Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance

Autores
Di Gregorio, Sabrina Noelia; Vielma Vallenilla, Jesús Eduardo; Haim, Maria Sol; Rago, Lucía; Campos, Josefina; Kekre, Mihir; Abrudan, Monica; Famiglietti, Ángela; Fernández Canigia, Liliana; Rubinstein, Gabriela; Von Specht, Martha Helena; Herrera, Melina Elizabeth; Aro, Carolina; Galas, Marcelo Fabián; Balderrama Yarhui, Norah; Figueiredo, Agnes; Lincopan, Nilton; Falcon, Miryan; Guillén, Rosa; Camou, Teresa; Varela, Gustavo Alfredo; Aanensen, David M.; Argimón, Silvia; Mollerach, Marta Eugenia
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Staphylococcus aureus remains one of the leading causes of infections worldwide and a common cause of bacteraemia. However, studies documenting the epidemiology of S. aureus in South America using genomics are scarce. We hereby report on the largest genomic epidemiology study to date of both methicillin-resistant S. aureus (MRSA) and methicillin-susceptible S. aureus (MSSA) in South America, conducted by the StaphNET-SA network. We characterised 404 genomes recovered from a prospective observational study of S. aureus bacteraemia in 58 hospitals from Argentina, Bolivia, Brazil, Paraguay and Uruguay between April and October 2019. We show that a minority of S. aureus isolates are phenotypically multi-drug resistant (5.2%), but more than a quarter are resistant to macrolide-lincosamide-streptogramin B (MLSb). MSSA were more genetically diverse than MRSA. Lower rates of associated antimicrobial resistance in community-associated(CA)-MRSA versus hospital-associated (HA)-MRSA were found in association with three S. aureus genotypes dominating the MRSA population: CC30-MRSA-IVc-t019-lukS/F-PV+, CC5-MRSA-IV-t002-lukS/F-PV- and CC8-MRSA-IVc-t008-lukS/F-PV+-COMER+. These are historically from a CA origin, carry on average fewer antimicrobial resistance determinants, and often lack key virulence genes. Surprisingly, CC398-MSSA-t1451-lukS/F-PV- related to the CC398 human-associated lineage is widely disseminated throughout the region, and is described here for the first time as the most prevalent MSSA lineage in South America. Moreover, CC398 strains carrying ermT (largely responsible for the MLSb resistance rates of MSSA strains: inducible iMLSb phenotype) and sh_fabI (related to triclosan resistance) were recovered from both CA and HA origin. The frequency of MRSA and MSSA lineages differed between countries but the most prevalent S. aureus genotypes are high-risk clones widely distributed in the South American region without a clear country-specific phylogeographical structure. Therefore, our findings underline the need for continuous genomic surveillance by regional networks such as StaphNET-SA. This article contains data hosted by Microreact.
Fil: Di Gregorio, Sabrina Noelia. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina
Fil: Vielma Vallenilla, Jesús Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina
Fil: Haim, Maria Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina. Dirección Nacional de Instituto de Investigación.Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"; Argentina
Fil: Rago, Lucía. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina
Fil: Campos, Josefina. Dirección Nacional de Instituto de Investigación.Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"; Argentina
Fil: Kekre, Mihir. University of Oxford; Reino Unido
Fil: Abrudan, Monica. University of Oxford; Reino Unido
Fil: Famiglietti, Ángela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; Argentina
Fil: Fernández Canigia, Liliana. Hospital Aleman; Argentina
Fil: Rubinstein, Gabriela. Hospital Privado Regional del Sur; Argentina
Fil: Von Specht, Martha Helena. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; Argentina
Fil: Herrera, Melina Elizabeth. Universidad Adventista del Plata; Argentina
Fil: Aro, Carolina. Gobierno de la Provincia de Santa Fe. Hospital de Niños Doctor Orlando Alassia.; Argentina
