Disease 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.



Halicephalobus
Estrie, QC
Outbreak Identifier: 6151
Alert ID: 3602
February 24, 2024
Suspected Case - Voluntary Quarantine

MAPAQ

Number Suspected: 1
Number Exposed: Unknown
Facility Type: Stable

Horse 1: 
Gender: Gelding; Breed: Pony; Clinical Signs: Neurologic; Confirmation Date: 2/5/2024; Horse Status: Deceased

Comments: Imported from Iceland this summer; histopathology suspect for Halicephalobus gingivalis. For additional reference information on Halicephalobiasis, go to: 

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5952678/#:~:text=Halicephalobiasis%20is%20a%20helminthic%20infection,fatal%20meningoencephalomyelitis%20mainly%20in%20equines

https://aaep.org/sites/default/files/issues/439-440.pdf

 

MRC Marguerite-D'Youville, Montérégie, QC
Outbreak Identifier: 6150
Alert ID: 3601
February 24, 2024
Confirmed Case(s) - Voluntary Quarantine

MAPAQ

Number Confirmed: 1
Number Exposed: Unknown
Facility Type: Stable

Horse 1: 
Age: 6; Gender: Gelding; Onset of Clinical Signs: 2/11/2024; Clinical Signs: Diarrhea, fever, colic; Confirmation Date: 2/22/2024; Horse Status: Recovering

Comments: Salmonella Thompson strain.

Lorain County, OH
Outbreak Identifier: 6149
Alert ID: 3600
February 23, 2024
Confirmed Case(s) - Official Quarantine

Attending Veteriinarian and State Veterinarian

Number Confirmed: 1; 
Number Exposed: 1; 
Number Euthanized: 1; 
Facility Type: Private Facility; 

Horse 1: 
Age: 28; Gender: Mare; Breed: Thoroughbred (TB); Usage: Jumping; Onset of Clinical Signs: 2/16/2024; Clinical Signs: Acute ataxia, incontinence.; Confirmation Date: 2/22/2024; Horse Status: Euthanized; Vaccination Status: Vaccinated;

Livingston County, MI
Outbreak Identifier: 6147
Alert ID: 3599
February 23, 2024
Confirmed Case(s) - Voluntary Quarantine

Michigan Department of Agriculture and Rural Development

Number Confirmed: 1; 
Number Exposed: 1; 

Horse 1: 
Age: 13; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 12/9/2023; Clinical Signs: Fever, nasal discharge; Confirmation Date: 2/19/2024; Horse Status: Recovering; Vaccination Status: Status Unknown;

LaGrange County, IN
Outbreak Identifier: 6146
Alert ID: 3598
February 22, 2024
Confirmed Case(s) - Official Quarantine

Indiana State Board of Animal Health

Number Confirmed: 1
Number Exposed: 20
Facility Type: Private Facility;

Horse 1: 
Gender: Mare; Breed: Pony; Onset of Clinical Signs: 2/19/2024; Clinical Signs: lethargy ataxia; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Comments: On 2/19/2024 a pony mare presented with lethargy and ataxia. On 9/21/2024 test results confirmed she was positive for EHV-1 by PCR on both blood and nasal swab. She and the other 20 horses on the premises are quarantined and are being monitored for fever or other clinical signs. State animal health officials continue to monitor the situation and urge the equine community to employ good biosecurity practices when attending and returning home from equine events and sales.

Montgomery County, MD
Outbreak Identifier: 6145
Alert ID: 3597
February 22, 2024
Confirmed Case(s) - Voluntary Quarantine

Attending Veterinarian

Number Confirmed: 2; 
Number Exposed: 45;

Racine County, WI
Outbreak Identifier: 6144
Alert ID: 3596
February 22, 2024
Confirmed Case(s) - Voluntary Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

Number Confirmed: 1; 
Number Suspected: 2; 
Number Exposed: 20; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 7; Gender: Gelding; Breed: Quarter Horse (QH); Clinical Signs: Submandibular lymphdenopathy, draining abscess.; Confirmation Date: 2/20/2024; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Grey County, ON
Outbreak Identifier: 6143
Alert ID: 3595
February 21, 2024
Confirmed Case(s) - Voluntary Quarantine

OMAFRA

Number Confirmed: 1; 
Number Suspected: 4; 
Number Exposed: Unknown; 
Number Euthanized: 3; 
Facility Type: Farm; 

Horse 1: 
Age: 4; Gender: Mare; Breed: Warmblood (WB); Usage: Breeding; Onset of Clinical Signs: 2/17/2024; Clinical Signs: This pregnant mare was admitted to a referral hospital for treatment of acute neurologic signs (4/5 ataxia, head tilt and cranial nerve deficits). Nasal swab and blood samples were positive fore EHV-1 by PCR.; Confirmation Date: 2/21/2024; Horse Status: Recovering; 

Comments: The farm owner is working with their veterinarian to implement voluntary animal movement restrictions and infection control measures. This mare was one of 23 horses bought at a sale in Illinois at the beginning of February. The horses were transported to a holding facility in Indiana prior to shipping to Ontario and delivered to farms in Grey County and surrounding areas. So far, the 5 confirmed/suspect horses were horses that arrived on these trailers. Veterinarians in the area are working with owners to manage the outbreak.;

Spokane County, WA
Outbreak Identifier: 6123
Alert ID: 3594
February 21, 2024
Outbreak Update

WSDA

Number Confirmed: 1; 
Number Suspected: 9; 
Number Exposed: 27; 
Number Euthanized: 5; 
Facility Type: Private Facility; 
Comments: Update2/21/2024: • In the outbreak in Spokane county, horses have experienced the abortion and neurologic forms of the disease. • The last EHM case reported on the quarantined premises was on 2/15/24. • There is NO evidence of lateral spread of the disease to other facilities. • There is NO history of these horses recently attending a show or event. • The owner has been extremely cooperative and has employed strict biosecurity that is being overseen by WSDA field veterinarians. • The quarantine will be lifted 21 days after the last clinical signs of EHV.; 
Previous Alerts: 3574

Geuga County, OH
Outbreak Identifier: 6142
Alert ID: 3593
February 19, 2024
Confirmed Case(s) - Official Quarantine

Number Confirmed: 1; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 24; Gender: Gelding; Onset of Clinical Signs: 2/14/2024; Clinical Signs: Showed hind-end weakness and stumbling, however no fever was present and the horse is mentally alert and eating and drinking well; Confirmation Date: 2/16/2024; Horse Status: Affected And Alive;