Table 2.
Level and duration of virus excretion of the highly pathogenic avian influenza virus A/chicken/Netherlands/emc-3/2014 (H5N8) GsGd clade 2.3.4.4 (group A, Buan-like) from the pharynx and cloaca in four duck species, based on virus isolation
| Height and duration of virus excretion per route | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pharynx | Cloaca | |||||||
| Common name (taxonomic name) | AUC (mean ± SEM) | Median (dpi) | Peak (dpi) | Range (dpi) | AUC (mean ± SEM) | Median (dpi) | Peak (dpi) | Range (dpi) |
| Eurasian wigeon (Anas penelope) | 7.2 ± 2.1 | 2.5 | 2.5 | 0–8 | 2.4 ± 0.3 | 1 | 3.5 | 0–5 |
| Common pochard (Aythya ferina) | 2.7 ± 0.3 | 1 | 1 | 0–4 | 2 ± 0 | 0 | 0 | 0 |
| Mallard (Anas platyrhynchos) | 2.7 ± 0.4 | 0 | 2 | 0–4 | 2 ± 0 | 0 | 0 | 0 |
| Common teal (Anas crecca) | 3.9 ± 1.0 | 2 | 2.5 | 0–4 | 2.3 ± 0.2 | 0 | 3 | 0–5 |
The minimal detection limit of virus isolation was 0.5 TCID50/ml and minimal area under the curve (AUC) from day 0 to 4 post inoculation was 2. AUC, area under the curve summarizes infectious virus excretion from day 0 to 4 post inoculation; dpi, days post inoculation