Table 1 Virulence change of G1 and ZB virus during mouse adaption
From: Mouse-adapted H9N2 avian influenza virus causes systemic infection in mice
Virus | MLD50 (log10EID50ml− 1) | Change in MLD50 (log10decrease) |
|---|---|---|
G1 | > 6 | NAa |
ZB | > 6 | NA |
G1-MA | 3.85 | > 2.15 |
ZB-MA | 3.25 | > 2.75 |