The case fatality ratio is given by: CFR = mu / (mu + gamma), where mu is the rate of death (I->D) and gamma is rate of recovery (I->R). The most intuitive way to parameterise this is by: mu = eta CFR and gamma = eta (1-CFR), where 1/eta is the average time until death / recovery. For the age-dependent models, this would require both mu and gamma to vary by age since CFR does.
Currently, we do not allow gamma to vary by age (whilst mu can), but as per the above I think we want this.
ben18785
commented
2 years ago
The case fatality ratio is given by: CFR = mu / (mu + gamma), where mu is the rate of death (I->D) and gamma is rate of recovery (I->R). The most intuitive way to parameterise this is by: mu = eta CFR and gamma = eta (1-CFR), where 1/eta is the average time until death / recovery. For the age-dependent models, this would require both mu and gamma to vary by age since CFR does.
Currently, we do not allow gamma to vary by age (whilst mu can), but as per the above I think we want this.