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Genomic comparison of carbapenem-resistant Enterobacteriaceae from humans and gulls in Alaska.

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OBJECTIVES Wildlife may harbor clinically important antimicrobial resistant (AMR) bacteria, but the role of wildlife in the epidemiology of AMR bacterial infections in humans is largely unknown. In this study,… Click to show full abstract

OBJECTIVES Wildlife may harbor clinically important antimicrobial resistant (AMR) bacteria, but the role of wildlife in the epidemiology of AMR bacterial infections in humans is largely unknown. In this study, we aimed to assess dissemination of theblaKPC carbapenemase gene among humans and gulls in Alaska. METHODS We performed whole genome sequencing to determine the genetic context ofblaKPC in bacterial isolates from all four human carbapenemase-producing Enterobacteriaceae (CPE) infections reported in Alaska between 2013-2018 and to compare sequences to seven previously reported CPE isolates from gull feces within the same region and time period. RESULTS Genomic analysis of CPE isolates suggested independent acquisition events among humans with no evidence for direct transmission ofblaKPC between people and gulls. However, some isolates shared conserved genetic elements surrounding blaKPC, suggesting possible exchange between species. CONCLUSIONS Our results highlight the genomic plasticity associated withblaKPC and demonstrate that sampling of wildlife may be useful for identifying clinically relevant antimicrobial resistance not observed through local passive surveillance in humans.

Keywords: resistant enterobacteriaceae; gulls alaska; comparison carbapenem; carbapenem resistant; genomic comparison; humans gulls

Journal Title: Journal of global antimicrobial resistance
Year Published: 2021

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