June 6th, 2023
The Northwest Horse Source
The Northwest Horse Source is your all breed, all discipline resource covering the care, training, keeping and enjoyment of horses. Check out the latest Outbreak Alerts!
Potomac Horse Fever
This alert is an equine related disease outbreak or other emergency, disaster, or critical announcement in our distribution area. Alerts regularly include Washington, Oregon, Idaho, California, and sometimes Utah, Nevada, Wyoming and Arizona.

Outbreak Alerts: June 06, 2023 - Vesicular Stomatitis in Orange County, CA

Confirmed Case(s) - Official Quarantine

Source: USDA

VSV Situation Report 6/6/2023

Since the last situation report (6/2/2023), there have been 18 new VSV-affected premises identified (11 confirmed positive, 7 suspect) in four counties (Orange, Riverside, San Bernardino, and San Diego Counties) in California. To date, all confirmed cases have been vesicular stomatitis New Jersey virus (VSNJV) serotype. Updates are as follows:

California
  • Orange County (New Infected County) – 1 confirmed positive equine premises
  • Riverside County1 new confirmed positive and 3 new suspect equine premises
  • San Bernardino County – 1 new confirmed positive and 1 new suspect equine premises
  • San Diego County – 8 new confirmed positive and 3 new suspect equine premises
  • Since the last situation report (6/2/2023), the following premises have been released from quarantine: 1 bovine premises in San Diego County.
Since the start of the outbreak, 62 VSV-affected premises have been identified (25 confirmed positive, 37 suspect) in 1 state, California. Sixty-one (61) of these premises have had only equine species clinically affected in 4 counties (Orange, Riverside, San Bernardino, and San Diego Counties) and one (1) premises has had clinically affected cattle (San Diego County).

Additional information and maps of the affected area are contained in the attached situation report. The situation report is posted publicly on the APHIS and accessible at the following link: https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-disease-information/equine/vsv/vesicular-stomatitis

See past published Outbreak Alerts: http://nwhorsesource.com/category/news/alerts

Outbreak Alerts: June 06, 2023 - Equine Herpesvirus- Neurologic in San Luis Obispo County, CA

Confirmed Case(s) - Quarantine Released

Source: California Department of Food and Agriculture

Number Confirmed: 1
Number Exposed: 
42

Comments: 
The positive horse has had two (2) consecutive negative tests seven (7) days apart. No additional cases were confirmed during the quarantine monitoring period. The quarantine has been released.

See past published Outbreak Alerts: http://nwhorsesource.com/category/news/alerts

Outbreak Alerts: June 06, 2023 Equine Influenza in Snohomish County, WA

Confirmed Case(s) - Voluntary Quarantine

Source: State Veterinarian's Office

Number Confirmed: 
Number Suspected: Unknown
Number Exposed: Unknown
Facility Type: Boarding Facility
Comments: Horses have traveled to event(s) where it was noted that many were coughing. Brought home and developed symptoms. Tested 3. Owner placed voluntary quarantine and horses are recovered. They were under the care of a veterinarian.

See past published Outbreak Alerts: www.nwhorsesource.com/category/news/alerts

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