Friday, April 17, 2020

SIR Model of Epidemics: Herd Immunity

Excellent presentation at

Infection of susceptibles: dS/dt = - b S I

Infected: dI/dt = b S I - k I

Recovered/removed: dR/dt = k I

When the initial fraction of susceptibles, S0, is less than k/b = 1/(contact number),
the infection stops.

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