Volume 9, Number 7—July 2003
Dispatch
Serologic Evidence of West Nile Virus Infection in Horses, Yucatan State, Mexico
María A. Loroño-Pino*†, Bradley J. Blitvich*, José A. Farfán-Ale†, Fernando I. Puerto†, José M. Blanco‡, Nicole L. Marlenee*, Elsy P. Rosado-Paredes†, Julian E. García-Rejón†, Duane J. Gubler§, Charles H. Calisher*, and Barry J. Beaty*
Table 2
Summary of horses with HI assay or epitope-blocking ELISA antibodies to flavivirusesa
| Horse | Sampling date | Study site | Age (y) | Sex | Clinical symptoms | Outcome | HI assay titer | % inhibition by blocking ELISAb |
|
|---|---|---|---|---|---|---|---|---|---|
| 3.1112Gc | 6B6C-1d | ||||||||
| H-60 |
July 2, 2002 |
Merida |
8 |
Male |
Gastrointestinal (recurrent colic) |
Survived |
10 |
0 |
59 |
| H-117 |
July 5, 2002 |
Tizimin |
7 |
Male |
None |
Survived |
10 |
84 |
93 |
| H-126 |
July 5, 2002 |
Tizimin |
2 |
Male |
None |
Survived |
40 |
87 |
93 |
| H-134 |
July 5, 2002 |
Tizimin |
3 |
Female |
None |
Survived |
10 |
11 |
0 |
| H-141 |
July 5, 2002 |
Tizimin |
10 |
Male |
None |
Survived |
80 |
5 |
47 |
| H-252 | Oct. 15, 2002 | Caucel | 3 | Male | Neurologic and muscular symptoms | Euthanized | 20 | 64 | 25 |
aHI, hemagglutination-inhibition; ELISA, enzyme-linked immunosorbent assay.
bInhibition values >30% are considered significant.
cMAb 3.1112G is WNV-specific.
dMAb 6B6C-1 is flavivirus group–reactive.
