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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 12, 2018
Equine Herpes Viruses
King County, WA
Quarantine Released
Source: Washington State Department of Agriculture

On February 12th, 2018 the Washington State Department of Agriculture released the quarantine that was issued to an equine facility in Woodinville, King County, Washington. The facility has been under quarantine since December 13, 2017 due to an EHM outbreak; the original alert was posted to the EDCC on December 15th, 2017. Seven horses had to be euthanized.

February 10, 2018
Equine Herpes Viruses
Portland Meadows Racetrack, OR
Quarantine Released
Source: Oregon Department of Agriculture

 The Oregon Department of Agriculture has released the quarantine for the wild type EHV-1 positive horse at the Portland Meadows racetrack.  The affected horse has made an impressive recovery and now tests negative for EHV-1.  

February 09, 2018
Equine Herpes Viruses
Campbell County, WY
Outbreak Update
Source: Office of the Wyoming State Veterinarian

The Wyoming Livestock Board has confirmed on Thursday February 8th, the fourth horse was confirmed positive for EHV-1 wild type.  This horse originated from the same premises as the first horse so no further quarantines were necessary.  The horse is stable and being treated at the veterinary facility where it was evaluated.

February 08, 2018
Equine Herpes Viruses
The Meadows Racetrack, PA
Outbreak Update
Source: Pennsylvania Department of Agriculture

Pennsylvania Department of Agriculture veterinarians have now posted official quarantines for seven barns at The Meadows Racetrack and Casino in Washington County (harness racing track). To date, two EHM cases and four additional confirmed EHV-1 positive, non EHM cases have been identified at The Meadows related to this incident.  The initial quarantine was posted on January 22 for a suspected case of EHM that was taken from The Meadows to the Ohio State University for treatment.  That case was confirmed EHV-1 positive on January 22.  The most recent quarantine at The Meadows was posted on February 3. Biosecurity has been implemented in ALL barns and anywhere that people comingle.  The track has suspended racing, but continues to evaluate the status of new cases and racing options.  The stable gates have been closed since the first official quarantines were posted.

February 08, 2018
Equine Herpes Viruses
Kennett Square, PA
Outbreak Update
Source: Pennsylvania Department of Agriculture

The official quarantines imposed by the Pennsylvania Department of Agriculture on two barns at the University of Pennsylvania’s New Bolton Center in Kennett Square, Pennsylvania, have been lifted effective Saturday, February 3, 2018. A self-imposed quarantine, approved by the Pennsylvania Department of Agriculture, remains in effect on three horses that previously tested positive for EHV-1. These horses have remained stalled in an on-site isolation facility with dedicated staff that is entirely separate from personnel handling other horses.  Quarantine revocation testing for these three animals will begin Wednesday, February 7, 2018. New Bolton Center has resumed normal operations and is currently admitting all equine elective and emergency patients with minimal restrictions. Additionally, all elective and emergency camelid cases are being admitted. All cows, goats, sheep, or pig patients continue to be admitted to the hospital. Field Service operations remain unaffected and the Center will continue to receive appointments for non-equine animals. Reproductive services at the Hofmann Center are fully operational.

 

New Bolton Center Trace Update:

Over the past two weeks, PDA has been able to revoke quarantines on all but two of the trace premises in PA related to this incident. Testing for quarantine revoke at those two premises will begin on or after February 12.  No EHM cases have been identified at any of the trace premises. 

