Breaking News
EDCC August 2026 Statistics
Learn More

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.



1 Week
2 Weeks
1 Month
2 Months
3 Months
3+ Months
No Results

The color range is based off of the selected End Date. If the End Date doesn't have a value it will use Today's Date.

West Nile Virus
Franklin County, WA
Outbreak Identifier: 7680
Alert ID: 5255
September 18, 2026
Confirmed Case(s) - No Quarantine

Asst State Veterinarian-WSDA

Number Confirmed: 1; 
Number Exposed: Unknown; 
Facility Type: Private Facility; 
Comments: 2 yr old filly under veterinary care and recovering.;
Search for County
West Nile Virus
Amador County, CA
Outbreak Identifier: 7679
Alert ID: 5254
September 17, 2026
Confirmed Case(s) - No Quarantine

California Department of Food and Agriculture

Number Confirmed: 1; 

Horse 1: 
Age: 5; Gender: Gelding; Breed: Quarter Horse (QH); Clinical Signs: ataxia, dull mentation, fever, falling to knees; Confirmation Date: 9/17/2026; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;

Comments: The fourteenth (14th) equine case of West Nile Virus in California in 2026 was confirmed in Amador County. On September 17, 2026, a 5-year-old vaccinated Quarter Horse gelding in Amador County displaying neurologic signs was confirmed positive for West Nile Virus. The gelding is alive and recovering.;
Search for County
West Nile Virus
Muskegon County, MI
Outbreak Identifier: 7678
Alert ID: 5253
September 17, 2026
Confirmed Case(s) - No Quarantine

Program Manager

Number Confirmed: 1; 
Number Exposed: 15; 
Facility Type: Farm; 
Comments: unvaccinated;
Search for County
West Nile Virus
Kent County, MI
Outbreak Identifier: 7677
Alert ID: 5252
September 17, 2026
Confirmed Case(s) - No Quarantine

Program Manager

Number Confirmed: 1; 
Number Exposed: Unknown; 
Facility Type: Farm; 
Comments: unvaccinated;
Search for County
West Nile Virus
MicMinn County, TN
Outbreak Identifier: 7676
Alert ID: 5251
September 17, 2026
Confirmed Case(s) - No Quarantine

Tennessee Department of Agriculture

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown;
Search for County
West Nile Virus
Union County, PA
Outbreak Identifier: 7675
Alert ID: 5250
September 17, 2026
Confirmed Case(s) - No Quarantine

Pennsylvania Department of Agriculture

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown;
Search for County
West Nile Virus
Lancaster County, PA
Outbreak Identifier: 7674
Alert ID: 5249
September 17, 2026
Confirmed Case(s) - No Quarantine

Pennsylvania Department of Agriculture

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown;
Search for County
West Nile Virus
Dauphin County, PA
Outbreak Identifier: 7673
Alert ID: 5248
September 17, 2026
Confirmed Case(s) - No Quarantine

Pennsylvania Department of Agriculture

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown;
Search for County
Strangles
Douglas County, KS
Outbreak Identifier: 7672
Alert ID: 5247
September 17, 2026
Exposed Horses - Voluntary Quarantine

Attending veterinarian

Number Confirmed: 2; 
Number Suspected: 2; 
Number Exposed: Unknown; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 26; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Companion; Onset of Clinical Signs: 8/29/2026; Clinical Signs: Fever, nasal discharge, swollen lymph nodes; Confirmation Date: 9/3/2026; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated;
Search for County
West Nile Virus
Minidoka County, ID
Outbreak Identifier: 7671
Alert ID: 5246
September 16, 2026
Confirmed Case(s) - No Quarantine

State Veterinarian

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Facility Type: Veterinary Hospital;
Search for County