Table 2.

Variables, parameter definitions, and values assumed in the numerical simulation of a resident facility

VariablesParametersValuesReferences
0 Basic reproduction number1.4–2.84, 6, 15
m Fraction of exposed that progress to infection0.66716
1/φ i * Average latency period, days1.95, 6
1/γ A Average recovery period for asymptomatic, days54, 17
1/γ I Average recovery period for infected, days54, 17
CFPCase fatality proportion0.03–0.1518
δ I Resident mortality rate, δ I = (CFP/1 − CFP) γ I (day−1)0.0062–0.03516
π i * Transmission reduction parameter when applied to infected0.05–14
ρ i * Transmission reduction parameter when applied to asymptomatic0.05–14
η i * Infectiousness of asymptomatics relative to symptomatics0.0216
1/ξ VF ; 1/ξ VC Average time spent between locations by visitors, hours; days0–2; 714
1/ξ SF ; 1/ξ SC Average time spent between locations by staff, hours; hours8–12; 12–1614
pA Probability of having asymptomatics escape monitoring efforts1Estimated
pE Probability of having exposed escape monitoring efforts0.14–1Estimated
pI Probability of having infecteds escape monitoring efforts0.1–1Estimated
  • *i = R, SF, VF, SC, VC.