Fil: Galas, Marcelo Fabián. Pan American Health Organization; Estados Unidos
Fil: Balderrama Yarhui, Norah. Hospital del Niño Manuel Ascencio Villarroel; Bolivia
Fil: Figueiredo, Agnes. Universidade do Estado de Rio do Janeiro; Brasil. Universidade Federal Fluminense; Brasil
Fil: Lincopan, Nilton. Universidade de Sao Paulo; Brasil
Fil: Falcon, Miryan. Laboratorio Central de Salud Publica; Paraguay
Fil: Guillén, Rosa. Universidad Nacional de Asunción; Paraguay
Fil: Camou, Teresa. Ministerio de Salud; Uruguay
Fil: Varela, Gustavo Alfredo. Universidad de la República; Uruguay
Fil: Aanensen, David M.. University of Oxford; Reino Unido
Fil: Argimón, Silvia. University of Oxford; Reino Unido
Fil: Mollerach, Marta Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina
Materia
STAPHYLOCOCCUS AUREUS
MRSA
MSSA
SOUTH AMERICA
CC398
CC30
CC5
CC8
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/225627

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network_name_str CONICET Digital (CONICET)
spelling Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillanceDi Gregorio, Sabrina NoeliaVielma Vallenilla, Jesús EduardoHaim, Maria SolRago, LucíaCampos, JosefinaKekre, MihirAbrudan, MonicaFamiglietti, ÁngelaFernández Canigia, LilianaRubinstein, GabrielaVon Specht, Martha HelenaHerrera, Melina ElizabethAro, CarolinaGalas, Marcelo FabiánBalderrama Yarhui, NorahFigueiredo, AgnesLincopan, NiltonFalcon, MiryanGuillén, RosaCamou, TeresaVarela, Gustavo AlfredoAanensen, David M.Argimón, SilviaMollerach, Marta EugeniaSTAPHYLOCOCCUS AUREUSMRSAMSSASOUTH AMERICACC398CC30CC5CC8https://purl.org/becyt/ford/3.3https://purl.org/becyt/ford/3Staphylococcus aureus remains one of the leading causes of infections worldwide and a common cause of bacteraemia. However, studies documenting the epidemiology of S. aureus in South America using genomics are scarce. We hereby report on the largest genomic epidemiology study to date of both methicillin-resistant S. aureus (MRSA) and methicillin-susceptible S. aureus (MSSA) in South America, conducted by the StaphNET-SA network. We characterised 404 genomes recovered from a prospective observational study of S. aureus bacteraemia in 58 hospitals from Argentina, Bolivia, Brazil, Paraguay and Uruguay between April and October 2019. We show that a minority of S. aureus isolates are phenotypically multi-drug resistant (5.2%), but more than a quarter are resistant to macrolide-lincosamide-streptogramin B (MLSb). MSSA were more genetically diverse than MRSA. Lower rates of associated antimicrobial resistance in community-associated(CA)-MRSA versus hospital-associated (HA)-MRSA were found in association with three S. aureus genotypes dominating the MRSA population: CC30-MRSA-IVc-t019-lukS/F-PV+, CC5-MRSA-IV-t002-lukS/F-PV- and CC8-MRSA-IVc-t008-lukS/F-PV+-COMER+. These are historically from a CA origin, carry on average fewer antimicrobial resistance determinants, and often lack key virulence genes. Surprisingly, CC398-MSSA-t1451-lukS/F-PV- related to the CC398 human-associated lineage is widely disseminated throughout the region, and is described here for the first time as the most prevalent MSSA lineage in South America. Moreover, CC398 strains carrying ermT (largely responsible for the MLSb resistance rates of MSSA strains: inducible iMLSb phenotype) and sh_fabI (related to triclosan resistance) were recovered from both CA and HA origin. The frequency of MRSA and MSSA lineages differed between countries but the most prevalent S. aureus genotypes are high-risk clones widely distributed in the South American region without a clear country-specific phylogeographical structure. Therefore, our findings underline the need for continuous genomic surveillance by regional networks such as StaphNET-SA. This article contains data hosted by Microreact.Fil: Di Gregorio, Sabrina Noelia. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; ArgentinaFil: Vielma Vallenilla, Jesús Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; ArgentinaFil: Haim, Maria Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina. Dirección Nacional de Instituto de Investigación.Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"; ArgentinaFil: Rago, Lucía. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; ArgentinaFil: Campos, Josefina. Dirección Nacional de Instituto de Investigación.Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"; ArgentinaFil: Kekre, Mihir. University of Oxford; Reino UnidoFil: Abrudan, Monica. University of Oxford; Reino UnidoFil: Famiglietti, Ángela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; ArgentinaFil: Fernández Canigia, Liliana. Hospital Aleman; ArgentinaFil: Rubinstein, Gabriela. Hospital Privado Regional del Sur; ArgentinaFil: Von Specht, Martha Helena. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; ArgentinaFil: Herrera, Melina Elizabeth. Universidad Adventista del Plata; ArgentinaFil: Aro, Carolina. Gobierno de la Provincia de Santa Fe. Hospital de Niños Doctor Orlando Alassia.; ArgentinaFil: Galas, Marcelo Fabián. Pan American Health Organization; Estados UnidosFil: Balderrama Yarhui, Norah. Hospital del Niño Manuel Ascencio Villarroel; BoliviaFil: Figueiredo, Agnes. Universidade do Estado de Rio do Janeiro; Brasil. Universidade Federal Fluminense; BrasilFil: Lincopan, Nilton. Universidade de Sao Paulo; BrasilFil: Falcon, Miryan. Laboratorio Central de Salud Publica; ParaguayFil: Guillén, Rosa. Universidad Nacional de Asunción; ParaguayFil: Camou, Teresa. Ministerio de Salud; UruguayFil: Varela, Gustavo Alfredo. Universidad de la República; UruguayFil: Aanensen, David M.. University of Oxford; Reino UnidoFil: Argimón, Silvia. University of Oxford; Reino UnidoFil: Mollerach, Marta Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; ArgentinaMicrobiology Society2023-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/225627Di Gregorio, Sabrina Noelia; Vielma Vallenilla, Jesús Eduardo; Haim, Maria Sol; Rago, Lucía; Campos, Josefina; et al.; Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance; Microbiology Society; Microbial Genomics; 9; 5; 5-2023; 1-192057-5858CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.microbiologyresearch.org/content/journal/mgen/10.1099/mgen.0.001020info:eu-repo/semantics/altIdentifier/doi/10.1099/mgen.0.001020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:28:08Zoai:ri.conicet.gov.ar:11336/225627instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:28:09.019CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
title Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
spellingShingle Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
Di Gregorio, Sabrina Noelia
STAPHYLOCOCCUS AUREUS
MRSA
MSSA
SOUTH AMERICA
CC398
CC30
CC5
CC8
title_short Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
title_full Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
title_fullStr Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
title_full_unstemmed Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
title_sort Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance
dc.creator.none.fl_str_mv Di Gregorio, Sabrina Noelia
Vielma Vallenilla, Jesús Eduardo
Haim, Maria Sol
Rago, Lucía
Campos, Josefina
Kekre, Mihir
Abrudan, Monica
Famiglietti, Ángela
Fernández Canigia, Liliana
Rubinstein, Gabriela
Von Specht, Martha Helena
Herrera, Melina Elizabeth
Aro, Carolina
Galas, Marcelo Fabián
Balderrama Yarhui, Norah
Figueiredo, Agnes
Lincopan, Nilton
Falcon, Miryan
Guillén, Rosa
Camou, Teresa
Varela, Gustavo Alfredo
Aanensen, David M.
Argimón, Silvia
Mollerach, Marta Eugenia
author Di Gregorio, Sabrina Noelia
author_facet Di Gregorio, Sabrina Noelia
Vielma Vallenilla, Jesús Eduardo
Haim, Maria Sol
Rago, Lucía
Campos, Josefina
Kekre, Mihir
Abrudan, Monica
Famiglietti, Ángela
Fernández Canigia, Liliana
Rubinstein, Gabriela
Von Specht, Martha Helena
Herrera, Melina Elizabeth
Aro, Carolina
Galas, Marcelo Fabián
Balderrama Yarhui, Norah
Figueiredo, Agnes
Lincopan, Nilton
Falcon, Miryan
Guillén, Rosa
Camou, Teresa
Varela, Gustavo Alfredo
Aanensen, David M.
