Outbreaks | Equine Disease Communication Center

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.

Disease

Outbreak States

Start Date

End Date

Search by Alert ID

Search by Outbreak ID

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.

Equine Herpesvirus- Respiratory

McClain County, OK

Outbreak Identifier: 7229

Alert ID: 4754

November 25, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: Oklahoma State Veterinarian

Number Confirmed: 1;
Number Suspected: Unknown;
Number Exposed: Unknown;
Comments: Horse attended the WPRA in Waco. Horse had a fever on 11/13/25 or 11/14/25 with no other clinical symptoms. Sample was obtained on 11/19/2025 and results were reported on 11/25/2025. Only nasal swabs were positive for EHV-1 neuropath and non-neuropath. No other clinical signs reported since the fever.;

Search for County

Disease Alerts