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Table 2 List of parameters used in the transmission model for COVID-19 in Ontario, Canada

From: Quantifying the shift in social contact patterns in response to non-pharmaceutical interventions

  Definition Mean (Std) Source
Parameter    
\(p_{1}^{H}\) Relative increase of the weight of the contact matrix for household settings from phase 0 to phase 1 0.1320 (0.0866) Estimated
\(p_{1}^{C}\) Relative increase of the weight of the contact matrix for community settings from phase 0 to phase 1 0.0685 (0.0642) Estimated
\(p_{2}^{H}\) Relative increase of the weight of the contact matrix for households from phase 1 to phase 2 0.2832 (0.1807) Estimated
\(p_{2}^{C}\) Relative decrease of the weight of the contact matrix for community settings from phase 1 to phase 2 0.3283 (0.1575) Estimated
\(p_{3}^{H}\) Final relative increase of the weight of the contact matrix for household settings in phase 3 0.0436 (0.0593) Estimated
\(p_{3}^{W}\) Final relative decrease of the weight of the contact matrix for workplace settings in phase 3 0.5921 (0.0820) Estimated
\(p_{3}^{C}\) Final relative decrease of the weight of the contact matrix for community settings in phase 3 0.7888 (0.1697) Estimated
\(r_{H}\) Exponential increase in household contact rate 0.0379 (0.0532) Estimated
\(r_{W}\) Exponential decrease in workplace contact rate 0.4711 (0.0853) Estimated
\(r_{C}\) Exponential decrease in community contact rate 0.1019 (0.0461) Estimated
\(\beta_{i}\) Probability of transmission per contact, age-dependent Table 4 Estimated
\(q_{0}\) Fraction of quarantined exposed individuals phase 0–2 0.1187 (0.0645) Estimated
\(q_{b}\) Maximum fraction of quarantined individuals exposed 0.7272 (0.0583) Estimated
\(r_{q}\) Exponential increase in quarantine fraction 0.0282 (0.0022) Estimated
σ Transition rate of exposed individuals to the infected class 1/5 [18]
λ Rate at which the quarantined uninfected contacts were released into the wider community 1/14 [5]
ϱ Probability of having symptoms among infected individuals 0.7036 [2]
\(\delta _{Ii}\) Transition rate of symptomatic infected individuals to the quarantined infected class Table 4 Estimated
\(\delta _{q}\) Transition rate of quarantined exposed individuals to the quarantined infected class 0.3409 (0.1137) Estimated
\(\gamma _{I}\) Removal rate of symptomatic infected individuals 0.1957 [2]
\(\gamma _{A}\) Removal rate of asymptomatic infected individuals 0.139 [5]
\(\gamma _{D}\) Removal rate of quarantined diagnosed individuals 0.2 [19]
α Disease-induced death rate 0.008 [19]
θ Modification factor of asymptomatic infectiousness 0.0275 [2]
Initial values    
\(S_{i} (0)\) Initial susceptible population Table 4 Data [20]
\(E_{i} (0)\) Initial exposed population Table 4 Estimated
\(I_{i} (0)\) Initial symptomatic infected population Table 4 Estimated
\(A_{i} (0)\) Initial asymptomatic infected population Table 4 Estimated
\(S_{q_{i}}(0)\) Initial quarantined susceptible population 0 Assumed
\(E_{q_{i}}(0)\) Initial quarantined exposed population 0 Assumed
\(D_{i} (0)\) Initial diagnosed population Table 4 Incidence data
\(R_{i} (0)\) Initial recovered population 0 Assumed
  1. For the estimated parameters, we report the mean and standard deviation of the fitting results of the 1000 bootstrap realizations. For non-fitted parameters, the source is reported.