Table of Contents

What Is a Quasispecies?.- Quasispecies in Time-Dependent Environments.- Viruses as Quasispecies: Biological Implications.- Virus Fitness: Concept, Quantification, and Application to HIV Population Dynamics.- Population Bottlenecks in Quasispecies Dynamics.- Evolutionary Dynamics of HIV-1 and the Control of AIDS.- Evolution of Virulence in Picornaviruses.- Molecular Mechanisms of Poliovirus Variation and Evolution.- Hepatitis C Virus Population Dynamics During Infection.- Evolutionary Influences in Arboviral Disease.- Arenavirus Diversity and Evolution: Quasispecies In Vivo.- Mutant Clouds and Occupation of Sequence Space in Plant RNA Viruses.- Parvovirus Variation for Disease: A Difference with RNA Viruses?.- Transitions in Understanding of RNA Viruses: A Historical Perspective.