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. Author manuscript; available in PMC: 2008 Dec 1.
Published in final edited form as: Math Biosci. 2007 Jul 20;210(2):576–597. doi: 10.1016/j.mbs.2007.07.001

Table 1.

Transition probabilities

N A S
R pN = 1; pNA = 0 pA = 1 − pAN − pAS pS = 1 − pSA
I qNA = 1−qN > 0 qA =1 − qAS qS = 1 − qSA
D rN = 1 rA = 1 −rAS ≥ 0 rS = 1 −rSA ≥ 0

N = not infected; A = asymptomatic; S = symptomatic; R = normal resolution; I = inoculation; D = drug treatment.