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|Quick Facts About Eastern Equine Encephalitis Virus (EEEV)|
Eastern equine encephalitis virus (EEEV) is transmitted by the bite of an infected mosquito, advises the Centers for Disease Control (CDC). The virus is rare and causes inflammation of the brain called encephalitis. Animals, especially horses, are vulnerable to this infection.
"All equine cases are the result of mosquitoes which have fed on infected birds and then feed on unvaccinated horses, " advises Wayne Crans, Entomology Research Professor in Questions Regarding Eastern Equine Encephalitis and Horses. Horses are increasingly susceptible to the EEEV infection. The virus involved attacks the horse's central nervous system. "Onset is abrupt and horse cases are almost always fatal," he says.
Symptoms evident in horses infected with the virus include marked loss of coordination, unsteadiness and erratic behavior. Other signs to be aware of in horses are loss of appetite, drooping eyelids and lower lip, depression, blindness, aimless wandering and circling, and occasional paralysis. The treatment that may be provided by your veterinarian or emergency animal hospital is typically ineffective. Crans reports that after the first indications of illness in an animal "seizures resulting in death usually occur within 48 to 72 hours."
"The greater the number of infected mosquitoes, the greater the risk," says Dr. Alfred DeMaria, Wisconsin's top disease tracker," so preventing mosquito bites becomes even more important." Protecting yourself and your horse can be enhanced by following the suggestions made by the CDC and the Wisconsin Department of Agriculture, Trade and Consumer Protection.
▪ Provide nighttime shelter for horses from hungry mosquitoes by housing them in a barn.
▪ Wash out horse troughs frequently to reduce the breeding of mosquitoes near paddock areas.
▪ Eliminate sources of standing water.
▪ Wear protective clothing.
▪ Use insect repellent on exposed skin or clothing when outdoors especially those that contain DEET, picaridin, IR3535 or oil of lemon eucalyptus.
▪ Reduce or avoid outdoor activities between dusk and dawn when mosquitoes are most active.
Crans urges that vaccinations be provided to horses by only licensed veterinarians to ensure that their protection is effective. Infected horses are often found to have been "improperly vaccinated or (were) vaccinated with vaccine that had lost its protective properties."
The vaccinations when properly given are only effective for one year. Annual booster shots are required. Animals receiving their first vaccination will require a two-shot series to guarantee that their protection is adequate.
Humans that are infected with EEEV may not have any apparent illness or symptoms. Cases that are classified as severe "begin with the sudden onset of headache, high fever, chills, and vomiting. The illness may then progress into disorientation, seizures, or coma." These severe cases involve an inflammatory condition of the brain called encephalitis advises the CDC.
Boston Globe. Massachusetts health officials raise risk level for EEE.
Center for Disease Control.
Crans, Wayne J. Questions regarding eastern equine encephalitis and horses. Rutgers Cooperative Extension Fact Sheet # FS737.
Merck Veterinary Manual.
Pet emergency? Call us right away at 780-872-7387!
Welcome to the Southside Veterinary Clinic! We offer a comfortable and home-like atmosphere to welcome you and your pet. We are a full service, small animal clinic, dedicated to the health of your dogs, cats, and other wonderful pets.
To allow us to serve you better, we ask that you phone us at 780-872-PETS (7387) or click on the "Request Appointment" link above to make an appointment for your pets prior to coming in. This helps us ensure that there is a veterinarian available to help you without delay. If it is an emergency during business hours, if possible please call to let us know that you are on your way into the clinic and the nature of the emergency. We may need to prepare for your arrival or direct you to our partner clinic, Lloydminster Animal Hospital, for further diagnostics, treatment or intensive care. Our goal is to provide your pet with the best possible care!
Should you have an emergency or require veterinary care outside of regular hours, you can reach an on-call veterinarian 24 hours daily by calling Southside Veterinary Clinic.
**All after hours calls will be seen at Lloydminster Animal Hospital.
That hospital is located at 6002 50th Avenue, Lloydminster, AB.