samples were isolated from gorgan and gonbad&rsquo;s hospitals from April to June, 2013. The samples were cultured on blood agar, chrome-agar, EMB agar and some special cultures of isolation of Enterococcus species. Suspension of bacteria was grown in Mueller Hinton agar and the inhibition zone diameter was determined by disk antibiogram. Results: Of 128 samples, 109(85.15%) were enterococci faecalis and 19 (14.85%) Enterococcus Faecium. In all of 128 cases, eight showed resistance to amoxicillin, ten to ampicillin, five to gentamicin, five to ciprofloxacin, six to chloramphenicol, four to cephalexin and one to vancomycin. Conclusion: It seems to be necessary to use drug sensitivity test for having appropriate treatment and preventing from resistance strains. Keywords: Enterococci, Antibiotic Resistance, Antibiogram</p> Enterococci, Antibiotic Resistance, Antibiogram 61 65 http://mlj.goums.ac.ir/browse.php?a_code=A-10-1-258&slc_lang=fa&sid=1 Naghipoor, E ابراهیم نقیپور 100319475328460010945 100319475328460010945 No Faculty of Biology Sciences, Islamic Azad University of Tonekabon, Tonekabon, Iran دانشگاه آزاد اسلامی واحد تنکابن Raefi, A علی رائفی alito.raefi@yahoo.com 100319475328460010946 100319475328460010946 Yes Faculty of Biology Sciences, Islamic Azad University of Tonekabon Branch, Tonekabon, Iran دانشگاه آزاد اسلامی واحد تنکابن,ایران NasrollahiOmran, A آیت الله نصرالهی عمران 100319475328460010947 100319475328460010947 No Faculty of Biology Sciences, Islamic Azad University, Tonekabon Branch, Tonekabon, Iran. دانشگاه آزاد اسلامی واحد تنکابن,ایران