Table 4.
Cross-reactivity of postinfection ferret sera against H3 influenza viruses in a neutralization assay
| Virus | Titer of ferret antisera raised against: |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| sw/CO/77 | sw/Ukk/84 | sw/ONT/01 | sw/IA/02 | eq/ROM/80 | eq/GA/81 | eq/Newm/03 | an-plath/SP/06 | npin/AK/06 | tl/TX/079/07 | mal/MN/0169/07 | |
| sw/CO/77 | 2,560/5,120a | 640/160 | 10b | 10/10 | 10/10 | 40/40 | 10 | 10 | 10 | 25/20 | 57/80 |
| sw/Ukk/84 | 320/508 | 10,240/12,902 | 10 | 10/10 | 101/127 | 63/113 | 10 | 10 | 10 | 16/28 | 50/160 |
| sw/ONT/01 | 10/10 | 10/10 | 320 | 10/10 | 10/10 | 10/10 | 57 | 202 | 28 | 806/508 | 254/1,613 |
| sw/IA/02 | 113/50 | 113/50 | 10 | 226/226 | 226/202c | 226/508 | 57 | 10 | 226 | 101/127 | 453/508 |
| eq/ROM/80 | 10/10 | 113/160 | 10 | 10/10 | 640/806 | 1,280/453 | 80 | 10 | 10 | 101/113 | 50/54 |
| eq/GA/81 | 10/10 | 202/57 | 10 | 10/10 | 905/1,810 | 1,613/1,280 | 226 | 10 | 10 | 10 | 28/226 |
| eq/Newm/03 | 10/10 | 160/57 | 10 | 28/20 | 806/806 | 806/640 | 453 | 10 | 10 | 40/57 | 113/905 |
| an-plath/SP/06 | 10 | 10 | 640 | 10 | 10 | 10 | 113 | 640 | 101 | 1,280/905 | 226/1,810 |
| npin/AK/06 | 10/10 | 10/10 | 57 | 10/10 | 10/10 | 57/10 | 226 | 160 | 226 | 403/403 | 113/1016 |
| tl/TX/079/07 | 10/10 | 10/10 | 320 | 10/10 | 20/57 | 57/10 | 113 | 254 | 113 | 1016/1280 | 320/3620 |
| mal/MN/0169/07 | 10/10 | 10/10 | 57 | 28/10 | 57/113 | 127/50 | 113 | 226 | 226 | 1280/1280 | 905/7241 |
a
Sera from 1 or 2 animals were collected 28 days postinoculation. Homologous neutralizing antibody titers are indicated in boldface.
b
The lower limit of detection was assigned a value of 10.
c
Underlined titers indicate cross-reactive antisera with titers within 4-fold of homologous titers.