Table 1. West Nile viral strains used for virulence studies in American Crows.
| Virus | Strain | Source | Passage historya | Location | Genetic lineageb |
|---|---|---|---|---|---|
| NY99 | NY99-4132 | American Crow (brain) | V1 | USA | I |
| KEN | KEN-3829 | Culex univittatus | V2 | Kenya | I |
| Kunjin (KUN) | KUN-6453 | Cx. annulirostris | V1, BHK1 | Australia | I |
aViruses were propagated in Vero (V) or baby hamster kidney (BHK) cells. Numbers following passage source represent the number of viral passages. bGenetic lineages as reported previously (9).