What is the SIS model in epidemics?

and grow in a population. Second, I will introduce the general SIS model framework and discuss the concept of the reproduction number and an epidemic steady state. 2.2 The First Model: A Simple Epidemic. To begin I start with the simplest possible dynamic model of an epidemic, an SI model. read more

Compartmental models may be used to predict properties of how a disease spreads, for example the prevalence (total number of infected) or the duration of an epidemic. read more

in modelling epidemics. And the other is to begin to develop formal models of epidemics that will be useful later in the course when we enter the applied realm. 2 The First Model To begin let us start with the simplest possible model of an epidemic. It will be a simplifled version of what is called an SIS model. read more