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Epidemiological Parameters
About Epidemiological Parameters
Common Variables and their Units
Using an SEIR model as an example lets discuss some common epidemiological parameters and what they mean. The figure shows the compartments for S=Susceptible, E=Exposed (but not yet infectious), I=Infectious (Shedding Virus), R=Recovered. The arrows show the transitions or people moving between the compartments in a specified time interval. See the page on compartment models.
What they mean
The table below shows the epidemiological parameters for the SEIR model shown above. Note that the UNITS or all or the parameters are inverse time.
Each of the parameters are rate constants, but the transmission rate &beta has a special role in that it appears inside a mass action term.
