Short essays by Douglas Winslow Cooper, Ph.D., the author of TING AND I: A Memoir of Love, Courage and Devotion, published in September 2011 by Outskirts Press (Parker, CO, USA), available from outskirtspress.com/tingandi, Barnes and Noble [bn.com], and Amazon [amazon.com], in paperback or ebook formats. Please visit us at tingandi.com for more information.
Friday, April 17, 2020
SIR Model of Epidemics: Herd Immunity
Excellent presentation at
https://www.maa.org/press/periodicals/loci/joma/the-sir-model-for-spread-of-disease-the-differential-equation-model
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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