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Global Epidemiology and Evolutionary History of Staphylococcus aureus ST45
Journal article   Peer reviewed

Global Epidemiology and Evolutionary History of Staphylococcus aureus ST45

N. Effelsberg, M. Stegger, L. Peitzmann, O. Altinok, G.W. Coombs, B. Pichon, A. Kearns, P.R. Randad, C.D. Heaney, S. Bletz, …
Journal of Clinical Microbiology, Vol.59(1), pp.e02198-20
2020
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Abstract

Staphylococcus aureus ST45 is a major global MRSA lineage with huge strain diversity and a high clinical impact. It is one of the most prevalent carrier lineages but also frequently causes severe invasive disease, such as bacteremia. Little is known about its evolutionary history. In this study, we used whole-genome sequencing to analyze a large collection of 451 diverse ST45 isolates from 6 continents and 26 countries. De novo-assembled genomes were used to understand genomic plasticity and to perform coalescent analyses. The ST45 population contained two distinct sublineages, which correlated with the isolates’ geographical origins. One sublineage primarily consisted of European/North American isolates, while the second sublineage primarily consisted of African and Australian isolates. Bayesian analysis predicted ST45 originated in northwestern Europe about 500 years ago. Isolation time, host, and clinical symptoms did not correlate with phylogenetic groups. Our phylogenetic analyses suggest multiple acquisitions of the SCCmec element and key virulence factors throughout the evolution of the ST45 lineage.

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
1 Clinical & Life Sciences
1.23 Antibiotics & Antimicrobials
1.23.173 MRSA and VRE
Web Of Science research areas
Microbiology
ESI research areas
Microbiology
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