en تخصصي Special Original article Original article <p align="justify"><font face="times new roman, times, serif"><font size="2"><b>Background:</b> Multidrug resistant Enterobacteriaceae<em>&nbsp;</em>which was confined to the hospital environments is now emerging in the domestic food related environments as well. The main objective of the present study was to investigate the prevalence of antibiotic resistant Enterobacteriaceae<em>&nbsp;</em>in the domestic food related environments.&nbsp;</font></font></p> <div align="justify"><font face="times new roman, times, serif"><font size="2"><b>Methods:</b> Resistance to ampicillin, chloramphenicol, ciprofloxacin, gentamicin, tetracycline, nalidixic acid, nitrofurantoin, and trimethoprim was evaluated in 125 isolates collected in domestic food related environments using agar micro dilution method.&nbsp;</font></font></div> <div align="justify"><font face="times new roman, times, serif"><font size="2"><b>Results:</b> Results indicated that 49.6% of the isolates were resistant to at least one antibiotic (32.8% to ampicillin, 6.4% to nitrofurantoin, 4% to tetracycline, 3.2% to nalidixic acid, 2.4% to chloramphenicol and 1.7% to trimethoprim). Resistance to multiple antibiotics was observed in 6.4% of the isolates.&nbsp;</font></font></div> <div align="justify"><font face="times new roman, times, serif"><font size="2"><b>Conclusion:</b> This study implicates existence of antibiotic resistant Enterobactericeae<em>&nbsp;</em>in the domestic food related environments. This resistance phenomenon requires continual vigilance and further studies are required to evaluate the role of domestic surfaces in the transmission of resistant pathogens and spread of infectious diseases. </font></font></div> Anti-Bacterial Agents, Enterobacteriaceae, Environment, Food Safety 51 55 http://jfqhc.ssu.ac.ir/browse.php?a_code=A-10-1-79&slc_lang=en&sid=1 I. Azevedo No CBQF-Centro de Biotecnologia e Química Fina–Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal H. Albano No CBQF-Centro de Biotecnologia e Química Fina–Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal J. Silva No CBQF-Centro de Biotecnologia e Química Fina–Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal P. Teixeira pcteixeira@porto.ucp.pt Yes CBQF-Centro de Biotecnologia e Química Fina–Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal