Table 4

Proportion of symptomatic cases that become severe and critical

 Parameter Description Demographic class Age 1 (0–12) Age 2(13–50) no comorbidities Age 2 (13–50) comorbidities Age 3(>50) no comorbidities Age 3 (>50) comorbidities () Fraction of symptomatic cases severe 0.064 (0.064) 0.067 (0.066) 0.199 (0.191) 0.183 (0.178) 0.445 (0.406) () Fraction of symptomatic cases critical 0.0065 (0.009) 0.020 (0.028) 0.094 (0.129) 0.063 (0.088) 0.222 (0.289)
• Since the rates at which these cases become severe, critical or recover are different, we introduced three parameters to distribute individuals according to the desired proportions (values between parenthesis). The proportion of individuals recovering is computed as (see online supplemental materials for details).