Table 1.

List of all the variables and parameters used in both models: the seven-compartment model in Eqs. (1)–(7), and the six-compartment model in Eqs. (8), (13).

Symbol	Interpretation
$S_N$	Fraction of population that are non-socially distant suceptibles.
$S_D$	Fraction of population that are socially distant suceptibles.
$A_N$	Fraction of population that are non-socially distant asymptomatics.
$A_D$	Fraction of population that are socially distant asymptomatics.
$I_N$	Fraction of population that are non-socially distant symptomatics.
$I_D$	Fraction of population that are socially distant symptomatics.
$R$	Fraction of population that are recovered and presumed to have developed at least temporary immunity.
${∊}_S$	CoRF: Effect of socially distancing susceptibles on disease transmission.
${∊}_A$	CoRF: Effect of socially distancing asymptomatics on disease transmission.
${∊}_I$	CoRF: Effect of socially distancing symptomatic infectives on disease transmission.
${\beta }_A$	Transmission rate between asymptomatic non-socially distanced individual and non-socially distanced susceptible.
${\beta }_I$	Transmission rate between non-socially distanced symptomatic and non-socially distanced susceptible.
$\delta$	Mortality rate of disease.
$f$	Fraction of individuals who become symptomatic (as opposed to never showing symptoms and recovering).
$h_1$	Return to socializing rate.
$h_2$	Rate of social distancing (control).
${\gamma }_{\mathit{AI}}$	Rate of transition out of the asymptomatic class.
${\gamma }_{\mathit{IR}}$	Rate of recovery.
$p$	Fraction of non-socially distanced asymptomatics who socially distance upon showing symptoms.
$q$	Fraction of recovered individuals who lose immunity but continue social distancing.
$\rho$	Rate at which recovered individuals lose immunity and become susceptible again.