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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.

Alert ID: 1523
November 18, 2019
Equine Herpesvirus- Neurologic
Chester County, PA
Quarantine Released
Source: Pennsylvania Department of Agriculture

Notes: Following 21 days with no additional cases of EHV-1 infection identified in any of the other horses at the fox hunting and boarding stables in Chester County, PA, the Order of Special Quarantine posted on October 29, 2019 at that premises has been revoked. The only case of EHV-1 identified remains the index EHM patient.

Alert ID: 1522
November 15, 2019
Equine Herpesvirus- Neurologic
Remington Park Racetrack, Oklahoma County, OK
Confirmed case(s): Official Quarantine
Source: Oklahoma Department of Agriculture

Number Confirmed: 1;
Number Exposed: 66;
Age: 3; Gender: Mare; Breed: Thoroughbred (TB); Onset of Clinical Signs: 11/12/2019;
Clinical Signs: Acute Onset, Ataxia, Fever, Recumbency, Unable to Rise; Confirmation Date: 11/14/2019; Horse Status: Euthanized; Vaccination Status: Status Unknown;
Notes: A 3 yr old TB filly at the Remington Park Racetrack, in Oklahoma County was euthanized due to severity of neurologic signs and was confirmed positive by PCR for EHV-1. The horse was stabled at Remington Park. One barn with 66 exposed horses has been quarantined. ;

Alert ID: 1521
November 15, 2019
Eastern Equine Encephalitis
Beaufort County, SC
Confirmed Case(s): No Quarantine
Source: South Carolina State Veterinarian

Number Confirmed: 1;
Age: 5; Gender: Gelding; Breed: Grade;  Horse Status: Desceased; Vaccination Status: Unvaccinated;
Notes: 2019 EEE County Summary-Chesterfield – 1, Marlboro – 1, Sumter – 1, Beaufort - 1;

Alert ID: 1520
November 15, 2019
Equine Herpesvirus- Neurologic
San Bernardino County, CA
Outbreak Update
Source: California Department of Food and Agriculture

Notes: One additional horse, a 22-year-old Paint gelding, has been confirmed positive for EHV-1 myeloencephalopathy on the index premise. The horse was euthanized due to the severity of clinical signs. Three additional febrile horses on the premise have also been confirmed positive for EHV-1. CDFA continues to monitor the situation. ;

 

Alert ID: 1519
November 15, 2019
Vesicular Stomatitis
Platte County, WY
Confirmed case(s): Official Quarantine
Source: United States Department of Agriculture

Notes: The USDA Animal and Plant Health Inspection Service has released a new situation report on November 14, 2019 confirming vesicular stomatitis in 1 new premises in Platte County Wyoming.  For more information go to https://www.aphis.usda.gov/animal_health/downloads/animal_diseases/vsv/sitrep-11-14-19.pdf

Alert ID: 1518
November 14, 2019
Equine Herpesvirus- Neurologic
Loudoun County, VA
Quarantine Released
Source: State Veterinarian’s Office of the Virginia Department of Agriculture and Consumer Services

Notes: No other horses on the farm showed clinical signs of EHV-1 and tested positive. The quarantine was released after 21 days from the positive test of the index case.

Alert ID: 1516
November 13, 2019
Equine Herpesvirus- Neurologic
Clark County, NV
Quarantine Released
Source: Nevada Department of Agriculture

Notes: As a result of there being no additional positive cases of EHV-1 discovered during the extended quarantine period, the quarantine of the Boulder City facility was terminated effective November 12, 2019.

Alert ID: 1515
November 13, 2019
Equine Herpesvirus- Neurologic
Weber County, UT
Quarantine Released
Source: Utah Department of Agriculture and Food

Notes: Two horses on the index premises exposed to the initially confirmed horse spiked mild fevers which quickly resolved and displayed no other clinical signs. An additional exposed horse on the index premises spiked a fever and displayed neurologic symptoms which completely resolved three days later. No cases outside of the index premises have been reported in connection with this incident. The official quarantine on the index premises has been released as of 11/13/19.

Alert ID: 1514
November 12, 2019
Strangles
Ingham County, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

Number Confirmed: 1;
Number Exposed: 9;
Age: 8; Gender: Mare; Breed: Pony; Onset of Clinical Signs: 9/25/2019;
Clinical Signs: Nasal Discharge, Abscessed lymph nodes; Confirmation Date: 11/8/2019; Horse Status: Recovering; Vaccination Status: Vaccinated;
Notes: The pony was not tested until November 4, 2019. ;

 

Alert ID: 1513
November 08, 2019
Equine Herpesvirus- Neurologic
San Bernardino, CA
Confirmed case(s): Official Quarantine
Source: California Department of Food and Agriculture

Number Confirmed: 1;
Number Exposed: 20;
Age: 13; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 10/29/2019;
Clinical Signs: Fever, Hypermetria, Neurological Signs; Confirmation Date: 11/5/2019; Horse Status: Euthanized; Vaccination Status: Vaccinated;
Notes: A 13-year-old Quarter Horse mare in San Bernardino county displaying neurologic signs and fever has been confirmed positive for Equine Herpesvirus-1. The mare was euthanized due to severity of symptoms on October 29, 2019 and was confirmed positive on necropsy on November 5, 2019. Twenty (20) exposed horses on the home premise have been quarantined with enhanced biosecurity measures including twice daily temperature monitoring. Any horse displaying clinical signs or a temperature over 101.5F shall be reported to the veterinarian for evaluation and potential nasal swab and blood sampling. The positive horse has no epidemiological links to any other EHV-1 cases in California and there has been no recent movement off of the property. For more information about EHM go to:  https://aaep.org/sites/default/files/Documents/DiseaseFactsheetEHM.pdf