February 08, 2018
Equine Herpes Viruses
Campbell County, WY
Outbreak Update
Source: Office of the Wyoming State Veterinarian

On 2/6/18 a third horse in the Wright area of Campbell County was admitted to a veterinary clinic with signs of hind limb ataxia and weakness and no fever. Samples were collected and treatment imitated at the facility. On 2/7/18, results for that horse were reported as positive for EHV-1 wild type on both nasal swab and blood. The premise of origin for this positive horse is a boarding facility which has been placed under quarantine with 17 horses present and considered exposed. Additionally, based on necropsy results and ante-mortem testing, the index case in Campbell County was classified as EHM positive and the premises of origin was quarantined to include 10 horses considered exposed. Results for the second positive horse were also positive for EHV-1 wild type on both nasal swab and blood and that premises of origin was also quarantined to include 9 horses considered exposed and another showing mild neurologic signs with no fever. This most recent positive (second on this premises) is being treated at the same veterinary facility and samples have been submitted. This brings the current count of suspected or confirmed EHV-1 cases to four. All 3 quarantined premises which contain 26 quarantined horses total, are instituting biosecurity practices, checking temperatures at least twice daily, and cooperating fully with state animal health officials. An epidemiological investigation continues to try to determine a common source of infection for all three horse so as to alert the public and mitigate further spread.  All four of the horses showing signs have a history of competing at barrel racing events. On Friday, February 9th 2018 the Wyoming Livestock Board Veterinary Staff in conjunction with Cam-Plex management will be hosting a public informative meeting regarding Equine Herpes Virus Meyeloencephalopathy and recent cases in Campbell County. There will be a brief overview of the disease and a question and answer period. The meeting is open to all that want to attend. The meeting will be held in the Energy Building at the Cam-Plex and start at 6:30 PM. For more information go to https://wlsb.state.wy.us/public 

 

February 08, 2018
Equine Herpes Viruses
Turfway Park, KY
Outbreak Update
Source: Kentucky Department of Agriculture

Both horses that tested positive for EHV-1 on 2/6/2018 at Turfway Park racetrack have been removed from the grounds and are in isolation at a private facility. The horses that had moved from the quarantine barn prior to restrictions being implemented have all been sampled and testing completed. Each horse has been reported negative by PCR on both nasal swabs and whole blood and remain in isolation. There have been no fevers or other evidence of illness reported in the quarantine barn.

February 07, 2018
Equine Herpes Viruses
Gooding and Gem Counties, ID
Confirmed case(s): Official Quarantine
Source: Idaho state department of agriculture

The Idaho State Department of Agriculture confirmed Equine Herpesvirus Myeloencephalitis (EHM) in a Quarter Horse mare that exhibited fever, diarrhea and ataxia at a private facility in Gooding County. The mare, of unknown vaccination status, was euthanized. A second QH mare of unknown age in Gem County experienced an abortion. Real time PCR of fetal tissue samples confirmed EHV-1 wild strain infection. This mare was current on vaccinations including EHV-1. Both premises are under quarantine and all horses are being actively monitored for elevated temperatures and clinical signs. Strict biosecurity measures have been implemented at all facilities. The ongoing investigation has yet to determine an epidemiological link between any of the current Idaho cases.

February 07, 2018
Equine Herpes Viruses
King County, WA
Confirmed case(s): Official Quarantine
Source: Washington State Department of Agriculture

The Washington State Department of Agriculture (WSDA) reports a confirmed case of non-neuropathogenic Equine Herpesvirus-1 (EVH-1) by a nasal swab (PCR) from a horse in King County that was recently transported from Portland Meadows Racetrack, Oregon.  The horse is not demonstrating clinical signs of illness at this time.  WSDA has placed the facility under quarantine and is actively monitoring other horses at the facility that have been exposed to the infected index horse.

February 07, 2018
Strangles
Bedford County, VA
Quarantine Released
Source: Attending Veterinarian

An attending veterinarian has confirmed an outbreak of Strangles in Bedford County, Virigina. 8 horses have been reported as affected with 12 horse in total under quarantine. The index horse showed an onset of symptoms on December 21st, 2017 including cough, nasal discharge, swollen lymph nodes, and fever. There have been no further horses with clinical signs other than the original 8 that showed signs within the first 7 days. All the affected horses have since recovered and have been free of any clinical signs for the last 3 weeks. The quarantine has been released.