Table 1.

Compartment variables and their meanings.

Compartments	Meaning
$S\left(t\right)$	Susceptible individuals at time $t$
$V\left(t\right)$	Vaccinated individuals at time $t$
$I\left(t\right)$	Unvaccinated–Infected individuals at time $t$
$I_v\left(t\right)$	Vaccinated–Infected individuals at time $t$
$R\left(t\right)$	Recovered individuals at time $t$
$V\left(0\right)$	Vaccinated individuals in the last 6 months
$I\left(0\right)$	Unvaccinated–Infected individuals in the last 14 days
$I_v\left(0\right)$	Vaccinated–Infected individuals in the last 14 days
$R\left(0\right)$	Recovered individuals in the last 6 months
$S\left(0\right)$	$N-(I_0+V_0+I_{v0}+R_0)$