Clonal distribution and associated characteristics of Escherichia coli clinical and surveillance isolates from a military medical center - PubMed (original) (raw)

Clonal distribution and associated characteristics of Escherichia coli clinical and surveillance isolates from a military medical center

Amee R Manges et al. Diagn Microbiol Infect Dis. 2017 Apr.

Abstract

Antimicrobial-resistant Escherichia coli are a concern for military health services. We studied 100 extended-spectrum beta-lactamase (ESBL)-producing and non-producing E. coli clinical and surveillance isolates from military personnel and civilians at Brooke Army Medical Center (2007-2011). Major E. coli lineages, most prominently ST10 (24%), ST131 (16%), and ST648 (8%), were distributed much as reported for other North American populations. ST131, represented mainly by its resistance-associated ST131-H30 clonal subset, was uniquely associated with a clinical origin, regardless of ESBL status. Thus, clonal background predicted resistance phenotype and clinical versus surveillance origin, and these findings could assist military clinicians and epidemiologists.

Keywords: Antimicrobial resistance; Escherichia coli infections; Extended-spectrum beta-lactamases; Military medicine; Molecular epidemiology; Multilocus sequence typing; ST131; ST131-H30; Veterans; Virulence genes.

Published by Elsevier Inc.

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