This book focuses on the reproduction and spread of a virus during an epidemic when the virus attaches to a host cell and viral genetic material (VGM) (protein, DNA, RNA) enters the cell, then replicates, and perhaps mutates, in the cell.
The movement of the VGM across the host cell outer membrane and within the host cell is a spatiotemporal dynamic process that is modelled as a system of ordinary and partial differential equations (ODE/PDEs).



The numerical integration of the ODE/PDEs is performed with routines coded (programmed) in R, a quality, open-source scientific computing system that is readily available from the Internet.
The R routines are available from a download link so that the example models can be executed without having to first study numerical methods and computer coding.