TABLE 4.
Genotype comparison of H9N2 viruses in China reported in different publications
| Isolation yr | Reference | Previous genotype designation | Representative | Genotype | No. of viruses characterized |
|---|---|---|---|---|---|
| 1995-1999 | 21 | Ck/BJ/1/95 | B0 | 10 | |
| 1996-2002 | 17 | A and F | Ck/SD/6/96 | B0 | 18 |
| B | Ck/GD/6/97 | B-n1 | 2 | ||
| H and I | Ck/SH/10/01 | B-n2 | 3 | ||
| C and D | Ck/GX/9/99 | B-n3 | 2 | ||
| E | Ck/HLJ/35/00 | 1 | |||
| G | Ck/HN/26/00 | B-n4 | 1 | ||
| 1997-2002 | 25 | I and VI | Ck/Os/aq48/97 | B0 | 4 |
| II | Ck/Os/aq19/01 | B-n5 | 3 | ||
| III | Ck/Ko/aq26/01 | B-n6 | 2 | ||
| IV | Ck/Os/aq58/01 | B3 | 1 | ||
| V | Ck/Os/aq69/01 | B-n2 | 1 | ||
| 1998 | 23 | Ck/SH/F/98 | B-n2 | 1 | |
| 2000-2001 | 22 | Group 3 | Pg/NC/2-0461/00 | B0 | 7 |
| Group 1 | Qa/NC/2-0460/00 | B4 | 5 | ||
| Group 4 | Pg/NC/11-145/00 | B-n7 | 2 | ||
| Group 2 | Ck/NC/4-301/01 | B3 | 2 | ||
| 2000-2001 | 19 | Dk/ST1042/00 | B1 | 2 | |
| Dk/ST1796/00 | B3 | 5 | |||
| Dk/ST/830/00 | B4 | 1 | |||
| Dk/ST/2134/00 | B5 | 1 | |||
| Dk/ST/2102/00 | B-n8 | 1 | |||
| Dk/ST/4808/01 | B7 | 1 | |||
| Dk/ST/1605/01 | B-n6 | 1 | |||
| 2003 | 7 | C | Ck/HK/FY23/03 | B0 | 7 |
| A | Gf/HK/NT184/03 | B7 | 1 | ||
| B | Ck/HK/NT142/03 | B-n9 | 1 | ||
| D and F | Ck/CSW/153/03 | B-n10 | 8 | ||
| E | Pg/HK/WF53/03 | B-n11 | 1 | ||
| 2003 | 2 | Y280 | Ck/HK/WF126/03 | B0 | 2 |
| B | Ck/HK/NT142/03 | B-n9 | 1 | ||
| A | Gf/HK/NT184/03 | B7 | 4 | ||
| D | Ck/HK/YU463/03 | B-n10 | 1 | ||
| D+ | Ck/HK/YU577/03 | B-n10 | 4 |