Low occurrence of the new species Staphylococcus argenteus in a Staphylococcus aureus collection of human isolates from Belgium

Staphylococcus argenteus is a novel Staphylococcus species closely related to Staphylococcus aureus that has been recently described. In this study, we investigated the proportion and the characteristics of S. argenteus recovered from humans in Belgium. S. aureus. human isolates collected in Belgium...

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Bibliographic Details
Published in:European journal of clinical microbiology & infectious diseases 2016-06, Vol.35 (6), p.1017-1022
Main Authors: Argudín, M. A., Dodémont, M., Vandendriessche, S., Rottiers, S., Tribes, C., Roisin, S., de Mendonça, R., Nonhoff, C., Deplano, A., Denis, O.
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - pharmacology
Antimicrobial agents
Belgium - epidemiology
Biomedical and Life Sciences
Biomedicine
Drug resistance
Drug Resistance, Bacterial
Genes
Genes, Bacterial
Genotype
Humans
Internal Medicine
Laboratories
Medical Microbiology
Microbial Sensitivity Tests
Molecular Typing
Original Article
Phylogeny
Staphylococcal Infections - epidemiology
Staphylococcal Infections - microbiology
Staphylococcus - classification
Staphylococcus - genetics
Staphylococcus - isolation & purification
Staphylococcus aureus
Staphylococcus aureus - classification
Staphylococcus aureus - genetics
Staphylococcus aureus - isolation & purification
Virulence
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Summary:Staphylococcus argenteus is a novel Staphylococcus species closely related to Staphylococcus aureus that has been recently described. In this study, we investigated the proportion and the characteristics of S. argenteus recovered from humans in Belgium. S. aureus. human isolates collected in Belgium from 2006 to 2015 ( n  = 1,903) were retrospectively characterised via the presence of non-pigmented colonies on chocolate agar, spa typing and rpoB sequencing to determine if some of them were in fact S. argenteus . Out of 73 strains non-pigmented on chocolate plates, 3 isolates (0.16 %) showed rpoB sequences, in addition to spa and sequence types (ST2250/t5787, ST2250/t6675, ST3240/t6675), related to S. argenteus . Two of them were methicillin-resistant, harbouring a SCC mec type IV. The three S. argenteus isolates carried genes ( sak , scn ) of the immune evasion cluster. This first Belgian nationwide analysis showed a low occurrence of S. argenteus . Further studies should be conducted to identify the distribution range and the clinical impact of this new species.
ISSN:0934-9723
1435-4373
DOI:10.1007/s10096-016-2632-x