Psychological effect can lead to bistability in epidemics
arXiv:2001.06754
Abstract
In this paper, we study the psychological effect in a SIS epidemic model. The basic reproduction number is obtained. However, the disease free equilibrium is always asymptotically stable, which doesn't depends on the basic reproduction number. The system has a saddle-node bifurcation appear and displays bistable behavior, which is a new phenomenon in epidemic dynamics and different from the backward bifurcation behavior.
8 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:1911.13002