The evolution and international spread of extensively drug resistant Shigella sonnei

Author:

Mason Lewis1ORCID,Greig David2,Cowley Lauren3,Partridge Sally4ORCID,Martinez Elena5,Blackwell Grace6,Chong Charlotte7,De Silva Malaka7,Bengtsson Rebecca8,Draper Jenny9ORCID,Ginn Andrew9,Sandaradura Indy6ORCID,Sim Eby9,Iredell Jonathan4,Sintchenko Vitali4ORCID,Ingle Danielle10ORCID,Howden Benjamin11ORCID,Lefevre Sophie12ORCID,Njamkepo Elisabeth12,Weill François-Xavier12ORCID,Ceyssens Pieter-Jan13,Jenkins Claire2,Baker Kate8ORCID

Affiliation:

1. NIHR HPRU in Gastrointestinal Infections at University of Liverpool

2. Gastrointestinal and Food Safety (One Health) Division

3. University of Bath

4. University of Sydney

5. Institute of Clinical Pathology and Medical Research

6. New South Wales Health Pathology

7. Clinical Infection, Microbiology, and Immunology

8. University of Liverpool

9. NSW Health Pathology

10. The University of Melbourne

11. The University of Melbourne at the Doherty Institute for Infection and Immunity; Victorian Infectious Disease Service, The Royal Melbourne Hospital, Peter Doherty Institute for Infection & Immunity

12. Institut Pasteur

13. Sciensano

Abstract

Abstract Shigella sonnei causes shigellosis, a severe gastrointestinal illness that is sexually transmissible among men who have sex with men (MSM). Multidrug resistance in S. sonnei is common and can include resistance to the World Health Organisation recommended treatment options, azithromycin, and ciprofloxacin. Recently, an MSM-associated outbreak of extended-spectrum β-lactamase producing, extensively drug resistant S. sonnei was reported in the United Kingdom. Here, we aimed to identify the genetic basis, natural history, and international dissemination of the outbreak strain. Our genomic epidemiological analyses of 3,304 isolates from the United Kingdom, Australia, Belgium, France, and the United States of America revealed an internationally connected outbreak with a common, low fitness-cost resistance plasmid, previously observed in travel associated sublineages of S. flexneri. Our results highlight the persistent threat of horizontally transmitted antimicrobial resistance and the value of continuing to work towards early and open international sharing of genomic surveillance data.

Publisher

Research Square Platform LLC

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