title: Population models for diseases with no recovery.
abstract: An S----I epidemic model with a general shape of density-dependent mortality and incidence rate is studied. The asymptotic behaviour is global convergence to an endemic equilibrium, above a threshold, and to a disease-free equilibrium, below the threshold. The effect of vaccination is then examined.
authors.affiliation: Dipartimento Matematica, Università di Trento, Povo, Ilaly.
authors.forename: A
authors.initials: A
authors.lastname: Pugliese
mesh_terms: D004813:Epidemiology; D006801:Humans; D008433:Mathematics; D015233:Models, Statistical; D009026:Mortality; D011157:Population Dynamics; D014611:Vaccination