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Table 1 Model parameters

From: Reducing travel-related SARS-CoV-2 transmission with layered mitigation measures: symptom monitoring, quarantine, and testing

Variable Definition Values used
t Time of transmission risk from traveler relative to time of travel Ranges: 0–1 days while traveling, 0–28 days after travel
τ Time of infection risk to traveler relative to time of travel 0 or ranges: 1–7 days pre-departure, 1–7 days pre-arrival
I(t, τ) Infectiousness Functions shown in Fig. 1a [27, 51, 59]
σ0 Proportion of infected individuals that develop symptoms 70%, 50%
σ(t, τ) Cumulative probability of developing symptoms among individuals who develop symptoms Log-Normal cumulative distribution function [61]
t0 Time of quarantine relative to the time of travel 0
Q Adherence to quarantine 100%, 50%
TQ Duration of quarantine starting at t0 7, 10, 14 days
tk Time of test k 6 days pre-departure to 7 days post-arrival
ρ(tk, τ) Probability of a positive test Functions shown in Fig. 1b
ϵ(τ) Risk of infection Uniform distribution