Volume 8, Number 3—March 2002
Research
Immunization with Heterologous Flaviviruses Protective Against Fatal West Nile Encephalitis
Robert B. Tesh
, Amelia P.A. Travassos da Rosa, Hilda Guzman, Tais P. Araujo, and Shu-Yuan Xiao
, Amelia P.A. Travassos da Rosa, Hilda Guzman, Tais P. Araujo, and Shu-Yuan XiaoTable 5
Serologic response of hamsters following infection with St. Louis encephalitis virus (SLEV) strain Be Ar 23379 and subsequent challenge with West Nile virus (WNV)
| Hamster no. | HI antibody 30 days after SLEV infection | HI antibody titer 6 days WNV challenge | WN MAC-ELISA 6 days after WNV challenge | ||
|---|---|---|---|---|---|
| SLEV | WNV | SLEV | WNV | ||
| 8276 | NT | NT | 1:320 | 1:640 | 0.202a |
| 8277 | NT | NT | 1:320 | 1:640 | 0.185 |
| 8278 | 1:80 | 1:80 | 1:160 | 1:160 | 0.141 |
| 8279 | 1:80 | 1:80 | 1:160 | 1:160 | 0.165 |
| 8280 | 1:80 | 1:80 | 1:640 | 1:640 | 0.276 |
| 8281 | 1:40 | 1:20 | 1:640 | 1:640 | 0.555 |
| 8282 | 1:80 | 1:40 | 1:160 | 1:80 | 0.177 |
| 8283 | 1:80 | 1:80 | 1:160 | 1:160 | 0.166 |
| 8298 | 1:160 | 1:80 | 1:320 | 1:320 | 0.139 |
| 8299 | 1:320 | 1:320 | 1:640 | 1:640 | 0.240 |
NT = not tested. HI = hemagglutination inhibition.
aOptical density value (>0.200 is positive).
