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September 22, 2019

Genomic characterization of carbapenemase-producing Klebsiella pneumoniae with chromosomally encoded blaNDM-1.

Authors: Sakamoto, Noriko and Akeda, Yukihiro and Sugawara, Yo and Takeuchi, Dan and Motooka, Daisuke and Yamamoto, Norihisa and Laolerd, Warawut and Santanirand, Pitak and Hamada, Shigeyuki

We report here Klebsiella pneumoniae strains carrying chromosomal blaNDM-1 in Thailand. The genomes of these two isolates include a 160-kbp insertion containing blaNDM-1, which is almost identical to that in the IncHI1B-like plasmid. Further analysis indicated that IS5-mediated intermolecular transposition and Tn3 transposase-mediated homologous recombination resulted in the integration of blaNDM-1 into the chromosome from an IncHI1B-like plasmid. The spread of this type of carbapenem-resistant Enterobacteriaceae may threaten public health and warrants further monitoring. Copyright © 2018 American Society for Microbiology.

Journal: Antimicrobial agents and chemotherapy
DOI: 10.1128/AAC.01520-18
Year: 2018

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