Qnr prevalence in ceftazidime-resistant Enterobacteriaceae isolates from the United States.
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ABSTRACT:
SUBMITTER: Robicsek A
PROVIDER: S-EPMC1538681 | biostudies-literature | 2006 Aug
REPOSITORIES: biostudies-literature
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qnr prevalence in ceftazidime-resistant Enterobacteriaceae isolates from the United States.
Robicsek A A Strahilevitz J J Sahm D F DF Jacoby G A GA Hooper D C DC
Antimicrobial agents and chemotherapy 20060801 8
We screened 313 ceftazidime-resistant Enterobacteriaceae isolates obtained in the United States from 1999 to 2004 for all three known qnr genes. A qnr gene was present in 20% of Klebsiella pneumoniae isolates, 31% of Enterobacter sp. isolates, and 4% of Escherichia coli isolates. qnrA and qnrB occurred with equivalent frequencies and, except for qnrB in enterobacters, were stable over time. qnrS was absent. ...[more]
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