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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.


February 28, 2018
Equine Herpes Viruses
Fredericksburg and Powhatan County, VA
Confirmed case(s): Official Quarantine
Source: Virginia Department of Agriculture and Consumer Services

The Virginia Department of Agriculture and Consumer Services (VDACS) has confirmed a diagnosis of Equine Herpesvirus Myeloencephalopathy (EHM) in two horses in Virginia. On Tuesday, February 27, the State Veterinarian’s Office at VDACS confirmed that two horses exhibiting neurological signs tested positive for Equine Herpesvirus-1 (EHV-1), the virus that causes EHM. Both horses were euthanized. There is no link between the two horses and the timing of the EHM finding is coincidental. One horse was housed at the Hazelwild Equestrian Center in Fredericksburg and the second was located on a private farm in Powhatan County. Both facilities have been placed under quarantine. All exposed horses are being monitored twice daily for fever (temperature over 101.50 F) and other clinical signs. VDACS is working with the facility owners to determine if any exposed horses have left the premises. Owners of exposed horses will be notified and are advised to isolate and observe their horses closely for signs of the disease.

February 28, 2018
Equine Herpes Viruses
Kentucky, United States
Confirmed case(s): Official Quarantine
Source: Kentucky Office of the State Veterinarian

On Monday February 26, 2018, the Kentucky Office of the State Veterinarian received notification confirming the diagnosis of Equine Herpes Myeloencephalopathy (EHM) in a Warmblood mare that had imported through the USDA’s New York Animal Import Center and consigned to a private quarantine facility in KY to complete CEM quarantine.  The mare arrived at the KY facility on February 18. 2018 and first developed acute neurologic signs during the evening on Sunday, February 25. The mare was referred and transported to a local equine hospital the following morning where she was diagnosed positive for EHV-1 neuropathogenic strain.  This mare had no direct exposure to resident horses while in quarantine and no other horses in the facility are exhibiting clinical signs of EHM. The population of horses will continue to be monitored and horses identified or considered to have had indirect exposure will test NEG prior to being released from quarantine. Transport cohorts have been identified and notices given to appropriate personnel. USDA officials and transport staff have been notified of the diagnosis.

February 27, 2018
Equine Herpes Viruses
Belmont Park, NY
Outbreak Update
Source: New York State Department of Agriculture and Markets

 

Exposed horses in Barn 10 at Belmont Park continue to be quarantined and closely monitored by trainers, veterinarians and track officials. Those horses continue to be afebrile and asymptomatic.  New York Racing Association and state animal health officials traced all horses potentially exposed in Barn 10, going back to February 1st.  All potentially exposed horses were located and animal health officials in the receiving states were notified.  To date, none of the horses traced from Barn 10 are known to have exhibited signs of EHV1.

February 26, 2018
Equine Herpes Viruses
Maricopa County, AZ
Confirmed case(s): Official Quarantine
Source: Arizona Department of Agriculture

The Arizona Department of Agriculture has confirmed a case of equine herpesvirus myeloencephalopathy in a Quarter Horse in Maricopa County. Clinical signs included fever, ataxia, and  neurological symptoms. The affected horse was confirmed positive for EHV-1.  The premise is under quarantine and strict biosecurity is being followed. The epidemiological investigation is ongoing.

February 26, 2018
Equine Herpes Viruses
Gooding and Jerome Counties, ID
Quarantine Released
Source: Idaho State Department of Agriculture

The Idaho State Department of Agriculture has released the quarantine of premises in both Jerome & Gooding counties due to EHM. Three other premises in Gem, Bannock and Cassia county remain under quarantine due to EHV-1.

February 26, 2018
Strangles
Escambia and Alachua Counties, FL
Confirmed case(s): Official Quarantine
Source: Florida Department of Agriculture and Consumer Affairs

On February 6th, 2018, one premise in Escambia County, Florida was placed under quarantine for clinical signs of Strangles. One of the six equines on the premise are showing clinical signs at this time. This is the first cases of Strangles reported in Escambia County in 2018. On February 20th, 2018, one premise in Alachua County, Florida was placed under quarantine for clinical signs of Strangles. Seven of the eight horses on the premise are showing clinical signs at this time. On February 26th, 2018, one premise in Alachua County, Florida was placed under quarantine for clinical signs of Strangles. The horse became clinical after returning home from training. There are no sick horses at the training facility at this time. These are the first and second cases of Strangles reported in Alachua County in 2018 and these three cases bring the number of Strangles cases reported in Florida to seven overall in 2018.

February 26, 2018
Eastern Equine Encephalitis
Nassau County, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of Agriculture and Consumer Affairs

On February 12th, 2018, one horse in Nassau County Florida was confirmed positive for Eastern Equine Encephalitis (EEE). The 7 year old Quarter Horse mare became clinical on January 31st and was euthanized due to a poor prognosis. The vaccination history is unknown.

February 26, 2018
Equine Herpes Viruses
The Meadows Racetrack, PA
Outbreak Update
Source: Pennsylvania Department of Agriculture

The Pennsylvania Department of Agriculture has reported that three barns at The Meadows Racetrack remain under quarantine for having or previously having EHM horses. A total of 4 EHM horses have been identified with an additional 8 horses that have tested positive for EHV-1 without neurologic signs in this incident. The last EHM case was identified on February 23, 2018.  A daily monitoring period for clinical signs in the remaining exposed, asymptomatic horses is ongoing in the quarantined barns. Updates will be posted as they become available.

February 22, 2018
Equine Herpes Viruses
Los Alamitos Race Course, CA
Outbreak Update
Source: California Department of Food and Agriculture

 The California Department of Food and Agriculture and California Horse Racing Board (CHRB) staff onsite  at the Los Alamitos Race Course continue to monitor the quarantine. Only one barn of eleven exposed horses is currently under quarantine. Enhanced biosecurity measures have been implemented with twice daily temperature monitoring of exposed horses. The temperatures of the eleven exposed horses remain normal. No additional cases have been identified.

February 22, 2018
Equine Herpes Viruses
King County, WA
Quarantine Released
Source: Washington State Department of Agriculture

The Washington Department of Agriculture has released the quarantine for the King County horse which tested positive for non-neurotropic EHV 1. The affected horse has never shown any outward clinical signs for EHV 1 and the recovery seems uneventful. The quarantine was originally issued on February 5, 2018.