Argimón, Silvia
Mollerach, Marta Eugenia
author_role author
author2 Vielma Vallenilla, Jesús Eduardo
Haim, Maria Sol
Rago, Lucía
Campos, Josefina
Kekre, Mihir
Abrudan, Monica
Famiglietti, Ángela
Fernández Canigia, Liliana
Rubinstein, Gabriela
Von Specht, Martha Helena
Herrera, Melina Elizabeth
Aro, Carolina
Galas, Marcelo Fabián
Balderrama Yarhui, Norah
Figueiredo, Agnes
Lincopan, Nilton
Falcon, Miryan
Guillén, Rosa
Camou, Teresa
Varela, Gustavo Alfredo
Aanensen, David M.
Argimón, Silvia
Mollerach, Marta Eugenia
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv STAPHYLOCOCCUS AUREUS
MRSA
MSSA
SOUTH AMERICA
CC398
CC30
CC5
CC8
topic STAPHYLOCOCCUS AUREUS
MRSA
MSSA
SOUTH AMERICA
CC398
CC30
CC5
CC8
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.3
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Staphylococcus aureus remains one of the leading causes of infections worldwide and a common cause of bacteraemia. However, studies documenting the epidemiology of S. aureus in South America using genomics are scarce. We hereby report on the largest genomic epidemiology study to date of both methicillin-resistant S. aureus (MRSA) and methicillin-susceptible S. aureus (MSSA) in South America, conducted by the StaphNET-SA network. We characterised 404 genomes recovered from a prospective observational study of S. aureus bacteraemia in 58 hospitals from Argentina, Bolivia, Brazil, Paraguay and Uruguay between April and October 2019. We show that a minority of S. aureus isolates are phenotypically multi-drug resistant (5.2%), but more than a quarter are resistant to macrolide-lincosamide-streptogramin B (MLSb). MSSA were more genetically diverse than MRSA. Lower rates of associated antimicrobial resistance in community-associated(CA)-MRSA versus hospital-associated (HA)-MRSA were found in association with three S. aureus genotypes dominating the MRSA population: CC30-MRSA-IVc-t019-lukS/F-PV+, CC5-MRSA-IV-t002-lukS/F-PV- and CC8-MRSA-IVc-t008-lukS/F-PV+-COMER+. These are historically from a CA origin, carry on average fewer antimicrobial resistance determinants, and often lack key virulence genes. Surprisingly, CC398-MSSA-t1451-lukS/F-PV- related to the CC398 human-associated lineage is widely disseminated throughout the region, and is described here for the first time as the most prevalent MSSA lineage in South America. Moreover, CC398 strains carrying ermT (largely responsible for the MLSb resistance rates of MSSA strains: inducible iMLSb phenotype) and sh_fabI (related to triclosan resistance) were recovered from both CA and HA origin. The frequency of MRSA and MSSA lineages differed between countries but the most prevalent S. aureus genotypes are high-risk clones widely distributed in the South American region without a clear country-specific phylogeographical structure. Therefore, our findings underline the need for continuous genomic surveillance by regional networks such as StaphNET-SA. This article contains data hosted by Microreact.
