3Bradford PA. Extended-spectrum β-1actamases in the 21st Century: characterization, epidemiology, and detection of this important resistance threat[J].Clin Microbiol Rev, 2001,14(4) :933-951.
4Palucha A, Mikiewicz B, Gniadkowski M. Diversification of Escherichia coli expressing an SHV-type extended-spectrum betalactamase(ESBL) during a hospital to outbreak:emergence of an ESBL-hyperproducing strain resistant to extended-spectrum cephalosporins[J].Antimicrob Agents Chemother, 1999 , 43 : 393-396.
5Wiener J, Quinn JP, Bradford PA, et al. Multiple antibiotic-resistant Klebsiel!a and Escherichia Coli in nursing homes[J]. JAMAA, 1999,281:517-523.
6National Committee for Clinical laboratory Standards Performance Standards for antimicrobial susceptibility testing ninth in formation[M]. Standard M100-S9,Pennsylvania,NCLLS 1999: 1-103.
7Thomson KS, Sanders Ch Detection of extended-spectrum betalactamases in members of the family Enterobacteriaceae: comparisom of the double-disk and three-dimensional test[J]. Antimicrob Agents Chemother, 1992,36:1877-1882.
8Jacoby GA, Han P. Detection of extended-spectrum beta- lactmases in clinical isolates of klebsiella pneumoniae and Escherichia coil[J]. J Clin Microbiol, 1996,34: 908-911.
