A horse in Orange County, Virginia, has tested positive for West Nile Virus (WNV), according to the Virginia Department of Agriculture and Consumer Services (VDACS). The affected animal is an unvaccinated quarter horse gelding that began showing neurological symptoms before being tested. The horse is currently quarantined on its property and is reportedly improving. No other horses at the same location have shown signs of WNV.
VDACS is urging horse owners to consult with veterinarians about vaccinating their animals against both WNV and Eastern Equine Encephalitis (EEE). According to VDACS, “The mortality rate for WNV is 30 percent and up to 90 percent for EEE. Vaccinations are effective for six to 12 months.” Both diseases are spread by mosquitoes.
Symptoms of these illnesses can include staggering, circling, depression, loss of appetite, fever, and blindness. There are no cures for either disease; however, vaccination can prevent infection. Other recommended preventive measures include eliminating standing water where mosquitoes breed, using insect repellents, and keeping animals away from mosquito-heavy areas during peak activity times from dusk to dawn.
VDACS also notes that after a horse is bitten by an infected mosquito, it may take three to ten days before symptoms appear. For more information on controlling mosquitoes around horses or about these diseases in general, VDACS directs owners to its website at www.vdacs.virginia.gov/animals-eastern-equine-encephalitis.shtml or recommends contacting the Office of Veterinary Services or a local veterinarian.
