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American Society for Microbiology, Antimicrobial Agents and Chemotherapy, 10(64), 2020

DOI: 10.1128/aac.01057-20

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Rapid Increase of CTX-M-Producing Shigella sonnei Isolates in Switzerland Due to Spread of Common Plasmids and International Clones

Journal article published in 2020 by Edgar I. Campos-Madueno, Odette J. Bernasconi, Aline I. Moser, Peter M. Keller, Francesco Luzzaro, Carola Maffioli, Thomas Bodmer ORCID, Andreas Kronenberg, Andrea Endimiani ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The Swiss Centre for Antibiotic Resistance (ANRESIS) has recently noted an increase of extended-spectrum cephalosporin-resistant (ESC-R) Shigella sonnei isolates nationwide (3.8% in 2016 versus 37.5% in 2019). To understand this phenomenon, we analyzed 25 representative isolates (of which 14 were ESC-R) collected in Switzerland during 2016 to 2019. Whole-genome sequencing was achieved using both the Illumina and the Nanopore platforms. Both ESC-R and extended-spectrum cephalosporin-susceptible isolates belonged to sequence type 152 (ST152).