The evolution of virulence of West Nile virus in a mosquito vector: implications for arbovirus adaptation and evolution

Abstract excerpt

BACKGROUND: Virulence is often coupled with replicative fitness of viruses in vertebrate systems, yet the relationship between virulence and fitness of arthropod-borne viruses (arboviruses) in invertebrates has not been evaluated. Although the interactions between vector-borne pathogens and their invertebrate hosts have been characterized as being largely benign, some costs of arbovirus exposure have been...

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