California Reports Strangles and 21st Equine WNV Case for 2017

California has reported a strangles quarantine from late November and its 21st case of equine West Nile virus (WNV).

An attending veterinarian has reported a quarantine for strangles was established at a private facility in Sonoma County, California, on November 26, 2017. An 11-year-old warmblood gelding presented with purulent nasal discharge, cough and a fever. Subsequent testing confirmed that the horse was positive for strangles. The horse is receiving treatment and is in isolation. The facility is on voluntary restriction of horse movement into or out of the barn until December 14, 2017.

The California Department of Food and Agriculture confirmed the 21st case of equine West Nile virus in California for 2017. The 2-year-old Quarter Horse gelding displaying ataxia in Glenn County, California, is recovering. The vaccination status for this horse is unknown. For more information visit

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