Table 3. Distribution of subtypes of avian influenza prevalence in chickens in Dhamrai and Gazipur, Bangladesh (n = 45 AIV positive).
| Group | H5N1 | H5N2 | H9N1 | H9N2 | HxN1 | HxN2 | N6 | N8 | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Broiler | 6 | 4 | 1 | 2 | 0 | 1 | 0 | 0 | 2 | 16 |
| Layer | 2 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 7 | |
| Sonali | 6 | 6 | 2 | 1 | 4 | 2 | 0 | 0 | 1 | 22 | |
| Flock size | Large (>1,500) | 2 | 8 | 2 | 3 | 2 | 1 | 0 | 2 | 20 | |
| Medium (1,000–1,500) | 11 | 3 | 1 | 0 | 1 | 2 | 2 | 20 | |||
| Small (500–1,000) | 1 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 5 | |
| Biosecurity | Good | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 4 |
| Moderate | 2 | 4 | 1 | 1 | 1 | 1 | 0 | 0 | 2 | 12 | |
| Poor | 12 | 8 | 1 | 2 | 3 | 1 | 0 | 0 | 2 | 29 | |
| Total | 14 (31.11%) | 13 (28.89%) | 3 (6.67%) | 4 (8.89%) | 4 (8.89%) | 3 (6.67%) | 0 | 0 | 4 (8.89%) | 45 | |