Table 3.
The estimated values of epidemiological parameters for highly pathogenic avian influenza of subtype H5N8 that infected poultry farms in the Netherlands in 2014 and 2016.
| Parameter | Estimates for the 2014 straina | Estimates for the 2016 straina | Sources for 2014 strain | Sources for 2016 strain |
|---|---|---|---|---|
| Chickens | ||||
| Length of latent period (days) | 2 | 1 | 41 | 23 |
| Length of infectious period (days) | 2.5 | 1.1 | 2,19,41–49 | 23 |
| % of infected animals dying from disease | 100 | 100 | 2,19,41–49 | 23 |
| Shape parameter of the gamma distribution for the latent and infectious periods | 20 | 20 | 2,41,45,46,48 | –b |
| Ducks | ||||
| Length of latent period (days) | 1 | 1 | 18 | 23 |
| Length of infectious period—survivors (days) | 8.5 | 6 | 18 | 23 |
| Length of infectious period—non-survivors (days) | 8.5 | 3.5 | 18 | 23 |
| % of infected animals dying from disease | 20 | 20 | 18 | 23 |
| Shape parameter of the gamma distribution for the latent and infectious periods | 20 | 20 | –b | –b |
aSee Supplementary Methods S2 for a description of the search terms and selection criteria that were used for the literature review and for a description of the estimation of parameter values from the literature data.
bIn the absence of sufficient data, we used the value estimated for the distributions of the latent and infectious period of chickens in 2014.