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- Neurologic

Sonoma and Sacromento Counties, CA

Outbreak Identifier: 4776

Alert ID: 2145

July 29, 2021

Confirmed Case(s) - Official Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 6;
Number Suspected: 4;
Facility Type: Showgrounds;
Age: 6; Gender: Mare; Breed: Warmblood (WB); Onset of Clinical Signs: 7/23/2021;
Clinical Signs: Hind-end Weakness, limb edema, Nystagmus, Recumbency; Confirmation Date: 7/24/2021; Horse Status: Euthanized; Vaccination Status: Vaccinated;
Notes: Update 7-29-21 Original Alert ID: 2139: One additional 15-year-old Warmblood mare from the index Sacramento county home premises who attended, and was asymptomatic at, the Sonoma county event displayed mild neurological signs and was transported to an offsite veterinary hospital in isolation on July 27th and confirmed negative for EHV-1 on July 28th. No additional horses from the Sonoma county event or the home premise have shown clinical signs at this time. CDFA continues to actively monitor this situation.;

Search for County

Disease Alerts