As autumn approaches, and horse owners are starting to think about phoning their veterinarians to set up their horses' fall vaccinations, now is a good time for a West Nile Virus booster since the number of West Nile virus (WNV) cases confirmed in U.S. horses continues to rise slowly.
Recommended: West Nile Virus boosters for horses
According to preliminary data released Sept. 5 by the U.S. Department of Agriculture Animal Health Monitoring and Surveillance, 64 cases of WNV in horses have been confirmed in 23 states thus far in 2013.
According to preliminary data released Sept. 5 by the U.S. Department of Agriculture Animal Health Monitoring and Surveillance, 64 cases of WNV have been confirmed in 23 states thus far in 2013.
As of Aug. 16, the California Department of Food and Agriculture (CDFA) reported that two additional horses in that state had tested positive for WNV. The affected horses are "a 1-year-old unvaccinated Andalusian colt in Sacramento County and a 4-year-old Morgan mare of unknown vaccination status in Placer County. Both horses are recovering."
The CDFA's statement also indicated that a total of eight horses have been confirmed positive for WNV in 2013. They were located in Kern, Placer, Riverside, Sacramento (3), and Stanislaus (2) Counties. Four of those were euthanized.
In 2012, California confirmed 22 equine WNV cases.