Table 4

Proportion of symptomatic cases that become severe and critical

ParameterDescriptionDemographic class
Age 1 (0–12)Age 2
(13–50) no comorbidities
Age 2 (13–50) comorbiditiesAge 3
(>50) no comorbidities
Age 3 (>50) comorbidities
Embedded Image(Embedded Image)Fraction of symptomatic cases severe0.064 (0.064)0.067 (0.066)0.199 (0.191)0.183 (0.178)0.445 (0.406)
Embedded Image(Embedded Image)Fraction of symptomatic cases critical0.0065 (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 Embedded Image to distribute individuals according to the desired proportions (values between parenthesis). The proportion of individuals recovering is computed as Embedded Image (see online supplemental materials for details).