The time to reach the equilibrium solution can be very long. Co-existence of virus and zooplankton can occur with time varying forcing. The combination of reaction, diffusion and stirring extends the time of a viral epidemic and its impact spatially. High values of the virus and infected phytoplankton are found on the fronts of uninfected susceptible phytoplankton. Stirring and mixing affects the fraction of the bloom affected by a viral attack. For certain values of the transmission parameter there is a stirring rate that produces a maximum domain averaged viral response.