Epidemiological data of staphylococcal scalded skin syndrome in France from 1997 to 2007 and microbiological characteristics of Staphylococcus aureus associated strains

Authors

  • V. Lamand,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
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  • O. Dauwalder,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Est, Bron
    3.  INSERM U851
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  • A. Tristan,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Est, Bron
    3.  INSERM U851
    4.  Université de Lyon, Faculté de Médecine Lyon Est, Domaine de la Buire, Lyon
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  • J. S. Casalegno,

    1.  Hospices Civils de Lyon, Laboratoire de Virologie, Centre de Biologie et Pathologie Est, Bron, France
    2.  Université Lyon 1 – Université de Lyon, Virologie et Pathologie Humaine (VirPath), EMR 4610, Faculté de Médecine Lyon Est, Domaine de la Buire, Lyon, France
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  • H. Meugnier,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Est, Bron
    3.  INSERM U851
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  • M. Bes,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Est, Bron
    3.  INSERM U851
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  • O. Dumitrescu,

    1.  INSERM U851
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Sud, Pierre Bénite, France
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  • M. Croze,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Est, Bron
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  • F. Vandenesch,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Est, Bron
    3.  INSERM U851
    4.  Université de Lyon, Faculté de Médecine Lyon Est, Domaine de la Buire, Lyon
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  • J. Etienne,

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Est, Bron
    3.  INSERM U851
    4.  Université de Lyon, Faculté de Médecine Lyon Est, Domaine de la Buire, Lyon
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  • G. Lina

    1.  Hospices Civils de Lyon, Centre National de Référence des Staphylocoques
    2.  INSERM U851
    3.  Hospices Civils de Lyon, Laboratoire de Bactériologie, Centre de Biologie et de Pathologie Sud, Pierre Bénite, France
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Corresponding author: G. Lina, Hospices Civils de Lyon, Centre de Biologie et de Pathologie Sud, 165, chemin du grand Revoyet, F-69495 Pierre Bénite, France
E-mail: gerard.lina@univ-lyon1.fr

Abstract

Clin Microbiol Infect

Abstract

Epidemiological data on staphylococcal scalded skin syndromes (SSSS), including bullous impetigo (BI) and generalized exfoliative syndrome (GES), are scarce. To better characterize SSSS and associated Staphylococcus aureus strains, we conducted a retrospective study of 349 cases collected in France between 1997 and 2007 by the National Reference Centre of Staphylococci. Our results showed a stationary evolution of SSSS cases, with a heterogeneous distribution of cases in France. Although notification was not exhaustive, we estimated an incidence of 0.56 cases/year/million inhabitants, in accordance with previous studies conducted in France and Europe, with a median age of 2 years old and sex ratios of 1. A seasonal effect was observed, with a higher GES/BI ratio in autumn compared with other seasons, which could be explained by the impact of viral co-infection. Genetic analysis of S. aureus strains showed that accessory gene regulator (agr) 4, exfoliative toxin A (eta) and B (etb) genes, staphylococcal and enterotoxin-like O (selo) gene and agr4 etb selo profiles were predominantly associated with GES, whereas agr2 eta and agr4 eta selo were more frequently observed with BI. Only one methicillin-resistant strain was found. Protein A (spa) typing identified two main genotypes: spa clonal complex (CC) 159/sequence-type (ST) 121 (75%) and spaCC346/ST15 (18%). spaCC159 was mainly associated with agr4 eta etb selo, agr4 eta selo and agr4 etb selo, and spaCC346 was mainly associated with agr2 eta, suggesting that French SSSS cases are caused by these two main lineages. However, in a multivariate analysis, only etb was independently associated with GES.

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