Escaping stochastic extinction of mutant virus: Temporal pattern of emergence of drug resistance within a host.

Abstract excerpt

After infecting a host, a viral strain may increase rapidly within the body and produce mutants with a faster proliferation rate than the virus itself. However, most of the mutants become extinct because of the stochasticity caused by the small number of infected cells. In addition, the mean growth rate of a mutant strain decreases with time because the number of susceptible target cells is reduced by the...

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