Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlations

Objectives: An increase in Streptococcus dysgalactiae subsp. equisimilis (SDSE) infections has been documented worldwide. This study aims to analyze invasive disease caused by SDSE (iSDSE) in adults over an 11-year period in Spain. Methods: We conducted a retrospective, laboratory-based study of iSD...

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Main Authors: Guillem López de Egea, Aida González-Díaz, Randall J Olsen, Gérard Guédon, Dàmaris Berbel, Immaculada Grau, Jordi Càmara, Lucía Saiz-Escobedo, Sara Calvo-Silveria, Irene Cadenas-Jiménez, José María Marimón, Emilia Cercenado, Antonio Casabella, Sara Martí, M. Ángeles Domínguez, Nathalie Leblond-Bourget, James M Musser, Carmen Ardanuy
Format: Article
Language:English
Published: Elsevier 2025-04-01
Series:International Journal of Infectious Diseases
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Online Access:http://www.sciencedirect.com/science/article/pii/S1201971225000025
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author Guillem López de Egea
Aida González-Díaz
Randall J Olsen
Gérard Guédon
Dàmaris Berbel
Immaculada Grau
Jordi Càmara
Lucía Saiz-Escobedo
Sara Calvo-Silveria
Irene Cadenas-Jiménez
José María Marimón
Emilia Cercenado
Antonio Casabella
Sara Martí
M. Ángeles Domínguez
Nathalie Leblond-Bourget
James M Musser
Carmen Ardanuy
author_facet Guillem López de Egea
Aida González-Díaz
Randall J Olsen
Gérard Guédon
Dàmaris Berbel
Immaculada Grau
Jordi Càmara
Lucía Saiz-Escobedo
Sara Calvo-Silveria
Irene Cadenas-Jiménez
José María Marimón
Emilia Cercenado
Antonio Casabella
Sara Martí
M. Ángeles Domínguez
Nathalie Leblond-Bourget
James M Musser
Carmen Ardanuy
author_sort Guillem López de Egea
collection DOAJ
description Objectives: An increase in Streptococcus dysgalactiae subsp. equisimilis (SDSE) infections has been documented worldwide. This study aims to analyze invasive disease caused by SDSE (iSDSE) in adults over an 11-year period in Spain. Methods: We conducted a retrospective, laboratory-based study of iSDSE detected at Hospital Universitari de Bellvitge (HUB) from 2012 to 2022 (n = 89) and isolates collected in three Spanish hospitals in 2018 (n = 22). Clinical data from HUB were collected. Isolates were tested for antimicrobial susceptibility (European Committee on Antimicrobial Susceptibility Testing 2023), subjected to whole genome sequencing and analyzed for mobile genetic elements (MGEs). A mouse model was used to analyze virulence. Results: iSDSE episodes at HUB occurred predominantly in older patients with comorbidities (particularly, diabetes, chronic heart disease, and malignancies). Whole genome sequencing revealed a high genetic diversity, with the most common lineages being CC15, CC17, and CC20. Various virulence factors, including the superantigen speG, were identified. Macrolides, lincosamides, and tetracyclines exhibited the highest resistance rates (>27%) and changed over time, linked to multiple MGEs. The mouse model highlighted the virulence of the CC20-stG62647 lineage, but these results were discordant with clinical data. Conclusion: iSDSE incidence is increasing and associated with older patients with comorbidities. Genetically, SDSE is diverse with a high capacity to integrate MGEs carrying resistance determinants. Mouse model studies showed the enhanced virulence of the CC20-stG62647 lineage. These findings underscore the need for ongoing surveillance of this emerging pathogen.
