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There is currently much debate about the timescales of virus evolution. Some viruses may have co-evolved with human populations for tens of thousands of years, or even with our primate ancestors over many millions of years. However, calibrations of the rate of short-term virus evolution lead to estimates of dates for viral ancestors that are orders of magnitude more recent, and a number of the proposed host-virus co-divergence scenarios have been questioned. Other considerations indicate that the proposed recent timescales for virus evolution are implausible, that co-divergence has been rejected prematurely, and that long-term evolutionary rates are very much slower than short-term rates. There is a need to understand the biological basis of this discrepancy and to develop evolutionary models that can accommodate this.

Original publication

DOI

10.1016/j.coviro.2011.10.018

Type

Journal article

Journal

Curr Opin Virol

Publication Date

11/2011

Volume

1

Pages

436 - 441

Keywords

Animals, Biological Evolution, DNA Viruses, Evolution, Molecular, Host-Pathogen Interactions, Humans, Virus Diseases