Host Range, Host–Virus Interactions, and Virus Transmission

Three intricate and intertwined biological features in the replication cycle of viruses are covered in this chapter: The range of cellular entities that support virus replication and/or virus transmission, and the various relationships viruses establish with their hosts and biological vectors. Although in its infancy, an explosion of research on virus–host interactions has already revealed surprising relationships ranging from strictly parasitic to mutualistic, and some others in between. A clearer picture is emerging as regards to our understanding of the full spectrum of these interactions, even with varying experimental approaches and differing opinions on terminology and data interpretation.