Table 2.
Prevalence of avian respiratory viruses in commercial broilers and layer chicken farms in Egypt (2016–2017).
| No. of positive flocks (%) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Single infection | Mixed | ||||||||||||||
| Governorate | Production type | H5N1 | H5N8 | H9N2 | ND | ILT | H5N1-ND | H9N2-IB | H9N2-ILT | H9N2-ND | H5N1/H9N2- ND | H5N1/H9N-H5N8 | H9N2-ND-IB | H5N1-H9N2 –ND-IB | Negative |
| Sharkia | Broiler N = 17 | 1 | 0 | 4 | 5 | 0 | 1 | 1 | 0 | 3 | 1 | 0 | 0 | 0 | 1 |
| Layers N = 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | |
| Beni-Suef | Broiler N = 5 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Layers N = 3 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Giza | Broiler N = 6 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 |
| Layers N = 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
| Behaira | Broiler N = 10 | 1 | 0 | 1 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Layers N = 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | |
| Qalubia | Broiler N = 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Layers N = 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Total | Broilers N = 39 (%) | 3 (7.7) | 1 (2.6) | 8 (20.5) | 13 (33.3) | 0 | 1 (2.6) | 1 (2.6) | 1 (2.6) | 3 (7.7) | 1 (2.6) | 0 | 0 | 1 (2.6) | 6 |
| Layers N = 11 (%) | 2 (18.1) | 0 | 0 | 0 | 2 (18.1) | 0 | 1 (9.1) | 0 | 3 (27.3) | 0 | 1 (9.1) | 1 (9.1) | 0 | 1 | |