Table 1

Parameters describing the transmissibility and pathogenicity of influenza virus.

Parameter
Baseline values
Sources

Infectivity profiles

Adapted from [13], and consistent (to a scale factor) with [10,15–21]
     Latent period
0.5 days

     Peak
2.5–3 days

     Duration
<10 days

Relative susceptibility

[5,13]
     Children (0–18 years)
1.15

     Adults (19–65 years)
1

     Elderly (>65 years)
1

Proportion of asymptomatic individuals (children, adults, elderly people)
30%
[48]; also used in [6]
Relative infectivity of asymptomatic individuals
50%
Assumption also used in [6]

Carrat et al. BMC Medicine 2006 4:26   doi:10.1186/1741-7015-4-26