Volume 11, Number 12—December 2005
Research
Postepizootic Persistence of Venezuelan Equine Encephalitis Virus, Venezuela
Juan-Carlos Navarro*, Gladys Medina†, Clovis Vasquez‡, Lark L. Coffey§, Eryu Wang§, Alexander Suárez*‡, Hernán Biord#, Marlene Salas¶, and Scott C. Weaver§
Table 2
Serologic results from equines, bovines, and wild mammals in regions of the 2000 and 2003 VEEV outbreaks*
| Location | Dates of collection | Species or common name | No. collected | Fraction HI seropositive | Fraction of HI-positive samples positive by PRNT | PRNT titers |
|---|---|---|---|---|---|---|
| Obispos | May 2002 | Proechimys guairae | 10 | 0/10 | NT | NT |
| Zygodontomys brevicauda | 47 | 0/47 | NT | NT | ||
| Zamora | May 2003 | Akodon urichi | 2 | 0/2 | NT | NT |
| Oryzomys talamancae | 1 | 0/1 | NT | NT | ||
| Sigmodon hispidus | 13 | 0/13 | NT | NT | ||
| Zygodontomys brevicauda | 1 | 0/1 | NT | NT | ||
| Didelphis marsupialis | 2 | 0/2 | NT | NT | ||
| Proechimys guairae | 18 | 0/18 | NT | NT | ||
| Rattus rattus | 2 | 0/2 | NT | NT | ||
| Bovines | 4 | 0/4 | NT | NT | ||
| June 2003 | Proechimys guairae | 6 | 1/6 | 0/1 | <20 | |
| Sep 2003 | Didelphis marsupialis | 1 | 1/1 | 0/1 | <20 | |
| Proechimys guairae | 11 | 4/11 | 0/4 | <20 | ||
| Sigmodon hispidus | 1 | 1/1 | 0/1 | <20 | ||
| Bovines | 20 | 0/20 | NT | NT | ||
| Nov 2003 | Proechimys guairae | 10 | 0/10 | NT | NT | |
| Sigmodon hispidus | 1 | 1/1 | NT | NT | ||
| Arismendi | Oct–Nov 2003 | Bovines | 48 | 12/48 | 8/12 | 40–640 |
| Antonio Jose de Sucre/Zamora | June 2003 | Proechimys guairae | 3 | 0/3 | NT | NT |
| Didelphis marsupialis | 1 | 0/1 | NT | NT | ||
| Totals | Wild mammals | 130 | 7/130 (5%) | 0/7 | <20 | |
| Bovines | 72 | 12/72 (17%) | 8/12 | 40–640 |
*VEEV, Venezuelan equine encephalitis virus; HI, hemagglutination inhibition; PRNT, plaque reduction neutralization test; NT, not tested.
