Molecular evolutionary dynamics of Ross River virus and implications for vaccine efficacy

Jones, Anita, Lowry, Kym S., Aaskov, John G., Holmes, Edward C., & Kitchen, Andrew (2010) Molecular evolutionary dynamics of Ross River virus and implications for vaccine efficacy. Journal of General Virology, 91(1), pp. 182-188.

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Ross River virus (RRV) is a mosquito-borne member of the genus Alphavirus that causes epidemic polyarthritis in humans, costing the Australian health system at least US$10 million annually. Recent progress in RRV vaccine development requires accurate assessment of RRV genetic diversity and evolution, particularly as they may affect the utility of future vaccination. In this study, we provide novel RRV genome sequences and investigate the evolutionary dynamics of RRV from time-structured E2 gene datasets. Our analysis indicates that, although RRV evolves at a similar rate to other alphaviruses (mean evolutionary rate of approx. 8x10(-4) nucleotide substitutions per site year(-1)), the relative genetic diversity of RRV has been continuously low through time, possibly as a result of purifying selection imposed by replication in a wide range of natural host and vector species. Together, these findings suggest that vaccination against RRV is unlikely to result in the rapid antigenic evolution that could compromise the future efficacy of current RRV vaccines.

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8 citations in Scopus
7 citations in Web of Science®
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ID Code: 40501
Item Type: Journal Article
Refereed: Yes
Keywords: Ross River virus (RRV), mosquito-borne, genus Alphavirus, epidemic polyarthritis
DOI: 10.1099/vir.0.014209-0
ISSN: 0022-1317
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > MEDICAL MICROBIOLOGY (110800) > Medical Virology (110804)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2010 Society for General Microbiology
Copyright Statement: This is an author manuscript that has been accepted for publication in Microbiology, copyright Society for General Microbiology, but has not been copy-edited, formatted or proofed. Cite this article as appearing in Microbiology. This version of the manuscript may not be duplicated or reproduced, other than for personal use or within the rule of ‘Fair Use of Copyrighted Materials’ (section 17, Title 17, US Code), without permission from the copyright owner, Society for General Microbiology. The Society for General Microbiology disclaims any responsibility or liability for errors or omissions in this version of the manuscript or in any version derived from it by any other parties. The final copy-edited, published article, which is the version of record, can be found at, and is freely available without a subscription 12 months after publication.
Deposited On: 07 Mar 2011 22:16
Last Modified: 29 Feb 2012 14:01

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