Equine Disease Communication Center

Equine Disease Communication Center The Equine Disease Communication Center (EDCC) works to protect horses and the horse industry from the threat of infectious diseases in North America.

For more information on how the EDCC works, go to http://equinediseasecc.org The communication system is designed to seek and report real time information about disease outbreaks similar to how the Centers for Disease Control and Prevention (CDC) alerts the human population about diseases in people. The goal of the EDCC is to alert the horse industry about disease outbreak information to help mitigate and prevent the spread of disease. Ultimately frequent and accurate information about diseases outbreaks improves horse welfare and helps to prevent negative economic impact that can result from decreased horse use due to a fear of spreading infection. As part of the National Equine Health Plan the EDCC will serve as part of the communication to help educate and promote research about endemic and foreign disease. Working in cooperation with state animal health officials and the United State Department of Agriculture, the EDCC seeks information about current disease outbreaks from news media, social media, official state reports and veterinary practitioners. Once information is confirmed, it is immediately posted on this website and messages sent to all states and horse organizations by email. Daily updates are posted until each outbreak is contained or deemed no longer a threat. To sign up for the EDCC Disease Outbeak Alert email list, go here: http://eepurl.com/b0dK9z

The EDCC is made possible by generous donations from organizations and horse owners. Please visit our sponsors that have generously supported this program for the benefit of the health and welfare of horses. To learn how you can help go to SUPPORT

When an Infectious Disease Threatens, Who Do You Call?The Equine Disease Communication Center (EDCC) provides real-time ...
09/29/2026

When an Infectious Disease Threatens, Who Do You Call?

The Equine Disease Communication Center (EDCC) provides real-time disease alerts, current disease information, and trusted biosecurity resources for veterinarians, horse owners, event organizers, and equine professionals.

During the 2025 EHM outbreak associated with the WPRA World Finals and Elite Barrel Race in Waco, Texas, EDCC showed how important timely communication can be. When the outbreak spread to involve horses in eight states, the horse industry turned to the EDCC for reliable information as the situation developed. In the first 4 weeks of the outbreak there were more than 4 million visitors to the EDCC page seeking and sharing the latest information.

Today, EDCC continues to monitor and communicate information about emerging and ongoing disease threats, including New World Screwworm and West Nile virus.

But EDCC can provide this service only with donor support.
Your donation helps keep the EDCC ready to respond when the next disease threat emerges.

Please help support the EDCC today:
Donate to the EDCC by following this link https://equinediseasecc.org/support-us

Every gift makes a difference.
Thank you for supporting the EDCC and for your commitment to protecting equine health.

Nathaniel A. White II, DVM, MS, DACVS
Director, Equine Disease Communication Center

There is nothing worse than not knowing when your horse is at risk of being infected.  Rapid spread of infectious diseases can do irreparable harm to horse health and cripple the horse industry. That is where the EDCC helps by providing the current facts about infectious diseases.

September 28, 2026Pigeon FeverHarney County, OR. Alert ID: 5276Suspected Case: Voluntary Quarantine Source: State Depart...
09/28/2026

September 28, 2026
Pigeon Fever
Harney County, OR.
Alert ID: 5276
Suspected Case: Voluntary Quarantine
Source: State Department of Agriculture
Number Suspected: 1;
Number Exposed: 5;

For more information, go to

Pigeon Fever caused by Corynebacterium pseudotuberculosis is a bacteria most often found in the Southwestern United States but reported throughout North America. Outbreaks in areas in which the bacteria had previously not been or only rarely reported have occurred during times of drought.

September 28, 2026West Nile VirusWayne County, MI. Alert ID: 5275Confirmed Case: No Quarantine Source: Program ManagerNu...
09/28/2026

September 28, 2026
West Nile Virus
Wayne County, MI.
Alert ID: 5275
Confirmed Case: No Quarantine
Source: Program Manager
Number Confirmed: 1;
Number Exposed: 18;
Facility Type: Stable;

For more information, go to

West Nile virus (WNV) is a mosquito-borne flavivirus. WNV primarily causes disease in birds, humans, and horses and is transmitted by many different species of mosquitoes. Since 1999, more than 27,600 U.S. horses have been confirmed with WNV neuro-invasive disease with an estimated average case fata...

September 28, 2026Equine Infectious AnemiaLos Angeles County, CA. Alert ID: 5274Confirmed Case: Official Quarantine Sour...
09/28/2026

September 28, 2026
Equine Infectious Anemia
Los Angeles County, CA.
Alert ID: 5274
Confirmed Case: Official Quarantine
Source: California Department of Food and Agriculture

Number Confirmed: 1;
Number Exposed: 43;
Number Euthanized: 1;
Horse 1:
Age: 17;
Gender: Gelding;
Breed: Thoroughbred (TB);
Horse Status: Euthanized;
Comments: A 17–year–old Thoroughbred gelding in Los Angeles County was confirmed positive for Equine Infectious Anemia (EIA). Forty-three (43) potentially exposed horse on the home premises have initially tested negative for EIA and will remain under quarantine until their sixty (60) day retest as per CDFA and USDA program requirements. CDFA has been on site with continued monitoring of the situation.;

For more information, go to

Equine infectious anemia (EIA) is a potentially fatal blood-borne infectious viral disease that produces a persistent infection among equids nearly worldwide.

