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

Los Angeles County, CA

Alert ID: 422

January 10, 2017

A case of Equine Herpesvirus Myeloencephalopathy (EHM) has been confirmed on a new Los Angeles County premises. A 12-year-old Quarter Horse mare displaying severe neurologic signs has been confirmed positive for the wild type (non-neuropathogenic) Equine Herpesvirus-1 in the nasal swab and blood. Due to the severity of clinical signs the horse was euthanized. This horse has been classified as a case of EHM which requires regulatory action. The premises of 56 exposed horses in Los Angeles County has been placed under quarantine and all horses are being monitored for clinical signs with twice daily temperature monitoring. One additional 32 year-old horse on the property displaying a fever tested positive today for the wild type of EHV-1 in the nasal swab and blood. This horse has been placed in isolation on site. CDFA staff onsite have implemented enhanced biosecurity measures and has begun the epidemiologic investigation. For more information go to: https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html

Search for County

Disease Alerts