State sees first EEE cases of the year in horses
Equine owners encouraged to vaccinate animals
RALEIGH - Two horses
have been confirmed this week as having died after contracting Eastern
Equine Encephalomyelitis within the past two weeks. EEE is a
mosquito-borne disease that is preventable in equine by vaccination.
The unvaccinated horses
- an 18-month-old Paint from Carteret County and a 3-year-old Quarter
horse from Bladen County - exhibited signs of generalized weakness,
stumbling, depression and inability to stand or eat. The Carteret County
horse was euthanized July 21, and the Bladen County horse died Aug. 2.
They are the first reported cases of EEE in horses in
North Carolina this year. Earlier this summer, New Hanover County
officials reported that the disease was found in a sentinel chicken
flock. The state recorded 15 EEE cases in horses in 2013.
"If your horses exhibit
any symptoms of EEE, contact your veterinarian immediately," said State
Veterinarian David Marshall. "Several serious contagious diseases, such
as West Nile virus, equine herpes virus and rabies, have similar
symptoms and should be ruled out."
EEE causes inflammation or swelling of the brain and
spinal cord and is usually fatal. Symptoms include impaired vision,
aimless wandering, head pressing, circling, inability to swallow,
irregular staggering gait, paralysis, convulsions and death. Once a
horse has been bitten by an infected mosquito, it may take three to 10
days for signs of the disease to appear.
Marshall recommends that equine owners talk to their
veterinarians about an effective vaccination protocol to protect horses
from EEE and another mosquito-borne disease, West Nile virus. The
vaccinations initially require two shots, 30 days apart, for horses,
mules and donkeys that have no prior vaccination history. Marshall
recommends a booster shot every six months.
Mosquitoes can breed in
any puddle that lasts for more than four days, so removing any source
of standing water can reduce the chance of exposing animals to WNV or
EEE. Keeping horses in stalls at night, using insect screens and fans
and turning off lights after dusk can also help reduce exposure to
mosquitoes. Insect repellants can be effective if used according to
manufacturers' instructions.
People, horses and birds can become infected from a bite
by a mosquito carrying the diseases, but there is no evidence that
horses can transmit the viruses to other horses, birds or people
through direct contact.
|