TABLE 6.
Distribution of different H9N2 virus genotypes among different types of poultry from southern China
| Year | Genotype (no. of isolates)a
|
|||
|---|---|---|---|---|
| Chickens | Other minor poultry species | Quail | Ducksb | |
| 2000 | B3 (8) | B1 (2), B2 (1), B3 (1), B5 (2) | A0 (3), A1 (1), B1 (1), B2 (1), B3 (1) | B1 (2), B3 (5), B4 (1), B5 (1), B-n8 (1) |
| 2001 | B0 (3), B3 (8), B4 (2) | A0 (2), B3 (2), B4 (1), B7 (2) | A0 (4), A1 (3), A2 (1), B3 (1), B4 (1), B5 (3), B6 (1) | B3 (4), B7 (1), B-n6 (1) |
| 2002 | B3 (7), B17 (1), B18 (3) | B3 (2), B7 (5), B8 (2) | A0 (2), A3 (3), B3 (1), B7 (2), B8 (3) | B3 (2), B12 (1) |
| 2003 | B3 (3), B18 (2),B19 (1), B20 (1), B21 (5), B22 (1) | B2 (2), B3 (1), B7 (11), B12 (1), B21 (3), B23 (1) | A3 (7), B7 (6), B9 (1), B10 (1), B11 (1), B12 (1), B13 (1) | B3 (1), B7 (1), B21 (2) |
| 2004 | B3 (5), B18 (2), B21 (1), B7 (4), B12 (1), B14 (5), B15 (1), B25 (2) | B3 (1), B7 (16), B8 (1), B14 (8), B15 (2), B24 (1) | A3 (5), B7 (1), B14 (2), B15 (3) | B21 (1) |
| 2005 | B3 (2), B7 (1), B14 (14), B15 (21), B25 (1), B16 (1), B26 (1), B27 (1), B28 (3), B29 (1) | A4 (1), B3 (1), B7 (2), B14 (1), B15 (1), B16 (3) | A3(4), B8 (3), B14 (1), B15 (2), B16 (2) | B15 (1) |
a
Number of isolates recognized among representative strains tested.
b
Viruses characterized in reference 19 were also included.