Speaker
Silvio Franz
(Université Paris-Sud)
Description
Influenza viruses evolve at a high speed to escape acquired
immunity and infect the same host several time. Contrary to
naive expectation, this does not lead to a large diversity
in the viral population. Phylogenetic studies show that the
viral population display the characters of an "evolving
quasispecies" with reduced instantaneous diversity.
In this talk I will discuss a simple stochastic model of and
evolving
viral population that allows to rationalize the evolving
quasispecies behavior as an emerging feature of the
competition between strains with different level of infectivity.
