Notation

Definition

Value

${\beta }_p$

disease transmission rate for primary strain

0.75 per day per person (assumed)

${\beta }_s$

disease transmission rate for secondary strain

0.50 per day per person (assumed)

${\gamma }_p$

recovery rate for primary strain

0.30 per day (assumed)

${\gamma }_s$

recovery rate for secondary strain

0.20 per day (assumed)

$\mu$

mutation rate from primary to secondary strain (when considered)

0.05 (5%) (assumed)

$e_p$

effectiveness of vaccination against primary strain

$\left[0,1\right]$ (assumed)

$e_s$

effectiveness of vaccination against secondary strain

$\left[0,e_p\right]$ (assumed)

${\eta }_p$

efficiency of self-protection (IDM) against primary strain

$\left[0,1\right]$ (assumed)

${\eta }_s$

efficiency of self-protection (IDM) against secondary strain

$\left[0,{\eta }_p\right]$ (assumed)

$\kappa$

selection parameter

0.1 [1] [59]