Parameter | Value | Reference |
---|---|---|
α – rate of loss of maternal immunity | 1/α = 9 months | Lieberman et al. [13] |
Ψ – proportion of babies born with maternal immunity | 0.13 (males) 0.17 (females) | Pienter study (de Melker et al.[11]; van den Hof et al.[12]) |
γ – rate of recovery from infection | 1/ γ = 5 weeks | Leach [10] |
ϕ – proportion of travel-related cases (used during fitting only) | 0.356 | van der Eerden et al. [8] |
βdom,a (t) – transmission rate (domestic), t=2000, for age-groups {<1, 1–4, 5–9, 10–14, 15–19, 20–24, 25–29, 30–34, 35–39, 40–59, 60+} | {0.114,20.5,41.0,27.3,9.11, 0.114,0.114,0.455,6.83, 4.55,9.11} | Estimated |
βtrav (t) – transmission rate (travel-related), t=2000, age-independent | 0.0000505 | Estimated |
λa(t) – force of infection, age-group specific: sum of domestic and travel-related transmission: λdom,a(t)+ λtrav(t) |
λ trav (t) = β trav (t) | Srinivasa Rao et al. [18] |
b – birth rate | Sex and year dependent; age group <1 only | Estimated from data held by Statistics Netherlands |
η – net rate of demographic factors (mortality, immigration, emigration) | Sex, age-group, and year dependent | Estimated from data held by Statistics Netherlands |