Bistability and Resurgent Epidemics in Reinfection Models.

Spreading processes that propagate through local interactions have been studied in multiple fields (e.g., epidemiology, complex networks, social sciences) using the susceptible-infected-recovered (SIR) and susceptible-infected-susceptible (SIS) frameworks. SIR assumes individuals acquire full immunity to the infection after recovery, while SIS assumes individuals acquire no immunity after recovery...