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. 2011 Nov 14;6(11):e27420. doi: 10.1371/journal.pone.0027420

Table 1. Transmission model parameter values.

Variable Age group Value (range) Source
Total population size All 31,612,905 [44]
Life expectancy (years) All 75.3 [45]
Latent period (days) All 2.5 [46]
Duration of infectiousness (days) All 3.5 [46]
Basic reproductive number All 1.6 (1.4–1.9) Model calibration
Duration of immunity (years) Model calibration and assumption
Following infection All 1.3 (1–2)
Following vaccination All 1 (1–2)
Proportion vaccinated <1 0.12 [17], [47]
1–5 0.28
6–19 0.30
20–64 0.33
≥65 0.75
Vaccine efficacy [9], [10], [19], [20], [21] and model calibration
Trivalent influenza vaccine (TIV) <6 0.5 (0–0.83)
6–64 0.9 (0.7–0.9)
≥65 0.2 (0–0.2)
Adjuvanted influenza vaccine (ATIV) <6 0.9 (0–0.9)
≥65 0.4 (0.2–0.4)