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. 2013 Mar 21;9(3):e1002989. doi: 10.1371/journal.pcbi.1002989

Table 3. Summary of quantities linking the within-host and between-host scales.

symbol meaning
Inline graphic constant of proportionality connecting virus load and direct transmission rate
Inline graphic constant of proportionality connecting virus load and environmental transmission rate
Inline graphic duration of infectiousness, obtained from the within-host model (equation 10)
Inline graphic link-function to connect virus load with transmission, assuming linear relation (equation 12)
Inline graphic link-function to connect virus load with transmission, assuming linear relation modified by total shedding (equation 15)
Inline graphic link-function to connect virus load with transmission, assuming logarithmic relation (equation 16)