Importance of surveillance of new delhi metallo-beta-lactamase klebsiella pneumoniae: Molecular characterization and clonality of strains isolated in the lazio region, italy

Research output: Contribution to journalArticlepeer-review

Abstract

Introduction: New Delhi metallo-β-lactamase producing Klebsiella pneumoniae (NDM-Kpn) strains have been causing healthcare-associated infections worldwide. The aim of this study was to describe the molecular mechanisms of antimicrobial resistance and to analyze the clonality of NDM-Kpn isolates collected between January 2019 and June 2020 from patients admitted to hospitals from the Lazio region, Italy. Methods: We performed a retrospective cohort study. Whole-genome sequencing (WGS) was performed on all NDM-Kpn strains; clonality and genetic relationships were further investigated. Results: During the surveillance period, 17 NDM-Kpn isolates were obtained from 17 patients admitted to seven different hospitals. Eight different sequence types (STs) were detected: ST147 (n = 4), ST383 (n = 4), ST15 (n = 3), ST11 (n = 2), ST17 (n = 1), ST29 (n = 1), ST307 (n = 1) and the newly identified ST4853 (n = 1). Genetic relationships were further investigated by the WGS-based core genome MLST (cgMLST) scheme, and 5 cluster types (CTs) were identified. Whereas a substantial overall heterogeneity among isolates was detected (8 different STs were identified out of 17 isolates), the strains within each cluster showed a very high level of genome similarity. Discussion: Our study highlights the key role of surveillance, which allowed taking a picture of a part of the NDM-Kpn strains circulating in Italy, adding further insight into their molecular features.

Original languageEnglish
Pages (from-to)3659-3665
Number of pages7
JournalInfection and Drug Resistance
Volume14
DOIs
Publication statusPublished - Sep 8 2021

Keywords

  • Carbapenem-resistant klebsiella pneumoniae
  • Healthcare-associated infections
  • New delhi metallo-β-lactamase
  • Surveillance

ASJC Scopus subject areas

  • Pharmacology
  • Infectious Diseases
  • Pharmacology (medical)

Fingerprint

Dive into the research topics of 'Importance of surveillance of new delhi metallo-beta-lactamase klebsiella pneumoniae: Molecular characterization and clonality of strains isolated in the lazio region, italy'. Together they form a unique fingerprint.

Cite this