modelFlu

Model of an influenza epidemic
Diagram of Flu

Information

The influenza model describes the outbreak of an influenza epidemic. The model was adapted from the STELLA manual.

References:

  1. Richmond, B., S. Peterson, and P. Vescuso (1987), An Academic User's Guide to STELLA, High Performance Systems, Inc., Lyme, N.H.

Simulate the model across 52 time units and plot the four populations:

Components

TypeNameDefaultDescription
RealNon_inf_popNon-infected population
RealInf_popInfected population
RealSick_popSick population
RealImmune_popImmune population
SystemDynamics.Levels.LevelNon_infected
SystemDynamics.Rates.Rate_1Infection
SystemDynamics.Levels.LevelInfected
SystemDynamics.Rates.Rate_1Incubation
SystemDynamics.Levels.LevelSick
SystemDynamics.IntroductoryExamples.Influenza.Infection_RateInfection_Rate1
SystemDynamics.Auxiliary.Prod_4Prod_4_1
SystemDynamics.Auxiliary.ConstContacts
SystemDynamics.Auxiliary.ConstContraction
SystemDynamics.IntroductoryExamples.Influenza.Rate_equationIncubation_rate
SystemDynamics.Auxiliary.ConstTime_to_Breakdown
Modelica.Blocks.Math.AddContagious
Modelica.Blocks.Math.DivisionPerc_Infected
Modelica.Blocks.Math.Add3Total_Pop
SystemDynamics.Levels.LevelImmune
SystemDynamics.Rates.Rate_1Cure
SystemDynamics.IntroductoryExamples.Influenza.Rate_equationCure_rate
SystemDynamics.Auxiliary.ConstSick_Duration
SystemDynamics.Auxiliary.ConstImmune_Period
SystemDynamics.Rates.Rate_1Activation
SystemDynamics.IntroductoryExamples.Influenza.Rate_equationActivation_rate