4.7 Article

qnr Prevalence in ceftazidime-resistant Enterobacteriaceae isolates from the United States

Journal

ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
Volume 50, Issue 8, Pages 2872-2874

Publisher

AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.01647-05

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Funding

  1. NIAID NIH HHS [AI57576, R01 AI043312, R01 AI057576, AI43312] Funding Source: Medline

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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.

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