Fil: Di Gregorio, Sabrina Noelia. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina
Fil: Vielma Vallenilla, Jesús Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina
Fil: Haim, Maria Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina. Dirección Nacional de Instituto de Investigación.Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"; Argentina
Fil: Rago, Lucía. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina
Fil: Campos, Josefina. Dirección Nacional de Instituto de Investigación.Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"; Argentina
Fil: Kekre, Mihir. University of Oxford; Reino Unido
Fil: Abrudan, Monica. University of Oxford; Reino Unido
Fil: Famiglietti, Ángela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; Argentina
Fil: Fernández Canigia, Liliana. Hospital Aleman; Argentina
Fil: Rubinstein, Gabriela. Hospital Privado Regional del Sur; Argentina
Fil: Von Specht, Martha Helena. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; Argentina
Fil: Herrera, Melina Elizabeth. Universidad Adventista del Plata; Argentina
Fil: Aro, Carolina. Gobierno de la Provincia de Santa Fe. Hospital de Niños Doctor Orlando Alassia.; Argentina
Fil: Galas, Marcelo Fabián. Pan American Health Organization; Estados Unidos
Fil: Balderrama Yarhui, Norah. Hospital del Niño Manuel Ascencio Villarroel; Bolivia
Fil: Figueiredo, Agnes. Universidade do Estado de Rio do Janeiro; Brasil. Universidade Federal Fluminense; Brasil
Fil: Lincopan, Nilton. Universidade de Sao Paulo; Brasil
Fil: Falcon, Miryan. Laboratorio Central de Salud Publica; Paraguay
Fil: Guillén, Rosa. Universidad Nacional de Asunción; Paraguay
Fil: Camou, Teresa. Ministerio de Salud; Uruguay
Fil: Varela, Gustavo Alfredo. Universidad de la República; Uruguay
Fil: Aanensen, David M.. University of Oxford; Reino Unido
Fil: Argimón, Silvia. University of Oxford; Reino Unido
Fil: Mollerach, Marta Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones en Bacteriología y Virología Molecular; Argentina
description Staphylococcus aureus remains one of the leading causes of infections worldwide and a common cause of bacteraemia. However, studies documenting the epidemiology of S. aureus in South America using genomics are scarce. We hereby report on the largest genomic epidemiology study to date of both methicillin-resistant S. aureus (MRSA) and methicillin-susceptible S. aureus (MSSA) in South America, conducted by the StaphNET-SA network. We characterised 404 genomes recovered from a prospective observational study of S. aureus bacteraemia in 58 hospitals from Argentina, Bolivia, Brazil, Paraguay and Uruguay between April and October 2019. We show that a minority of S. aureus isolates are phenotypically multi-drug resistant (5.2%), but more than a quarter are resistant to macrolide-lincosamide-streptogramin B (MLSb). MSSA were more genetically diverse than MRSA. Lower rates of associated antimicrobial resistance in community-associated(CA)-MRSA versus hospital-associated (HA)-MRSA were found in association with three S. aureus genotypes dominating the MRSA population: CC30-MRSA-IVc-t019-lukS/F-PV+, CC5-MRSA-IV-t002-lukS/F-PV- and CC8-MRSA-IVc-t008-lukS/F-PV+-COMER+. These are historically from a CA origin, carry on average fewer antimicrobial resistance determinants, and often lack key virulence genes. Surprisingly, CC398-MSSA-t1451-lukS/F-PV- related to the CC398 human-associated lineage is widely disseminated throughout the region, and is described here for the first time as the most prevalent MSSA lineage in South America. Moreover, CC398 strains carrying ermT (largely responsible for the MLSb resistance rates of MSSA strains: inducible iMLSb phenotype) and sh_fabI (related to triclosan resistance) were recovered from both CA and HA origin. The frequency of MRSA and MSSA lineages differed between countries but the most prevalent S. aureus genotypes are high-risk clones widely distributed in the South American region without a clear country-specific phylogeographical structure. Therefore, our findings underline the need for continuous genomic surveillance by regional networks such as StaphNET-SA. This article contains data hosted by Microreact.
publishDate 2023
dc.date.none.fl_str_mv 2023-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/225627
Di Gregorio, Sabrina Noelia; Vielma Vallenilla, Jesús Eduardo; Haim, Maria Sol; Rago, Lucía; Campos, Josefina; et al.; Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance; Microbiology Society; Microbial Genomics; 9; 5; 5-2023; 1-19
2057-5858
CONICET Digital
CONICET
url http://hdl.handle.net/11336/225627
identifier_str_mv Di Gregorio, Sabrina Noelia; Vielma Vallenilla, Jesús Eduardo; Haim, Maria Sol; Rago, Lucía; Campos, Josefina; et al.; Genomic epidemiology of Staphylococcus aureus isolated from bloodstream infections in South America during 2019 supports regional surveillance; Microbiology Society; Microbial Genomics; 9; 5; 5-2023; 1-19
2057-5858
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/doi/10.1099/mgen.0.001020
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
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dc.publisher.none.fl_str_mv Microbiology Society
publisher.none.fl_str_mv Microbiology Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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