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Published in: European Journal of Clinical Microbiology & Infectious Diseases 10/2016

01-10-2016 | Original Article

Whole genome sequencing as a tool for phylogenetic analysis of clinical strains of Mitis group streptococci

Authors: L. H. Rasmussen, R. Dargis, K. Højholt, J. J. Christensen, O. Skovgaard, U. S. Justesen, F. S. Rosenvinge, C. Moser, O. Lukjancenko, S. Rasmussen, X. C. Nielsen

Published in: European Journal of Clinical Microbiology & Infectious Diseases | Issue 10/2016

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Abstract

Identification of Mitis group streptococci (MGS) to the species level is challenging for routine microbiology laboratories. Correct identification is crucial for the diagnosis of infective endocarditis, identification of treatment failure, and/or infection relapse. Eighty MGS from Danish patients with infective endocarditis were whole genome sequenced. We compared the phylogenetic analyses based on single genes (recA, sodA, gdh), multigene (MLSA), SNPs, and core-genome sequences. The six phylogenetic analyses generally showed a similar pattern of six monophyletic clusters, though a few differences were observed in single gene analyses. Species identification based on single gene analysis showed their limitations when more strains were included. In contrast, analyses incorporating more sequence data, like MLSA, SNPs and core-genome analyses, provided more distinct clustering. The core-genome tree showed the most distinct clustering.
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Metadata
Title
Whole genome sequencing as a tool for phylogenetic analysis of clinical strains of Mitis group streptococci
Authors
L. H. Rasmussen
R. Dargis
K. Højholt
J. J. Christensen
O. Skovgaard
U. S. Justesen
F. S. Rosenvinge
C. Moser
O. Lukjancenko
S. Rasmussen
X. C. Nielsen
Publication date
01-10-2016
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Clinical Microbiology & Infectious Diseases / Issue 10/2016
Print ISSN: 0934-9723
Electronic ISSN: 1435-4373
DOI
https://doi.org/10.1007/s10096-016-2700-2

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