Table 1. Model parameters.

The parameters are divided under four topics.

Topic	Parameter	Meaning	Prior	Source
Susceptibility:	pa	Probability for a susceptible in age group a to acquire infection per contact with an infectious host within the population	Uniform(0, 1)	Uninformative
	qa	Inflow of infection (probability to acquire infection from outside the population per week) in age group a	Beta(0.1, 1)	Assumed to be small
Transmission:	wt	Transmission random effect at week t	2 LogitNormal(0.5, 1)*	Uninformative
Severity:	$s_a^{\left(\text{sev/inf}\right)}$	Hospitalization/infection ratio in age group a	LogitNormal(0.01, 0.1)	[13]
	$s_a^{\left(\text{IC/sev}\right)}$	IC/hospitalization ratio in age group a	LogitNormal(0.1, 0.1)	[13]
Detection:	$d_t^{\left(\text{mild}\right)}$	Mild case detection probability at week t	LogitNormal(0.01, 0.01)*	[14][15][16]
	d(hosp)	Hospitalized non-IC case detection probability	LogitNormal(0.75, 0.1)	Expert opinion

Here the LogitNormal(x, y) means a distribution of a random variable for which the logit transformation has a normal distibution with mean logit(x) and variance y.

* An autocorrelated prior is constructed for both w_t and $d_t^{\left(\text{mild}\right)}$; see Prior specifications