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  • Title: Molecular epidemiology of carbapenem-resistant Pseudomonas aeruginosa carrying metallo-beta-lactamase genes in Taiwan.
    Author: Huang YT, Chang SC, Lauderdale TL, Yang AJ, Wang JT.
    Journal: Diagn Microbiol Infect Dis; 2007 Oct; 59(2):211-6. PubMed ID: 17521840.
    Abstract:
    Seventy-two isolates of carbapenem-resistant Pseudomonas aeruginosa (CRPA) collected through the Taiwan Surveillance of Antimicrobial Resistance (TSAR) program in 2000 and 2002 were studied for carriage of metallo-beta-lactamase (MBL), integrase genes, and integrons. Epidemiologic relatedness was determined using pulsed-field gel electrophoresis. The prevalence of the MBL genes among CRPA was 36.0% (9 of 25) in TSAR II and 17.0% (8/47) in TSAR III, with prevalence in surveyed hospitals being 19.1% (4/21, TSAR II) and 23.1% (6 of 26, TSAR III). The bla(VIM-3) was detected in 15 of the 17 MBL-positive isolates; the remainder possessed bla(VIM-2). The bla(IMP) was not evident. Class 1 integron was detected in all MBL-positive isolates; amplicon DNA sequences containing the bla(VIM-3) regions were all identical. All MBL-positive isolates remained susceptible to colistin. Molecular typing revealed a predominant strain that comprised 14 of the isolates among the various surveyed hospitals.
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