Appendix 1—table 2. Markov events defining SOR(V) and SORI(V) stochastic transmission models.

Event	Status	Effect	Probability per unit time
Infection	${\displaystyle S,V_2}$	${\displaystyle S\to O,V_2\to O_{V2}}$	${\displaystyle \lambda \left(a,t\right)}$
	$V_1$	${\displaystyle V_1\to O_{V1}}$	${\displaystyle {\epsilon }_S\lambda \left(a,t\right)}$
Emergence (Occult)	${\displaystyle O,O_{V1},O_{V2}}$	${\displaystyle O\to R,O_{V1}\to R_V,O_{V2}\to R_V}$	${\displaystyle \frac{1}{T_O}}$
Emergence (Reactive)	${\displaystyle R,R_V}$	${\displaystyle R\to I,R_V\to I_V}$	${\displaystyle \frac{1}{T_R}}$
Loss of Protection	$V_1$	${\displaystyle V_1\to V_2}$	${\displaystyle \frac{1}{T_V}}$