Different views of the epidemic data for simulated influenza in two different populations are shown in Figure 2 . Figures 2a and 2b show graphs of the second and third epidemics in the population. These graphs show the kinds of commonly-seen deviations from a smooth curve that occur in real world data [35] . In the EpiFlex model, this is attributed to less synchronization of immunity combined with the formation of small world networks among demographic groups as they move from location to location. Figures 2c and 2d are alternate views of a simple influenza epidemic occurring within a naïve population (Figure 3 ).