The origin of hepatitis C virus genotypes.

Abstract excerpt

For many RNA viruses, relatively recent times of origin of extant viruses are implied by the high rate of substitution observed in longitudinal studies. However, extrapolation of short-term rates of substitution can give misleading estimates of times of divergence. We show here that the common ancestor of different types of hepatitis C virus (HCV) is older than previously thought. The rate of HCV sequence change...

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