Streptococcus massiliensis sp. nov., isolated from a patient blood culture

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  • Olga O. Glazunova
    Laboratoire de Bactériologie – Virologie, Hôpital de la Timone, CNRS UMR 6020, IFR48, 264 rue Saint-Pierre, 13385 Marseille, Cedex 05, France
  • Didier Raoult
    Laboratoire de Bactériologie – Virologie, Hôpital de la Timone, CNRS UMR 6020, IFR48, 264 rue Saint-Pierre, 13385 Marseille, Cedex 05, France
  • Véronique Roux
    Laboratoire de Bactériologie – Virologie, Hôpital de la Timone, CNRS UMR 6020, IFR48, 264 rue Saint-Pierre, 13385 Marseille, Cedex 05, France

Description

<jats:p>An unidentified strain of the viridans group of streptococci was isolated from a human blood sample. It was distinguished from all other recognized species of the <jats:italic>Streptococcus sanguinis</jats:italic> group by several biochemical characteristics. Phylogenetic analysis based on 16S rRNA gene sequence comparisons clustered this strain with <jats:italic>Streptococcus ferus</jats:italic> (mutans group) but phylogenetic analysis based on <jats:italic>rpoB</jats:italic> and <jats:italic>sodA</jats:italic> gene sequence comparisons included it in the <jats:italic>S. sanguinis</jats:italic> group. The isolate showed 95.4 and 95.2 % 16S rRNA gene sequence similarity to <jats:italic>S. ferus</jats:italic> and <jats:italic>S. sanguinis</jats:italic>, respectively, confirming it as belonging to a novel taxon, for which the name <jats:italic>Streptococcus massiliensis</jats:italic> sp. nov. is proposed. The type strain is 4401825<jats:sup>T</jats:sup> (=CIP 108498<jats:sup>T</jats:sup>=CCUG 49690<jats:sup>T</jats:sup>).</jats:p>

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