Genomic dissection of endemic carbapenem resistance reveals metallo-beta-lactamase dissemination through clonal, plasmid and integron transfer.

ABSTRACT: Infections caused by metallo-beta-lactamase-producing organisms (MBLs) are a global health threat. Our understanding of transmission dynamics and how MBLs establish endemicity remains limited. We analysed two decades of bla_IMP-4 evolution in a hospital using sequence data from 270 clinical and environmental isolates (including 169 completed genomes) and identified the bla_IMP-4 gene across 7 Gram-negative genera, 68 bacterial strains and 7 distinct plasmid types. We showed how an initial multi-species outbreak of conserved IncC plasmids (95 genomes across 37 strains) allowed endemicity to be established through the ability of bla_IMP-4 to disseminate in successful strain-genetic setting pairs we termed propagators, in particular Serratia marcescens and Entero

SUBMITTER: Macesic N 

PROVIDER: S-EPMC10409761 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature