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| Virus | Post-infection ferret sera raised against | ||||
|---|---|---|---|---|---|
| A/NL/109/03 (H3N2) |
A/NL/282/09 (H3N2) |
rH7NA03* (H7N2) |
rH7NA09* (H7N2) |
||
| A/NL/109/03 (H3N2) | H3N2 | 2560 | 960 | <10 | <10 |
| A/NL/761/09 (H3N2) | H3N2 | 20 | 160 | 30 | 160 |
*Recombinant H7 virus with NA from 2003 or 2009 viruses [23].
