Molecular evolution of influenza viruses

  title={Molecular evolution of influenza viruses},
  author={C. Scholtissek},
  journal={Virus Genes},
  • C. Scholtissek
  • Published 2005
  • Biology, Medicine
  • Virus Genes
  • There are two different mechanisms by which influenza viruses might evolve: (1) Because the RNA genome of influenza viruses is segmented, new strains can suddenly be produced by reassortment, as happens, for example, during antigenic shift, creating new pandemic strains. (2) New viruses evolve relatively slowly by stepwise mutation and selection, for example, during antigenic or genetic drift. Influenza A viruses were found in various vertebrate species, where they form reservoirs that do not… CONTINUE READING
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