Disease Alerts

Source: California Department of Food and Agriculture

Number Confirmed: 24;
Number Exposed: 12;
Notes: Additional information can be found here: 

Source: Attending Veterinarian

Number Confirmed: 1;
Number Exposed: 2;
Facility Type: Boarding Facility;
Age: 10; Gender: Gelding; Breed: Thoroughbred (TB); Usage: Pleasure Riding;
Clinical Signs: 103.5 Fever, submandibular lymph node swelling, and mucopurulent nasal discharge.; Confirmation Date: 5/16/2022; Horse Status: Isolated; Vaccination Status: Status Unknown;
Notes: A horse at a boarding facility in Hamilton County has tested positive for Strangles. For more information about Strangles go to: Strangles factsheet. 

Source: Florida Department Agriculture and Consumer Services

Number Confirmed: 1;
Notes: A horse in St. Lucie County has tested positive for Strangles. For more information about Strangles go to: Strangles factsheet. 

Source: Florida Department Agriculture and Consumer Services

Number Confirmed: 1;
Number Exposed: 39;
Facility Type: Boarding Facility;
Age: 5; Breed: Warmblood (WB); Onset of Clinical Signs: 5/14/2022;
Clinical Signs: fever, nasal discharge, enlarged submandibular lymph nodes as well as potential ocular neurological signs; Horse Status: Isolated; Vaccination Status: Status Unknown;
Notes: A horse at a boarding facility in Manatee County has tested positive for Strangles. For more information about Strangles go to: Strangles factsheet. 

Source: Florida Department Agriculture and Consumer Services

Number Confirmed: 1;
Notes: A horse in Indian River County has tested positive for Strangles. For more information about Strangles go to: Strangles factsheet. 

Source: Florida Department Agriculture and Consumer Services

Number Confirmed: 1;
Age: 4; Gender: Mare; Breed: Pony; Onset of Clinical Signs: 5/9/2022;
Clinical Signs: On 5/9/2022 horse was exhibiting signs of apprehension, depression, fever, muscle twitch, incoordination, inability to stand, and head pressing, and listlessness.; Confirmation Date: 5/17/2022; Horse Status: Deceased; Vaccination Status: Unvaccinated;
Notes: A horse in Columbia County has tested positive for Eastern Equine Encephalitis. For more information on EEE go to: EEE factsheet. 

Source: University of Pennsylvania, College of Veterinary Medicine, New Bolton Center

Number Confirmed: 1;
Facility Type: Veterinary Hospital;
Age: 23 year; Breed: Paint; Gender: Mare; Clinical Signs: Neurologic signs; Onset of Clinical Signs: 5/15/2022; Date of Confirmation: 5/16/2022; Horse Status: Affected And Alive;
Notes: The University of Pennsylvania’s large animal hospital, New Bolton Center in Kennett Square, Pennsylvania, has diagnosed a patient as having Equine Herpes Myeloencephalopathy (EHM caused by EHV-1). The 23 year old paint mare had surgery for colic and is currently isolated under quarantine. Fortunately, the patient was housed in our Moran Facility, which by its very design, prevents aerosolized transmission of infectious agents between patients. At this time, no additional cases have been identified. Together with officials from the Pennsylvania Department of Agriculture, New Bolton Center has determined the potential for exposure to other animals at New Bolton Center’s hospital to be extremely limited. The individual animals with potential exposure have been identified and are being monitored closely. No additional cases have been identified. Due to the limited nature of the potential exposure, New Bolton Center’s hospital operations have not been affected and are fully functional at this time. New Bolton Center continues to work closely with the Pennsylvania Department of Agriculture and will provide additional updates as they become available.;  For more information go to: EHM factsheet.

Source: Michigan Department of Agriculture and Rural Development

Number Confirmed: 2;
Number Suspected: 4;
Age: 14; Gender: Gelding; Breed: Thoroughbred (TB); Onset of Clinical Signs: 3/28/2022; Clinical Signs: Nasal discharge, fever; Horse Status: Recovering; Vaccination Status: Status Unknown; Age: 4; Gender: Mare; Breed: Thoroughbred (TB); Onset of Clinical Signs: 4/29/2022;
Clinical Signs: nasal discharge, enlarged submandibular lymph nodes; Confirmation Date: 5/11/2022; Horse Status: Recovering; Vaccination Status: Status Unknown;
Notes: Update 5/18/22: Previous Alert ID: 2544: Per information to the Michigan Department of Agriculture and Rural Development (MDARD), a total of two horses at this premises have been confirmed infected with strangles. For more information about Strangles go to: Strangles factsheet. 

Source: Michigan Department of Agriculture and Rural Development

Number Confirmed: 2;
Age: 29; Gender: Gelding; Breed: Tennessee Walking Horses; Clinical Signs: nasal discharge; Confirmation Date: 5/10/2022; Horse Status: Recovering; Vaccination Status: Unvaccinated; Age: 22; Gender: Gelding; Breed: Tennessee Walking Horses; Onset of Clinical Signs: 1/20/2022;
Clinical Signs: nasal discharge; Vaccination Status: Unvaccinated;
Notes: Update 5/18/22: Previously Alert ID 2583: A total of two horses have been confirmed infected with strangles in 2022 from this same premises. On May 17, 2022 the Michigan Department of Agriculture and Rural Development received information for this horse, which is still alive. For more information about Strangles go to: Strangles factsheet. 

Source: Oregon Department of Agriculture

Number Confirmed: 2;
Clinical Signs: Neurologic signs; Horse Status: Euthanized; Vaccination Status: Status Unknown;
Notes: A horse from Deschutes County tested positive for Equine Herpesvirus (EHV-1) on May 4, 2022. The horse had recently attended the Oregon Horse Center at the Prairie Arena in Eugene from April 22-25. The horse has not attended any other events since that time. This horse showed neurological symptoms but did not show signs of nasal discharge or an elevated temperature. Unfortunately, due to delayed reporting, this case was only recently shared with the department. A second horse from Deschutes County became symptomatic on May 13. The infected horse attended a show on May 6-7, also at the Oregon Horse Center in Eugene. Confirmation of EHV-1 came from the Oregon State University Oregon Veterinary Diagnostic Laboratory on May 16. Both horses were humanely euthanized and both ranches are currently under quarantine. The required quarantine will last a minimum of 28 days. For more information go to:  EHM factsheet.