References

Apisarnthanarak, A., P. Kiratisin and L.M. Mundy, 2008. Predictors of mortality from community-onset bloodstream infections due to extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae. Infect. Control Hospital Epidemiol., 29: 671-674.
PubMed  |  

Apisarnthanarak, A., P. Kiratisin, P. Saifon, R. Kitphati, S. Dejsirilert and L.M. Mundy, 2007. Clinical and molecular epidemiology of community-onset, extended-spectrum beta-lactamase-producing Escherichia coli infections in Thailand: A case-case-control study. Am. J. Infect. Control, 35: 606-612.
CrossRef  |  PubMed  |  Direct Link  |  

Bradford, P.A., 2001. Extended-spectrum β-lactamases in the 21st century: Characterization, epidemiology and detection of this important resistance threat. Clin. Microbiol. Rev., 14: 933-951.
CrossRef  |  PubMed  |  Direct Link  |  

Hosseini-Mazinani, S.M., F. Eftekhar, M. Milani and S. Ghandili, 2007. Characterization of beta-lactamases from urinary isolates of Escherichia coli in Tehran. Iran Biomed. J., 11: 95-99.
PubMed  |  

Jacoby, G.A. and L. Sutton, 1991. Properties of plasmids responsible for production of extended-spectrum β-lactamases. Antimicrob. Agents Chemother., 35: 164-169.
PubMed  |  Direct Link  |  

Jarlier, V., M.H. Nicolas, G. Fournier and A. Philippon, 1988. Extended broad-spectrum β-lactamases conferring transferable resistance to newer β-lactam agents in Enterobacteriaceae: Hospital prevalence and susceptibility patterns. Rev. Infect. Dis., 10: 867-878.
PubMed  |  

Laupland, K.B., D.L. Church, J. Vidakovich, M. Mucenski and J.D. Pitout, 2008. Community-onset extended-spectrum beta-lactamase (ESBL) producing Escherichia coli: Importance of international travel. J. Infect., 57: 441-448.
PubMed  |  

Lin, T.L., S.I. Tang, C.T. Fang, P.R. Hsueh, S.C. Chang and J.T. Wang, 2006. Extended-spectrum beta-lactamase genes of Klebsiella pneumoniae strains in Taiwan: Recharacterization of shv-27, shv-41 and tem-116. Microbial Drug Resistance, 12: 12-15.
PubMed  |  

Mehrgan, H. and M. Rahbar, 2008. Prevalence of extended-spectrum beta-lactamase-producing Escherichia coli in a tertiary care hospital in Tehran, Iran. Int. J. Antimicrob. Agents, 31: 147-151.
PubMed  |  Direct Link  |  

Mendelson, G., V. Hait, J. Ben-Israel, D. Gronich, E. Granot and R. Raz, 2005. Prevalence and risk factors of extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae in an Israeli long-term care facility. Eur. J. Clin. Microbiol. Infect. Dis., 24: 17-22.
CrossRef  |  

NCCLS., 2000. Performance Standards for Antimicrobial Disk Susceptibility Tests: Approved Standard. 7th Edn., National Committee for Clinical Laboratory Standards, Wayne, PA USA.

Paterson, D.L., 2006. Resistance in gram-negative bacteria: Enterobacteriaceae. Am. J. Med., 119: S20-S28.
CrossRef  |  PubMed  |  Direct Link  |  

Rodriguez-Bano, J., M.D. Navarro, L. Romero, L. Martinez-Martinez and M.A. Muniain et al., 2004. Epidemiology and clinical features of infections caused by extended-spectrum beta-lactamase-producing Escherichia coli in nonhospitalized patients. J. Clin. Microbiol., 42: 1089-1094.
CrossRef  |  Direct Link  |  

Rodriguez-Bano, J., M.D. Navarro, L. Romero, M.A. Muniain and M.D. Cueto et al., 2006. Bacteremia due to extended-spectrum beta-lactamase-producing Escherichia coli in the CTX-M era: A new clinical challenge. Clin. Infect. Dis., 43: 1407-1414.
PubMed  |  

Shahcheraghi, F., H. Moezi and M.M. Feizabadi, 2007. Distribution of TEM and SHV beta-lactamase genes among Klebsiella pneumoniae strains isolated from patients in Tehran. Med. Sci. Monit., 13: BR247-BR250.
PubMed  |  

Sidorenko, S.V., A.G. Berezin and D.V. Ivanov, 2004. [Molecular mechanisms of cephalosporin resistance in Gram-negative bacteria of the Enterobacteriaceae family]. Antibiot Khimioter, 49: 6-16.
PubMed  |  

Valverde, A., T.M. Coque, M.P. Sanchez-Moreno, A. Rollan, F. Baquero and R. Canton, 2004. Dramatic increase in prevalence of fecal carriage of extended-spectrum beta-lactamase-producing Enterobacteriaceae during nonoutbreak situations in Spain. J. Clin. Microbiol., 42: 4769-4775.
PubMed  |  

Woodford, N., M.E. Ward, M.E. Kaufmann, J. Turton and E.J. Faqan et al., 2004. Community and hospital spread of Escherichia coli producing CTX-M extended spectrum beta-lactamases in the UK. J. Antimicrob. Chemother., 54: 735-743.
CrossRef  |  PubMed  |  Direct Link  |  

Yao, F., Y. Qian, S. Chen, P. Wang and Y. Huang, 2007. Incidence of extended-spectrum beta-lactamases and characterization of integrons in extended-spectrum beta-lactamase-producing Klebsiella pneumoniae isolated in Shantou, China. Acta. Biochim. Biophys. Sin (Shanghai), 39: 527-532.
PubMed  |  Direct Link  |