Table 2. Assumptions of states and parameters used for initial fit of the model.

Parameter	Value
Overall population, N(t)	18.8 × 106
Initial infectious cases, I(0)	2
Initial exposed cases, E(0)	40
Initial recovered cases, R(0)	0
Initial death cases, D(0)	0
Initial susceptible cases, S(0)	N(0) − E(0) − I(0)
Fraction of elderly population, Nold	0.08
Fatality rate of elderly population, dold	0.03
Fatality rate of nonelderly population, doth	0.015
Incubation period, τinc	5.1 days
Recovery period, τrec	18.8 days
Time to death, τdeath	18.8 days
Initial basic reproduction number, R0	3.0