Table 1. Variables of the model. Index i indicates the cohort (normally student grade) and d the day of infection (running from 1 to 9, or 32 for influenza and COVID-19, respectively).
Variable | Interpretation |
---|---|
Si | Naïve persons in cohort i (for immunity, , where v is the fraction vaccinated and ve is the vaccine efficacy |
Ii,d | Infected persons in cohort i on day d of infection who are not isolated |
Hi,d | Similarly, but who are isolated (e.g., at home) |
Ri | Recovered in cohort i |