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Extended-Spectrum ?-Lactamases in Human Isolates of Multidrug-Resistant Non-typhoidal Salmonella enterica.


ABSTRACT: A total of 291 non-duplicate isolates of non-typhoidal Salmonella (NTS) were collected from the fecal samples of patients with salmonellosis in Armenia and Georgia during 1996-2016. The isolates were tested for resistance to antimicrobials, including extended-spectrum ?-lactamases (ESBL). The high prevalence of multidrug-resistance (MDR) and ESBL-producer phenotypes was detected among Salmonella enterica subsp. enterica serovar Typhimurium (S. Typhimurium) isolates collected from patients in Armenia between 1996 and 2016. A total of 36 MDR NTS isolates were subjected to whole genome sequencing (WGS) to determine the genetic background of antimicrobial resistance (AMR) and mobile genetic elements. All ESBL-producing S. Typhimurium isolates belonged to the same sequence type (ST328). The ESBL-producer phenotype was associated with plasmid-encoded CTX-M-5 production. A range of other plasmids was associated with resistance to other antimicrobials, including the MDR phenotype.

SUBMITTER: Sedrakyan AM 

PROVIDER: S-EPMC7783090 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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A total of 291 non-duplicate isolates of non-typhoidal <i>Salmonella</i> (NTS) were collected from the fecal samples of patients with salmonellosis in Armenia and Georgia during 1996-2016. The isolates were tested for resistance to antimicrobials, including extended-spectrum β-lactamases (ESBL). The high prevalence of multidrug-resistance (MDR) and ESBL-producer phenotypes was detected among <i>Salmonella enterica</i> subsp. <i>enterica</i> serovar Typhimurium (<i>S</i>. Typhimurium) isolates co  ...[more]

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