Donate to the EDCC
Sign up for Email Alerts

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.


April 04, 2017
Strangles
Washington County, RI
Confirmed case(s): Official Quarantine

Strangles has been diagnosed by an attending veterinarian of a boarding and training facility in Washington County, Rhode Island. The horses affected vary in age and gender and have displayed clinical signs including fever, cough, nasal discharge, and enlarged lymph nodes. Culture of a lymph node aspirate confirmed infection with Strep equi. The RI State Veterinarian issued an order of quarantine on April 4th for all equines housed at the facility. This facility houses horses owned by multiple owners and are cared for by multiple veterinarians. All attending veterinarians have been notified. At this point fewer than 10% of the horses have shown clinical signs.

April 04, 2017
Equine Herpes Viruses
Anne Arundel County, MD
Investigation Initiated

A horse stabled in Anne Arundel County in Maryland was transported to Marion duPont Scott Equine Medical Center in Leesburg, Virginia on the evening of April 2, where it exhibited severe neurological signs, was placed in isolation, and was euthanized shortly after arrival. A diagnosis of Equine Herpesvirus Myeloencephalopathy cause by the non-neuropathic strain of EHV-1 was confirmed on April 4 by the Virginia Department of Agriculture and Consumer Services’ Animal Health Lab in Warrenton, Virginia. The farm is presently under a 21-day investigational hold and strict biosecurity measures are in place while Maryland Department of Agriculture inspectors perform additional epidemiological and infectious disease testing. The stable owner is contacting boarders and students. Potential epidemiologic links to the sick horse are being notified of the situation and owners are cautioned to carefully monitor horses at their premises. For more information go to: http://news.maryland.gov/mda/category/mda-newsroom/. Additional information on Equine Herpesvirus Myeloencephalopathy go to: https://aaep.org/sites/default/files/Documents/DiseaseFactsheetEHM.pdf

March 30, 2017
Strangles
Marion County, FL
Confirmed case(s): Official Quarantine
On March 28 and 29, two premises, both in Marion County, Florida were placed under quarantine for strangles. The cases are unrelated. No horses have left either quarantined areas since clinical signs began. These are the third and fourth cases in Marion County and cases 13 and 14 for Florida in 2017
March 24, 2017
Equine Herpes Viruses
Marion County, OR
Confirmed case(s): Official Quarantine
A horse with neurologic signs was diagnosed with equine herpesvirus myeloencephalopathy (EHM) in Marion County Oregon. The horse began showing acute neurologic signs on Saturday March 18 and was immediately referred to Oregon State University-College of Veterinary Medicine (OSU-CVM). The diagnosis was made on March 20 by a positive test for both the EVH-1 wild type and neurotropic genetic markers. When horse’s condition deteriorated, it was euthanized. All horses at the Marion County property have been quarantined and strict biosecurity measures initiated. A second location in Marion County with a high-risk contact horse has also been quarantined. Quarantined horses are being closely monitored and there is no indication at this time that the virus has spread to other horses beyond those being quarantined, and there are no traces to other states. The Oregon Department of Agriculture will continue to work closely with all involved parties and is monitoring the situation very closely. Owners with questions about the neurologic form of EHV-1 should contact their veterinarian.
March 17, 2017
Strangles
Nevada, United States
Information Only
Source: The Nevada Department of Agriculture

The Nevada Department of Agriculture has reported that the spread of equine strangles has slowed significantly over the last two weeks; however there are reports of new cases, predominantly in western Nevada, as recently as March 12. For more information go to http://agri.nv.gov/News/2017/Spread_of_equine_strangles_has_slowed_in_Nevada/

March 17, 2017
Equine Herpes Viruses
San Diego County, CA
Quarantine Released
Source: California Department of Food and Agriculture

March 16, 2017: The quarantine at the San Diego County premises has been released as the Equine Herpesvirus Myeloencephalopathy case has met the negative test requirement for quarantine release. There are no EHM cases under quarantine in California at this time. For more information go to https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html

March 17, 2017
Equine Infectious Anemia
Choctaw County, OK
Confirmed Case(s): No Quarantine
The Oklahoma Department of Agriculture (ODAFF) has confirmed the first EIA positive horse for 2017 in Oklahoma. The 8 year old registered QH gelding located in Choctaw County was euthanized. Past EIA test history for this horse is unknown, but this horse was actively involved in rodeo and roping events. ODAFF recommends regular EIA testing for all horses, including those that do not leave the property, at least every 3 years.
March 16, 2017
Equine Herpes Viruses
Denton County, TX
Quarantine Released
Texas Animal Health Commission (TAHC) officials released the premises quarantined for Equine Herpes Myeloencephalopathy (EHM), the neurologic disease linked to Equine Herpes Virus (EHV-1), in a Denton County barrel racing horse on March 15, 2017. There are no other reported EHM cases in Texas.
March 16, 2017
Equine Herpes Viruses
Manitoba, Canada
Confirmed case(s): Official Quarantine
The Manitoba Horse Council has confirmed cases of Equine herpesvirus (EHV-1) which has caused abortions and neurologic disease starting 3 weeks ago in southwest Manitoba. Veterinarians initiated a strict quarantine of 105 horses on the property. Eight fatalities have resulted from neurologic disease with an additional 2 horses currently showing with neurologic signs. The premises is isolated with no movement of horses on or off the property since outbreak started. Strict biosecurity measures are in place.
March 13, 2017
Equine Herpes Viruses
Kentucky, United States
Information Only
The KY Department of Agriculture has amended the procedures to be followed for horses originating from (or having been recently stabled) Fair Grounds Race Track in New Orleans destined to KY race tracks or their associated training facilities. Following the link below will open (Adobe Reader required) a document that describes the current requirements. www.kyagr.com/statevet/equine-infectious-diseases.html