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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.


May 24, 2016
Equine Herpes Viruses
Bucks County, PA
Quarantine(ended)
The quarantine put in place in Bucks County, Pennsylvania, which arose from an initial EHV-1 quarantine on December 21st, 2015, has been revoked by the Pennsylvania Department of Agriculture. One EMH case had an extended shedding time but did test negative for EHV-1 twice a week apart.
May 24, 2016
Eastern Equine Encephalitis
Horry County, SC
Confirmed case(s): Official Quarantine
The State Veterinarian’s office received laboratory confirmation of the first 2016 case of EEE in Horry county, South Carolina. For more information visit: http://newsstand.clemson.edu/mediarelations/officials-urge-vaccination-of-horses-after-discovery-of-early-case-of-deadly-encephalitis/
May 23, 2016
Eastern Equine Encephalitis
Polk County, FL
Confirmed case(s): Official Quarantine
On May 23, a new case of EEE was confirmed in Polk County, Florida. The horse was a 4 year old, unvaccinated Paint gelding with no travel history in the past 6 months. Clinical signs began May 10th. The horse was euthanized for humane reasons the following day. This is the second confirmed case in Polk County and the third confirmed positive in Florida since the beginning of the year.
May 21, 2016
Equine Infectious Anemia
Elon Valley, Lawrence County, PA
Confirmed case(s): Official Quarantine
The Pennsylvania Department of Agriculture today announced that an Order of Special Quarantine has been posted at an equine facility in Enon Valley, Lawrence County, after a horse on the premises tested positive for Equine Infectious Anemia (EIA) at the Pennsylvania Veterinary Laboratory on Wednesday, May 11, 2016 with confirmation from the National Veterinary Services Laboratory today. There are 34 other equine animals (horses, miniature horses, and miniature donkeys) on this premises that are under quarantine. The horse has been stabled at the farm for the past three years.  The Department is investigating the positive horse’s movement history and any other potentially exposed horses. These animals will remain under quarantined for at least 60 days. The quarantine can be lifted after the remaining animals are determined not to be infected. Horse owners with concerns may contact the Department of Agriculture’s Bureau of Animal Health and Diagnostic Services at 717-772-2852.
May 20, 2016
Equine Herpes Viruses
Howard County, MD
Quarantine(ended)
The quarantine put in place last month for an EHV-1 outbreak in Howard County, Maryland was lifted yesterday, May 19th , according to Maryland’s State Veterinarian. No new cases of EHV-1 have been reported since two horses tested positive for the non-neuropathogenic strain of EHV-1 on April 19th.
May 18, 2016
Equine Herpes Viruses
Parx Racetrack, Bensalem, PA
Quarantine(ended)
The quarantine put in place after the EHV-1 outbreak last month at Parx Racetrack in Bensalem, PA has now been lifted after the remaining quarantined horses were sampled on Monday, May 16th. All results at the Pennsylvania veterinary lab were negative for EHV-1.
May 16, 2016
Equine Herpes Viruses
Howard County, MD
Confirmed case(s): Official Quarantine
There have been no new cases of Equine Herpes Virus-1 (EHV-1) reported since April 19th when two horses stabled at the same farm in Howard County tested positive for the non-neuropathogenic strain of the virus. The farm was placed on 30-day quarantine when the first case was confirmed on April 18. There has been no movement of horses on or off the farm since that date. No other EHV-1 cases have been reported in Maryland.
May 13, 2016
Eastern Equine Encephalitis
Osceola County, FL
Confirmed case(s): Official Quarantine
On May 13, a new EEE case was confirmed in Osceola County, Florida. The two year old, unvaccinated Mustang had not been off the premises in over a year. Clinical signs began on May 6 and the horse was euthanized for humane reasons on May 7. This is the first confirmed EEE case in Osceola County and the second confirmed case in Florida for 2016.
May 13, 2016
Equine Herpes Viruses
Palm Beach County, FL
Confirmed case(s): Official Quarantine
On May 12, one premises in Palm Beach County was placed under quarantine after a horse displayed neurologic signs and was confirmed positive for EHV-1 via PCR. The 18 other horses on the premises currently are clinically normal. The index case has been euthanized for humane reasons. Biosecurity measures and twice daily temperature monitoring are in place. All states with traces have been notified. The Florida Department of Agriculture and Consumer Services will continue to monitor the situation.
May 13, 2016
Equine Herpes Viruses
Washington County, WI
Confirmed case(s): Official Quarantine
A horse in Washington county Wisconsin has tested positive for equine herpesvirus-1 (EHV-1) according to Wisconsin’s state veterinarian. The horse began showing neurologic signs earlier this week and was humanely euthanized. Three other horses currently have a fever and are being monitored while being held in isolation from the other horses in the barn. The premises has been quarantined. The Wisconsin Department of Agriculture, Trade and Consumer Protection will work with the stable owner and the veterinarian to determine when the quarantine will be released. For more information go to: http://datcp.wi.gov/news/?ID=1470