OBJECTIVE A surveillance study was performed for nosocomial infections in order to investigate the change in antimicrobial resistance of Klebsiella pneumoniae,especially the strains isolated from 1999 to 2004.METHODS K-B test was used for the antibiotics susceptibility test and the results were read based on National Committee for Clinical Laboratory Standards(NCCLS) of the USA.The situation of ESBLs-producing strains of K.pneumoniae was investigated.RESULTS Totally 326 K.pneumoniae strains showed the highest susceptibility to imipenem.Ceftazidime,cefepime,and cefoperazone/sulbactam also showed excellent activity against K.pneumoniae.The prevalence of ESBLs from 326 strains was 20.2%.CONCLUSIONS It is important to study the drug resistance in nosocomial infections by K.pneumoniae.
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