From: Age groups and spread of influenza: implications for vaccination strategy
parameter\age group | 0-2 | 3-5 | 6-7 | 8-14 | 15-21 | 22-64 | ≥ 65 |
---|---|---|---|---|---|---|---|
time-dependent vaccination rate ν i (t) | υ 1 (t) | 0 | 0 | 0 | 0 | 0 | υ 7 (t) |
0.7 | 0.7 | 0.7 | 0.7 | 0.5 | 0.5 | 0.4 | |
0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.7 | |
reduced fraction of asymptomatic infectives due to vaccination [8, 9] | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.6 |
mortality rate of untreated infectives δ i | 6 × 10-4 | 5 × 10-4 | 5 × 10-5 | 5 × 10-5 | 5 × 10-5 | 1 × 10-4 | 0.002 |
mortality rate of untreated vaccinated infectives * | 6 × 10-4 | 5 × 10-4 | 5 × 10-5 | 5 × 10-5 | 5 × 10-5 | 1 × 10-4 | 0.002 |
mortality rate of hospitalized infectives | 0.006 | 0.005 | 5 × 10-4 | 5 × 10-4 | 5 × 10-4 | 0.001 | 0.02 |
mean recovery rate of the hospitalized infectives ρ 1 | 1/4.85 | 1/4.72 | 1/4.45 | 1/4.56 | 1/5.55 | 1/9.16 | 1/16.94 |
hospitalization rate of unvaccinated symptomatic infectives h i | 0.007 | 0.007 | 0.007 | 0.007 | 0.007 | 0.007 | 0.09 |
hospitalization rate of vaccinated symptomatic infectives * | 0.007 | 0.007 | 0.007 | 0.007 | 0.007 | 0.007 | 0.06 |
per contact transmission probability of infectees in i th group β ij ≡ β i | 0.047 | 0.039 | 0.031 | 0.031 | 0.047 | 0.045 | 0.155 |
per contact transmission probability of infectors in i th group β ij ≡ β j | 0.083 | 0.029 | 0.045 | 0.008 | 0.040 | 0.056 | 0.078 |