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Antimicrob Agents Chemother. 2006 Aug;50(8):2872-4.

qnr prevalence in ceftazidime-resistant Enterobacteriaceae isolates from the United States.

Author information

1
Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA 02114-2696, USA.

Abstract

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.

PMID:
16870791
PMCID:
PMC1538681
DOI:
10.1128/AAC.01647-05
[Indexed for MEDLINE]
Free PMC Article

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