Table 1.

Summary of model parameter values (excluding contact rates).

	Parameter	Value
η	latency rate	2.0/day or est.
γ	infectious rate	0.833/day
σ1	susceptibility of age-class 0 – 4 years	0.98 or est.
σ2	susceptibility of age-class 5 – 14 years	0.96 or est.
σ3	susceptibility of age-class 15 – 24 years	0.85 or est.
σ4	susceptibility of age-class 25 – 64 years	0.87 or est.
σ5	susceptibility of age-class 65+ years	0.73 or est.
S1(0)/N	frac. susceptible individuals 0 – 4 years at baseline	0.98 or 1.0
S2(0)/N	frac. susceptible individuals 5 – 14 years at baseline	0.96 or 1.0
S3(0)/N	frac. susceptible individuals 15 – 24 years at baseline	0.85 or 1.0
S4(0)/N	frac. susceptible individuals 25 –64 years at baseline	0.87 or 1.0
S5(0)/N	frac. susceptible individuals 65+ years at baseline	0.73 or 1.0
h1	infectivity of the infectious stage I1	16.1
h2	infectivity of the infectious stage I2	9.6
α, β	shape parameters of the Beta distribution in Eq. (18)	1.0
R	effective reproduction number	est.
I0	number of H1N1 cases at week 31	est.
ρ1	ILI reporting rate of H1N1 cases of age-class 0 – 4 years	est.
ρ2	ILI reporting rate of H1N1 cases of age-class 5 – 24 years	est.
ρ3	ILI reporting rate of H1N1 cases of age-class 25 – 64 years	est.
ρ4	ILI reporting rate of H1N1 cases of age-class 65+ years	est.
a, b	parameters defining the time dependent reporting see Eq. (25)	est.

Abbreviations: est.=estimated, frac.=fraction. See main text for a description of how parameter values were assigned or estimated.