The MATH of Pandemics | Intro to the SIR Model

How do organizations like the WHO and CDC do mathematical modelling to predict the growth of an epidemic? In this video we introduce the Susceptible- Infected-Recovered or SIR model. This is a simple system of differential equations that qualitatively behalves in a reasonable way. Studying this near the beginning gives a value called R_0 which governs the early growth rate which is exponential growth and is a standard metric in epidemilogy. Indeed real world data shows the current epidemic is well modeled by this kind of exponential growth.

PART II here:    • The MATH of Epidemics | Variants of t...  

0:00 Assumptions of the SIR Model
3:10 Derivation of the SIR Model
6:44 Graphing the SIR Model
8:58 Finding R0
13:43 Real World Data



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This video was created by Dr. Trefor Bazett. I'm an Assistant Teaching Professor at the University of Victoria.

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