Using iFlow to model infectious epidemics

By Charles Xie

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The SIR model is a compartmental model in epidemiology that predicts the number of people infected with a contagious disease in a closed population over time. Such a model involves three coupled equations of the susceptible population S, the infected population I, and the recovered population R. One of the simplest SIR models is the Kermack-McKendrick model proposed in 1927. There are also many other variations of the SIR model, as shown on this page.


Click here to play with the SIR model


Click here to play with the SIS model


Click here to play with the SEIR model


Click here to play with the SEIS model

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