Volume 10, Number 12—December 2004
Research
Differential Virulence of West Nile Strains for American Crows
Table 3
Cross-neutralization immune response of American Crows at 14 days postinfection with either KEN or KUN viruses
Sample no. | Inoculation | NY99 | KEN | KUN | Difference |
---|---|---|---|---|---|
Crow 8 | KEN | 640a | 640b | NT | 0 |
Crow 1 | KUN | 80 | NTc | 160 | 2-fold |
Crow 2 | KUN | 80 | NT | 80 | 0 |
Crow 3 | KUN | 160 | NT | 320 | 2-fold |
Crow 4 | KUN | 40 | NT | 80 | 2-fold |
Crow 5 | KUN | 40 | NT | 40 | 0 |
Crow 6 | KUN | 20 | NT | 20 | 0 |
Crow 7 | KUN | 80 | NT | 80 | 0 |
Crow 8 | KUN | 80 | NT | 160 | 2-fold |
aValues represent the greatest reciprocal dilution in which ≥90% plaque inhibition was achieved as compared to sera-negative control cultures.
bHomologous titers are depicted in bold print.
cNT, not tested; KEN, West Nile virus strain from Kenya; KUN (Kunjin), West Nile virus strain from Australia.