Table 4.
The farm-specific estimates of transmission parameter according to method A (see text) and the corresponding mean times of virus introduction and introduction windows for outbreaks of highly pathogenic avian influenza of subtype H5N8 on poultry farms in the Netherlands in 2014 and 2016.
| Farm identifiera | Farm type | Type of estimate | Mean time of virus introduction (days) | Virus introduction window (days) | |
|---|---|---|---|---|---|
| MLEb | 95% confidence bounds | ||||
| Chickens 2014 | |||||
| A | Layer | 5 | (4.4–5.6) | 14.8 | (14.3–15.3) |
| B | Layer | 34.4 | (27.3–44.1) | 9.8 | (9.5–10.2) |
| C | Layer | 4.4 | (2.2–11.4) | 11.8 | (9.8–14.5) |
| Chickens 2016 | |||||
| F | Layer | 8.5 | (7.1–10.6) | 7.4 | (6.9–7.8) |
| C | Layer | 10.9 | (6–21.4) | 5.9 | (5.1–6.9) |
| Ducks 2016 | |||||
| H | Meat duck | 1.6 | (1–2.6) | 14.5 | (12.3–18.1) |
| I | Meat duck | 11.8 | (8.3–18.1) | 9.5 | (8.8–10.2) |
| E | Meat duck | 0.95 | (0.3–2.3) | 18.8 | (12.9–51) |
aOnly farms for which parameter transmission parameter could be estimated are shown.
bMaximum likelihood estimate.