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. 2020 Jun 5;138:109968. doi: 10.1016/j.chaos.2020.109968

Table 2.

Description of the model parameters.

Parameters Description
Π Rate of recruitment to the susceptible individuals
h Fraction of recruitment to the Se class because of past disease history
σ Rate of dissemination of information about the disease in the population
η Fraction of infected susceptible individuals who become carriers
ϕ Fraction of ‘educated’ individuals who get infected and become carriers
ρ Average effectiveness of existing self-preventive measures
α Rate of recovery for carrier individuals
θ Rate of transfer of carrier individuals to the sick class
ϵ Shedding rate from the C class to the environment
γ Rate of recovery for the sick class
δ Death rate due to coronavirus
ξ Shedding rate from the I class to the environment
ψ Virus decay rate from the environment
β1 Rate of disease transmission directly from humans
β2 Rate of disease transmission from the environment
K The pathogen concentration in the environment that yields 50% of chance
for a susceptible individual to catch the viral infection from the environment
ν Modification parameter (transmission of C relative to I)
φ Rate of loosing immunity after recovery
μ Natural death rate
ω Fraction of recovered individuals moving into the Se class after loosing immunity