September 28, 2026West Nile VirusFremont County, WY. Alert ID: 5273Confirmed Case: No QuarantineSource: State Animal Hea...
09/28/2026

September 28, 2026
West Nile Virus
Fremont County, WY.
Alert ID: 5273
Confirmed Case: No Quarantine
Source: State Animal Health Official
Number Confirmed: 1;
Number Exposed: Unknown;

For more information, go to

West Nile virus (WNV) is a mosquito-borne flavivirus. WNV primarily causes disease in birds, humans, and horses and is transmitted by many different species of mosquitoes. Since 1999, more than 27,600 U.S. horses have been confirmed with WNV neuro-invasive disease with an estimated average case fata...

September 25, 2026Pigeon FeverJosephine County, OR.Alert ID: 5272Confirmed Case: Voluntary Quarantine Source: State Depa...
09/25/2026

September 25, 2026
Pigeon Fever
Josephine County, OR.
Alert ID: 5272
Confirmed Case: Voluntary Quarantine
Source: State Department of Agriculture
Number Confirmed: 1;
Number Exposed: 2;

For more information, go to

Pigeon Fever caused by Corynebacterium pseudotuberculosis is a bacteria most often found in the Southwestern United States but reported throughout North America. Outbreaks in areas in which the bacteria had previously not been or only rarely reported have occurred during times of drought.

September 24, 2026Equine Herpesvirus-RespiratoryBaltimore County, MD.Investigation InitiatedSource: Maryland Department ...
09/24/2026

September 24, 2026
Equine Herpesvirus-Respiratory
Baltimore County, MD.
Investigation Initiated
Source: Maryland Department of Agriculture
Number Confirmed: 1;
Number Suspected: Unknown;
Number Exposed: Unknown;
Facility Type: Private Facility;
Horse 1:
Age: 4;
Gender: Mare;
Breed: Warmblood (WB);
Usage: Horse Show;
Onset of Clinical Signs: 9/20/2026;
Confirmation Date: 9/22/2026;
Horse Status: Affected And Alive;
Vaccination Status: Status Unknown;

For more information, go to

Equine herpesvirus, often abbreviated to EHV, is a family of equine viruses named by numbers, with EHV-1 and EHV-4 posing the most risk for domestic horses.

September 24, 2026West Nile VirusCecil County, MD. Alert ID: 5270Investigation Initiated Source: Maryland Department of ...
09/24/2026

September 24, 2026
West Nile Virus
Cecil County, MD.
Alert ID: 5270
Investigation Initiated
Source: Maryland Department of Agriculture
Number Confirmed: 1;
Number Suspected: Unknown;
Number Exposed: Unknown;
Number Euthanized: 1;
Facility Type: Private Facility;
Horse 1:
Age: 15;
Gender: Mare;
Breed: Quarter Horse (QH);
Usage: Pleasure Riding;
Onset of Clinical Signs: 9/10/2026;
Confirmation Date: 9/18/2026;
Horse Status: Euthanized;
Vaccination Status: Status Unknown;

For more information, go to

West Nile virus (WNV) is a mosquito-borne flavivirus. WNV primarily causes disease in birds, humans, and horses and is transmitted by many different species of mosquitoes. Since 1999, more than 27,600 U.S. horses have been confirmed with WNV neuro-invasive disease with an estimated average case fata...

September 24, 2026Pigeon FeverDeschutes County, OR. Alert ID: 5269Confirmed Case: Official Quarantine Source: State Depa...
09/24/2026

September 24, 2026
Pigeon Fever
Deschutes County, OR.
Alert ID: 5269
Confirmed Case: Official Quarantine
Source: State Department of Agriculture
Number Confirmed: 1;
Number Suspected: 4;
Number Exposed: 23;

For more information, go to

Pigeon Fever caused by Corynebacterium pseudotuberculosis is a bacteria most often found in the Southwestern United States but reported throughout North America. Outbreaks in areas in which the bacteria had previously not been or only rarely reported have occurred during times of drought.

September 23, 2026West Nile VirusBox Elder County, UT. Alert ID: 5268Confirmed Case: No Quarantine Source: Utah Departme...
09/23/2026

September 23, 2026
West Nile Virus
Box Elder County, UT.
Alert ID: 5268
Confirmed Case: No Quarantine
Source: Utah Department of Agriculture and Food
Number Confirmed: 1;
Number Exposed: Unknown;

For more information, go to

West Nile virus (WNV) is a mosquito-borne flavivirus. WNV primarily causes disease in birds, humans, and horses and is transmitted by many different species of mosquitoes. Since 1999, more than 27,600 U.S. horses have been confirmed with WNV neuro-invasive disease with an estimated average case fata...

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