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spelling doaj-art-202533aca3de4993b6b80341be1187ea2025-01-31T05:10:12ZengElsevierInternational Journal of Infectious Diseases1201-97122025-04-01153107778Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlationsGuillem López de Egea0Aida González-Díaz1Randall J Olsen2Gérard Guédon3Dàmaris Berbel4Immaculada Grau5Jordi Càmara6Lucía Saiz-Escobedo7Sara Calvo-Silveria8Irene Cadenas-Jiménez9José María Marimón10Emilia Cercenado11Antonio Casabella12Sara Martí13M. Ángeles Domínguez14Nathalie Leblond-Bourget15James M Musser16Carmen Ardanuy17Microbiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine and Health Sciences, University of Barcelona, Barcelona, SpainMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, SpainLaboratory of Molecular and Translational Human Infectious Disease Research, Center for Infectious Diseases, Department of Pathology and Genomic Medicine, Houston Methodist Research Institute and Houston Methodist Hospital, Houston, USAUniversité de Lorraine, INRAE, DynAMic, Nancy, FranceMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, SpainResearch Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, Spain; Infectious Diseases Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, SpainMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, SpainMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, SpainMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, SpainMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, SpainBiodonostia, Infectious Diseases Area, Respiratory Infection and Antimicrobial Resistance Group, Osakidetza Basque Health Service, Donostialdea Integrated Health Organization, Microbiology Department, San Sebastián, SpainResearch Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, Spain; Clinical Microbiology and Infectious Disease Department, Hospital General Universitario Gregorio Marañón, Madrid, SpainMicrobiology Department, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT-CERCA), Universitat Autònoma de Barcelona, Sabadell, SpainMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, SpainMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain; Research Network for Infectious Diseases (CIBERINFEC), ISCIII, Madrid, SpainUniversité de Lorraine, INRAE, DynAMic, Nancy, FranceLaboratory of Molecular and Translational Human Infectious Disease Research, Center for Infectious Diseases, Department of Pathology and Genomic Medicine, Houston Methodist Research Institute and Houston Methodist Hospital, Houston, USAMicrobiology Department, Hospital Universitari Bellvitge, IDIBELL-UB, L'Hospitalet de Llobregat, Spain; Research Network for Respiratory Diseases (CIBERES), ISCIII, Madrid, Spain; Department of Pathology and Experimental Therapeutics, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain; Corresponding author. Tel.: +34 93 260 79 30; fax: +34 93 260 75 47.Objectives: An increase in Streptococcus dysgalactiae subsp. equisimilis (SDSE) infections has been documented worldwide. This study aims to analyze invasive disease caused by SDSE (iSDSE) in adults over an 11-year period in Spain. Methods: We conducted a retrospective, laboratory-based study of iSDSE detected at Hospital Universitari de Bellvitge (HUB) from 2012 to 2022 (n = 89) and isolates collected in three Spanish hospitals in 2018 (n = 22). Clinical data from HUB were collected. Isolates were tested for antimicrobial susceptibility (European Committee on Antimicrobial Susceptibility Testing 2023), subjected to whole genome sequencing and analyzed for mobile genetic elements (MGEs). A mouse model was used to analyze virulence. Results: iSDSE episodes at HUB occurred predominantly in older patients with comorbidities (particularly, diabetes, chronic heart disease, and malignancies). Whole genome sequencing revealed a high genetic diversity, with the most common lineages being CC15, CC17, and CC20. Various virulence factors, including the superantigen speG, were identified. Macrolides, lincosamides, and tetracyclines exhibited the highest resistance rates (>27%) and changed over time, linked to multiple MGEs. The mouse model highlighted the virulence of the CC20-stG62647 lineage, but these results were discordant with clinical data. Conclusion: iSDSE incidence is increasing and associated with older patients with comorbidities. Genetically, SDSE is diverse with a high capacity to integrate MGEs carrying resistance determinants. Mouse model studies showed the enhanced virulence of the CC20-stG62647 lineage. These findings underscore the need for ongoing surveillance of this emerging pathogen.http://www.sciencedirect.com/science/article/pii/S1201971225000025Streptococcus dysgalactiaeSDSEVirulenceWhole genome sequencingHumansMice
spellingShingle Guillem López de Egea
Aida González-Díaz
Randall J Olsen
Gérard Guédon
Dàmaris Berbel
Immaculada Grau
Jordi Càmara
Lucía Saiz-Escobedo
Sara Calvo-Silveria
Irene Cadenas-Jiménez
José María Marimón
Emilia Cercenado
Antonio Casabella
Sara Martí
M. Ángeles Domínguez
Nathalie Leblond-Bourget
James M Musser
Carmen Ardanuy
Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlations
International Journal of Infectious Diseases
Streptococcus dysgalactiae
SDSE
Virulence
Whole genome sequencing
Humans
Mice
title Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlations
title_full Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlations
title_fullStr Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlations
title_full_unstemmed Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlations
title_short Emergence of invasive Streptococcus dysgalactiae subsp. equisimilis in Spain (2012-2022): genomic insights and clinical correlations
title_sort emergence of invasive streptococcus dysgalactiae subsp equisimilis in spain 2012 2022 genomic insights and clinical correlations
topic Streptococcus dysgalactiae
SDSE
Virulence
Whole genome sequencing
Humans
Mice
url http://www.sciencedirect.com/science/article/pii/S1201971225000025
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