Fig. 4.
Epidemics with gamma distributed susceptibility or connectivity. Solid curves were generated by running a discretized version of the infinite system (Eqs. 1–4) with explicit gamma distributed susceptibility (green) or connectivity (blue). Dashes curves are the corresponding outputs of the reduced systems (Eqs. 22–25) and (Eqs. B.8–B.11). Prevalences of infection () over time are depicted on the top panel and effective reproduction numbers on the bottom. Parameters: ; per day; per day; and (colour figure online)