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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.



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Alert ID: 1221
April 08, 2019
Polk County, IA
Confirmed case(s): Official Quarantine
Source: Iowa Department of Agriculture and Land Stewardship

Number Affected: 4;
Notes: Four Quarter Horses have been reported positive for Equine Infectious Anemia in Polk County, IA.

Alert ID: 1220
April 06, 2019
Alameda County, CA
Quarantine Released
Source: California Department of Food and Agriculture

On April 6, 2019, the California Department of Food and Agriculture released the Alameda County Premises from quarantine which was started on 3/23/2019. No additional cases were identified.

Alert ID: 1219
April 05, 2019
Johnson County, WY
Confirmed case(s): Official Quarantine
Source: Wyoming Livestock Board

Number Affected: 1;
Age: 15; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 4/3/2019;
Clinical Signs: Hind-end Weakness; Confirmation Date: 4/4/2019; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;
Notes: On 4/3/19 a Johnson County horse was presented for neurological signs including hind end weakness. The horse was treated by the attending veterinarian and samples were submitted for a neuro panel. On 4/4/19 the horse was confirmed positive for Equine Herpes Virus Type - 1 wild type. The horse has been isolated and 19 herd-mates have been placed under quarantine. It is not known where this horse contracted the disease but it attended college rodeo events on March 15 & 16 at the Camplex in Gillette, Wyoming and on March 21-24 at the Goshen County Fairgrounds in Torrington, WY. Any horses that were at these events should be considered potential exposed and owners should consider taking preventative measure to include close monitoring and twice daily taking of horses' temperatures. Horse(s) with a fever or showing neurological signs should be isolated immediately and a veterinarian contacted for advice and treatment options.;

Alert ID: 1218
April 04, 2019
Bannock County, ID
Confirmed Case(s): Voluntary Quarantine
Source: Idaho State Department of Agriculture

Number Affected: 1;
Age: 13; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 3/26/2019;
Clinical Signs: abortion; Confirmation Date: 4/4/2019; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;
Notes: A mare at a private equine training facility in Bannock County aborted a pregnancy on March 26, 2019. On April 4, 2019 lab results confirmed the abortion was caused by EHV-1 infection, despite the mare being current on her rhino vaccinations. (Mare had received 5m & 7m boosters). The mare had done no significant traveling in the last six months but had been in direct contact with two other horses at her home facility. No respiratory or neurological symptoms have been observed in any of the three horses. There is no evidence to suggest this case is in any way connected to the EHV-positive horse diagnosed March 28 week in Ada County, Idaho. ;

Alert ID: 1217
April 04, 2019
Montmorency County, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

Number Affected: 1;
Age: 2; Gender: Mare; Breed: Standardbred; Onset of Clinical Signs: 3/22/2019;
Clinical Signs: Abscess; Confirmation Date: 4/3/2019; Horse Status: Recovering; Vaccination Status: Unvaccinated;
 

Alert ID: 1216
April 02, 2019
Saginaw and Clare Counties, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

Location: Saginaw County

Number Affected: 1;
Age: 9; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: Not Reported;
Clinical Signs: coughing, difficulty swallowing; Confirmation Date: 2/22/2019; Horse Status: Recovering; Vaccination Status: Not Reported;
Notes: None;

Location: Clare County

Number Affected: 3;
Age: Not Reported; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 3/25/2019;
Clinical Signs: anorexia, Nasal Discharge; Confirmation Date: Not Reported; Horse Status: Recovering; Vaccination Status: Unvaccinated;
Notes: There are approximately 30 horses at this facility. Three horses are confirmed strangles-positive and another nine horses are have clinical signs, but are untested. Horses at this facility were exposed to a confirmed strangles-positive horse about 45 days ago. ;

Alert ID: 1215
April 02, 2019
Clear Hills County, AB
Confirmed case(s): Official Quarantine
Source: Canadian Food Inspection Agency

