Symbols | Signification |
---|---|
n | Index of time step |
State variables | |
Un, En, An | Number of individuals in the active transmission layer of the tested population (Uninfected, Exposed, Asymptomatic) |
sn, en, in | Number of individuals in the active transmission layer of the large-scale model (susceptible, exposed, infectious) |
Fn, Tn, Sn | Number of individuals in the isolation layer of the tested population (False positive, True positive, Symptomatic) |
Rn, Dn | Number of individuals in the removed layer of the tested population (Recovered, Dead) |
rn | Number of individuals in the removed layer of the tested population |
Parameters of the University model | |
nU | Population size [individuals] |
Se, Sp | Test sensitivity and specificity |
β | Transmission rate (Asymptomatic → Uninfected) [day−1] |
τ | Testing rate [day−1] |
fp | Percentage of participation to testing [−] |
μ | Rate of return to testing pool after isolation [day− 1] |
θ | Incubation rate [day−1] |
σ | Rate of symptom development [day−1] |
ρ | Recovery rate [day−1] |
δ | Death rate [day−1] |
Parameters of the external population model | |
nE | Population size [individuals] |
b | Transmission rate (infectious → susceptible) [day−1] |
q | Incubation rate [day−1] |
r | Recovery + symptom development rate [day−1] |
Coupling between the two populations | |
κ, k | Cross-transmission rates [day−1] |