Table 1. Disease characteristics and references.

Transition parameters are discretized to the modelling time step of 1 day. The hospitalization probability is conditional upon being symptomatic. A detailed description on the age dependent proportion of symptomatic cases can be found in the Supplementary section “Age-specific proportion symptomatic cases” of the manuscript by Willem et al. [21].

Parameter	Model value	References
Incubation period	5-7 days (uniform)	[30, 31]
Symptomatic period	4-6 days (uniform)	[31]
Infectious period	5-7 days (uniform)	[31]
Pre-symptomatic infectious period	2-3 days (uniform)	[31]
Hospitalization probability (0-18y)	0.05	[28, 32, 33]
Hospitalization probability (19-59y)	0.03	[28, 32, 33]
Hospitalization probability (60-79y)	0.12	[28, 32, 33]
Hospitalization probability (+80y)	0.60	[28, 32, 33]
Hospitalization delay (0-18y)	3 days	[28, 32, 33]
Hospitalization delay (19-59y)	7 days	[28, 32, 33]
Hospitalization delay (60-79y)	7 days	[28, 32, 33]
Hospitalization delay (+80y)	6 days	[28, 32, 33]
Infectiousness asymptomatic case	50%	[34]
Proportion of symptomatic cases	Age-dependent	[21, 35]
Children’s susceptibility	50%	[21, 36]