Table 1  Definitions and initial values for the populations represented by each compartment: the values here are the averages of the model values across all countries developed in a prior COVID-19 study [22].
Symbols  Value  Units  Definitions
S0  57.05 × 106  people  Susceptible individuals
E0  66.50  people  Exposed individuals
A0  13.30  people  Asymptomatic individuals
I0  13.30  people  Symptomatic individuals
Rec0  0  people  Recovered individuals
W0  1%  unitless  % of viral pathogen in environment