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Antimicrobial Nonsusceptibility of Gram-Negative Bloodstream Isolates, Veterans Health Administration System, United States, 2003-2013
Journal article   Open access   Peer reviewed

Antimicrobial Nonsusceptibility of Gram-Negative Bloodstream Isolates, Veterans Health Administration System, United States, 2003-2013

Michihiko Goto, Jennifer S McDanel, Daniel J Livorsi, Michael E Ohl, Brice F Beck, Kelly K Richardson, Bruce Alexander, Eli N Perencevich and Makoto M Jones
Emerging Infectious Diseases, Vol.23(11), pp.1815-1825
2017
DOI: 10.3201/eid2311.161214
PMID: 29047423
url
https://doi.org/10.3201/eid2311.161214View
Published (Version of record) Open Access

Abstract

Bacteremia caused by gram-negative bacteria is associated with serious illness and death, and emergence of antimicrobial drug resistance in these bacteria is a major concern. Using national microbiology and patient data for 2003-2013 from the US Veterans Health Administration, we characterized nonsusceptibility trends of community-acquired, community-onset; healthcare-associated, community-onset; and hospital-onset bacteremia for selected gram-negative bacteria (Escherichia coli, Klebsiella spp., Pseudomonas aeruginosa, and Acinetobacter spp.). For 47,746 episodes of bacteremia, the incidence rate was 6.37 episodes/10,000 person-years for community-onset bacteremia and 4.53 episodes/10,000 patient-days for hospital-onset bacteremia. For Klebsiella spp., P. aeruginosa, and Acinetobacter spp., we observed a decreasing proportion of nonsusceptibility across nearly all antimicrobial drug classes for patients with healthcare exposure; trends for community-acquired, community-onset isolates were stable or increasing. The role of infection control and antimicrobial stewardship efforts in inpatient settings in the decrease in drug resistance rates for hospital-onset isolates needs to be determined.
Bacteria Drug resistance in microorganisms Health aspects Escherichia coli

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