Sall, Amadou A., Faye, Ousmane, Diallo, Mawlouth, Firth, Cadhla, Kitchen, Andrew, and Holmes, Edward C. (2010) Yellow Fever Virus Exhibits Slower Evolutionary Dynamics than Dengue Virus. Journal of Virology, 84 (2). pp. 765-772.

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Abstract

Although yellow fever has historically been one of the most important viral infections of humans, relatively little is known about the evolutionary processes that shape its genetic diversity. Similarly, there is limited information on the molecular epidemiology of yellow fever virus (YFV) in Africa even though it most likely first emerged on this continent. Through an analysis of complete E gene sequences, including a newly acquired viral collection from Central and West Africa (Senegal, Cameroon, Central African Republic, Côte d'Ivoire, Mali, and Mauritania), we show that YFV exhibits markedly lower rates of evolutionary change than dengue virus, despite numerous biological similarities between these two viruses. From this observation, along with a lack of clock-like evolutionary behavior in YFV, we suggest that vertical transmission, itself characterized by lower replication rates, may play an important role in the evolution of YFV in its enzootic setting. Despite a reduced rate of nucleotide substitution, phylogenetic patterns and estimates of times to common ancestry in YFV still accord well with the dual histories of colonialism and the slave trade, with areas of sylvatic transmission (such as Kedougou, Senegal) acting as enzootic/epidemic foci.

Item ID:	59920
Item Type:	Article (Research - C1)
ISSN:	1098-5514
Copyright Information:	© 2010, American Society for Microbiology. All Rights Reserved.
Date Deposited:	18 Jul 2024 01:07
FoR Codes:	06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060399 Evolutionary Biology not elsewhere classified @ 100%
SEO Codes:	97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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