Horses Test Positive for Eastern Equine Encephalitis and West Nile Virus 

Baton Rouge, LA (August 19, 2019) – Sixteen horses have tested positive for Eastern Equine Encephalitis (EEE) and one has tested positive for West Nile Virus (WNV) since June 5, 2019.  Department of Agriculture and Forestry Commissioner Mike Strain, D.V.M., is reminding horse owners to vaccinate their animals for both EEE and WNV.

“It’s been a wet season and we are seeing an unusually high number of cases at this time,” said Strain. Horses are infected the same way humans are infected – by being bitten by infected mosquitoes – so everyone needs to take extra precautionary measures at this time.”

If a mosquito bites an infected bird, EEE or WNV can be spread to horses, dogs, cats and humans. These mosquito-transmitted diseases can cause inflammation or swelling of the brain and spinal cord.

Clinical signs can include: fever, loss of appetite, weakness and loss of coordination.

The disease can often result in death.

EEE primarily causes disease in the equine species such as horses, mules, donkeys and zebras. However, a number of other animals such as pigs, llamas, bats, reptiles, amphibians, and rodents can also be infected.

WNV primarily affects birds, but can also infect bats, horses, cats, dogs, chipmunks, skunks, squirrels, domestic rabbits, alligators, and humans.

Prevention includes removing standing water where mosquitos breed and using mosquito repellants that are safe for animals and humans. Horses can also be vaccinated. So far, there is no vaccination approved for people. Horse owners should contact their local veterinarian regarding proper vaccination protocols during this time of increased risk.

Veterinarians are required to call the Louisiana Department of Agriculture and Forestry if they suspect EEE or WNV in a horse as they are reportable diseases.


It’s Monday and the West Baton Rouge Mosquito Control is the bearer of bad news for those that live in West Baton Rouge Parish.

WBRMC “submitted 45 mosquito samples to the LSU Diagnostic lab last week for testing and 1 sample has tested positive for West Nile Virus.”

The positive sample was located in the southern end of the parish.

West Baton Rouge Mosquito Control said, “nighttime spray truck operations will be targeted towards the affected area this week, beginning tonight.”

The map below provides information on where the positive sample originated from and where spraying is going to take place.

West Baton Rouge Mosquito Abatement

The West Baton Rouge Mosquito Control provided this information below on how to keep the West Nile Virus at bay.

Please remember to take proper precautions to protect yourself and your family from being bitten by mosquitoes. Wear mosquito repellent if you are going to be outdoors, wear long clothes if possible, empty or flush all containers around your house weekly, remove or treat any standing water on your property, avoid activities during dusk and dawn when mosquitoes are most active, make sure window and door screens are free of holes, and seal any cracks around window AC units. Check back for updates and remember to be a Skeeter Beater!