title: Stability in cyclic epidemic models.
abstract: A general formulation for a family of cyclic epidemic models with density-dependent feedback mechanisms and removed classes is presented. A parameter, lambda, related to the basic reproductive rate determines the asymptotic behaviour of solutions of the model. It is shown that if lambda less than 1 the trivial solution is globally stable, and if lambda greater than 1 it is conditionally stable. The results are applied to a set of differential equations that has been used to model the life cycle of a parasite that has two hosts.
mesh_terms: D000818:Animals; D001699:Biometry; D004813:Epidemiology; D006801:Humans; D008954:Models, Biological; D010271:Parasites / Q000254:growth & development; D011157:Population Dynamics