Ramani, A.; Carstea, A.S.; Willox, R.; Grammaticos, B. - In: Physica A: Statistical Mechanics and its Applications 333 (2004) C, pp. 278-292
We study a model of an epidemic where the individuals which are cured from the infection are not permanently immunised but have a finite probability of becoming reinfected. We show that the epidemic does not follow the usual pattern of growth and decay but rather oscillates towards an...