Table 1.

Variables and variable definition.

Variables	Variable Definition
S(t)	Susceptible individual at time t
V(t)	Vaccinated individual at time t
$C_{sy}\left(t\right)$	Symptomatic carrier at time t
$C_{Asy}\left(t\right)$	Asymptomatic carrier at time t
I(t)	Infected individual at time t
R(t)	Recovered individual at time t