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.