Next: Project Goals
Up: Disease Dynamics
Previous: Logistic Model for Propagation
As an alternate model, which we will discuss in class later, consider the
following model, which is continuous in time.
Let be the fraction of a mixing populace which is infected with a
disease. Then is the fraction of the population which is
susceptible, and a model for changes in time is
where captures the rate of transmission of the disease in the
population and reflects the recovery of the infectious population.
For different diseases and different mixing populations, and
will vary.
James Powell
2002-02-15