Idahoans should take extra precautions when spending time in areas with WNV-carrying mosquitoes and make sure any animals traveling are properly prepared.
BOISE, Idaho — Idaho’s first equine case of west nile virus (WNV) was recently reported in Gooding County by an Idaho State Department of Agriculture (ISDA) animal health laboratory.
Common symptoms of WNV in horses include fever and weakness, which can usually be seen in the horse’s hindquarters from a wider stance, stumbling, leaning to one side, or dragging of the toes. In extreme cases, horses can lose the ability to stand or even become paralyzed.
Mental symptoms such as lip smacking or chewing movements and fine muscle tremors may also develop; some horses may also show a general fear as a symptom.
The positive case was detected in Gooding County, but the horse is now recovering under the care of a veterinarian. Vaccination and physical precautions may be two of the most effective ways to deter infection, according to ISDA recommendations.
“The WNV vaccine continues to be an essential preventative measure and should be given annually to provide an adequate level of protection against the virus,” said Idaho State Veterinarian Dr. Scott Leibsle. “Nearly 98 percent of horses that test positive for WNV are either unvaccinated or undervaccinated. Horse owners should discuss WNV vaccination and other required annual core vaccinations with their veterinarians, as well as how to follow up.” an annual booster schedule. Horses that have been vaccinated against WNV in previous years should receive annual boosters; a single vaccination is not enough.”
WNV is usually spread through the bites of infected mosquitoes. Community members should take extra precautions when spending time in areas with WNV-carrying mosquitoes and ensure that any traveling animals are properly prepared.
To protect against mosquito bites, Idaho residents should wear long-sleeved shirts and long pants during hours of mosquito activity, dusk to dawn, and use insect repellant as directed on the label. Homeowners should also check that screens are in good condition and repair any damage or holes.
Precautions to protect your animals may include using fans and repellents to keep mosquitoes away, and removing or treating any standing water near the property that may breed more mosquitoes.
“There is no vaccine for people,” said Dr. Leslie Tengelsen, a state public health veterinarian with the Idaho Department of Health and Welfare. “Although most infections in people are mild, some people can become seriously ill. Avoid mosquito bites by taking simple precautions.”
More information about the virus or where it has been detected in Idaho is available at Idaho Department of Health and Welfare website.
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