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Disease Outbreak Alerts

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.


Date Disease Location Status
July 13, 2015 Eastern Equine Encephalitis Newton and Orange Counties, TX Information Only
July 13, 2015-Eastern equine encephalitis has been confirmed in two East Texas horses from separate facilities by the Texas A&M Veterinary Medical Diagnostic Laboratory in College Station, according to agency officials. The horses were in Newton and Orange counties. The Orange County case is approximately 10 miles from an eastern equine encephalitis, which occurred in 2014. As a reportable zoonotic disease, the Texas Department of State Health Services and the Texas Animal Health Commission were made aware of the positive test results. Human infection with eastern equine encephalitis, commonly known as EEE, is relatively infrequent in the U.S.
July 10, 2015 Eastern Equine Encephalitis Madison County, Polk County, FL Information Only
July 10, 2015--Two new cases of EEE were confirmed Madison and Polk Counties within Florida. The one year old Arabian colt in Madison had only receive one vaccine in his life while the 3 year old Quarter Horse mare had never been vaccinated. One horse was euthanized while the other died of natural causes. These are the first occurrences of EEE for each county within the 2015 calendar year.
July 09, 2015 Eastern Equine Encephalitis Cumberland County, NC Information Only
FAYETTEVILLE – Although no cases of Eastern Equine Encephalitis (EEE) in North Carolina have been reported in humans this year, the N.C. Department of Public Health has confirmed the death of a Cumberland County horse identified as having the disease. The case, which was reported to the state on July 7, indicates the disease is present in the county, and state and local public health officials are advising people to take precautions to protect themselves and their horses.
July 08, 2015 Eastern Equine Encephalitis Chesapeake, VA Information Only
The Virginia Department of Agriculture and Consumer Services (VDACS) has confirmed the first case of Eastern Equine Encephalitis (EEE) in a Virginia horse this year. The horse, a 12-year-old miniature mare, was from Chesapeake and had not been vaccinated for EEE.
July 07, 2015 Vesicular Stomatitis Montezuma County, CO Confirmed case(s): Quarantine
July 7, 2015--Three of eleven horses on one premises in Montezuma County, Colorado have been confirmed positive for VSV. A quarantine will remain in effect for a minimum of 14 days after the start of VSV lesions in the last affected equine.
July 06, 2015 Eastern Equine Encephalitis Gadsden County, FL Information Only
July 6, 2015-A new case in Gadsden County has been confirmed with EEE. The horse, a 1 year old Quarter horse filly had not been off the property since birth. The owner vaccinated the filly 6 months prior but did not do an initial booster. Clinical signs began June 21th and progressed until the horse was euthanized on June 27th. The case was confirmed positive by the Florida Department of Agriculture on July 3rd. This is the first confirmed case in Gadsden County and the ninth positive in Florida since the beginning of the year.
July 03, 2015 Vesicular Stomatitis Montrose County, Delta County, CO Confirmed case(s): Quarantine
June 2, 2015-- Horses on two Montrose and one Delta County premises tested positive for the disease and have been placed under quarantine. Colorado has become the fourth state in the country to have confirmed cases of vesicular stomatitis (VS) in 2015. Previous positive cases of vesicular stomatitis this year have been diagnosed in Arizona, New Mexico and Texas. On July 2nd, the National Veterinary Services Laboratory reported positive tests on samples submitted from horses in Montrose and Delta Counties. The initial Colorado disease investigations were accomplished by field veterinarians from the State Veterinarian’s Office at the Colorado Department of Agriculture. “The primary spread of VS is thought to occur through insect vectors; the horses involved in these cases have no history of travel,” said State Veterinarian, Dr. Keith Roehr. “Vesicular stomatitis can be painful for animals and costly to their owners. The virus typically causes oral blisters and sores that can be painful causing difficulty in eating and drinking.” A 2014 outbreak of VS created 556 livestock investigations in Colorado resulting in 370 quarantines with the final quarantines released in January 2015. Livestock owners who suspect an animal may have VS or any other vesicular disease should immediately contact their local veterinarian. Livestock with clinical signs of VS are isolated until they are determined to be of no further threat for disease spread. There are no USDA approved vaccines for VS. While rare, human cases of VS can occur, usually among those who handle infected animals. VS in humans can cause flu-like symptoms and only rarely includes lesions or blisters.
July 02, 2015 Equine Influenza Kingman, AZ Information Only
July 1, 2015-Dr. Wright from Kingman has notified the SVO that she has confirmed Equine Influenza Virus (EIV) in a local horse. The client was recently at a barrel race in Boulder City, NV. Approximately 4 days after returning home, a horse became ill with upper respiratory signs and fever. Samples were PCR positive for EIV. Currently 6 of 10 horses have clinical signs. It was also reported there had been no vaccination unless greater than a year earlier. Hopefully practitioners can use this information to help persuade folks of the value of vaccines used strategically.
July 01, 2015 Strangles Polk County, FL Confirmed case(s): Quarantine
June 30, 2015-A new premise in Polk County that was reported for possible strangles. Currently two horses out of the approximately 80 horses on the premises are clinical. The symptoms started on June 15th but the premise was not reported until June 30th. Currently the facility is under quarantine. This is the second confirmed case in Polk County and the 18 incident for the state since the beginning of the year.
July 01, 2015 Eastern Equine Encephalitis Alachua County, FL Outbreak Contained
June 30, 2015A new case in Alachua County has been confirmed with EEE. The horse, a one year old Thoroughbred filly had not been off the property since birth and the owner last vaccinated the filly in August of 2014. Clinical signs began June 16th and progressed rapidly resulting in euthanasia due to poor prognosis. The case was confirmed positive by the Florida department of Agriculture on June 30th. This is the first confirmed case in Alachua County and the 8th positive in Florida since the beginning of the year.