Number Affected: 2;
Age: Not Reported; Gender: Not Reported; Breed: Not Reported; Onset of Clinical Signs: Not Reported;
Clinical Signs: Not Reported; Confirmation Date: 3/29/2019; Horse Status: Not Reported; Vaccination Status: Not Reported;
Notes: On March 29, 2019, positive EIA results were confirmed by the CFIA’s national reference laboratory for two horses located on a premises in Clear Hills County, AB. The horses had been sampled by an accredited veterinarian to comply with U.S. import conditions. No clinical signs of disease were noted at the time of sampling. A CFIA investigation is underway and as per program policy, a quarantine has been placed on the infected horses and their on-premises contact animals. Initial reports indicate there are several equines on the affected premises. The quarantine will remain until all disease response activities have been completed, including follow-up testing and ordering the destruction of positive cases. Trace-out activities may require the CFIA to undertake actions at additional premises as outlined in the current policy. ;

Alert ID: 1214
April 02, 2019
Humboldt County, NV
Confirmed case(s): Official Quarantine
Source: Nevada State Veterinarian

Number Affected: 1;
Age: 14; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 3/21/2019;
Clinical Signs: Not Reported; Confirmation Date: 3/22/2019; Horse Status: Affected And Alive; Vaccination Status: Not Reported;
Notes: The Nevada State Veterinarian announced on April 2nd that two horses tested last week for EHV-1 in Clark County, NV were negative. Unfortunately, a positive case in Humboldt County, NV was not reported until April 1st. This newest reported case, a 14 year old Quarter Horse mare, first exhibited clinical signs on March 21st and was swabbed on March 22nd resulting in a positive PCR test for EHV-1 (wild type). This horse was not exhibiting neurological signs and was clinically normal on April 1. An epidemiological trace revealed this horse was most likely exposed at a rodeo in Fernley on March 8-10th. The premise this horse is located on has a total of five horses and has been placed under quarantine. The Fallon Jr and Sr High School Rodeo scheduled for April 5-7th has been postponed. One additional test from southern Nevada is pending and results expected April 2nd. More updates will follow as conditions warrant. ;

Alert ID: 1213
April 02, 2019
Marquette, Newaygo, Macomb, and Kent Counties, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

Location: Marquette County

Number Affected: 2;
Age: 17; Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 12/5/2018;
Clinical Signs: Nasal Discharge; Confirmation Date: 2/18/2019; Horse Status: Recovering; Vaccination Status: Not Reported;
Notes: One of the affected horses was brought to the stable in December of 2018. The horse had a runny nose at that time. The horse was examined and confirmed to have strangles in February of 2019.;

Location: Newaygo County

Number Affected: 1;
Age: Weanling; Gender: Colt; Breed: Not Reported; Onset of Clinical Signs: 2/18/2019;
Clinical Signs: coughing, Nasal Discharge, Abscessed Submandibular Lymph Nodes; Confirmation Date: 3/7/2019; Horse Status: Recovering;

Location: Macomb County

Number Affected: 1;
Age: 19; Gender: Gelding; Breed: Pony; Onset of Clinical Signs: 3/4/2019; Confirmation Date: 3/8/2019; Horse Status: Recovering;

Location: Kent County

Number Affected: 1;
Age: 12; Gender: Gelding; Breed: Pony; Onset of Clinical Signs: 3/3/2019;
Clinical Signs: Abscessed Submandibular Lymph Nodes, Fever; Confirmation Date: 3/18/2019; Horse Status: Recovering;
Notes: A pony was brought to the facility in February of 2019. Pony had signs of respiratory disease when arriving at the facility, but was not tested for strangles. Pony recovered.;

Alert ID: 1212
March 31, 2019
Rabies
Gordon County, GA
Confirmed Case(s): No Quarantine
Source: Attending Veterinarian

Number Affected: 1;
Age: 11; Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 3/9/2019;
Clinical Signs: anorexia, Fever, Mild Colic, Pawing; Confirmation Date: 3/15/2019; Horse Status: Euthanized; 
Notes: Unknown number of animals exposed. For more information go to:  https://aaep.org/sites/default/files/Documents/Outside%20Linked%20Documents/DiseaseFactsheet-Rabies.pdf