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Volume 8, Issue 12

Genomic epidemiology of clinical ESBL-producing in a German hospital suggests infections are primarily community- and regionally-acquired Open Access

Abstract

Clinical isolates that produce extended-spectrum β-lactamases (ESBLs) have been increasingly reported at a global scale. However, comprehensive data on the molecular epidemiology of ESBL-producing strains are limited and few studies have been conducted in non-outbreak situations.

We used whole-genome sequencing to describe the population structure of 294 ESBL-producing and isolates that were recovered from a German community hospital throughout a 1 year sampling period in a non-outbreak situation.

We found a high proportion of isolates (61.5 %) belonged to the globally disseminated extraintestinal pathogenic ST131, whereas a wider diversity of STs was observed among isolates. The ST131 population in this study was shaped by multiple introductions of strains as demonstrated by contextual genomic analysis including ST131 strains from other geographical sources. While no recent common ancestor of the isolates of the current study and other international isolates was found, our clinical isolates clustered with those previously recovered in the region. Furthermore, we found that the isolation of ESBL-producing clinical strains in hospitalized patients could only rarely be associated with likely patient-to-patient transmission, indicating primarily a community and regional acquisition of strains.

Further genomic analyses of clinical, carriage and environmental isolates is needed to uncover hidden transmissions and thus discover the most common sources of ESBL-producing pathogen infections in our hospitals.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): E. coli , epidemiology , ESBL , hospital and K. pneumoniae
© 2022 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License.
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2022-12-16
2024-04-30
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Genomic epidemiology of clinical ESBL-producing Enterobacteriaceae in a German hospital suggests infections are primarily community- and regionally-acquired
M Gen 8, 000901 (2022); https://doi.org/10.1099/mgen.0.000901
/content/journal/mgen/10.1099/mgen.0.000901
/content/journal/mgen/10.1099/mgen.0.000901
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