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Antigenic characterization of H9N2 isolates from pigs
| Virus | Result of HAI test using ferret antiseraa to:
|
||
|---|---|---|---|
| Qa/HK/G1/97b | Ck/HK/G9/97b | Sw/HK/9/98 | |
| Sw/HK/2106/98 | <40 | 2,560 | 80 |
| Sw/HK/9/98 | <40 | 640 | 640 |
| Sw/HK/10/98 | <40 | 640 | 320 |
| Sw/HK/3297/98 | 40 | 5,120 | 320 |
| Qa/HK/G1/97b | 640 | <40 | <40 |
| Ck/HK/G9/97b | <40 | 2,560 | 640 |
Provided by A. Hay, Mill Hill, London, United Kingdom.
Representatives of two main lineages of H9N2 viruses. Ck/HK/G9/97 is used as a representative of the Dk/HK/Y280/97 lineage.
