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.

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West Nile Virus

Clark County, WI

Alert ID: 739

October 30, 2017

Source: Wisconsin Department of Agriculture, Trade, and Consumer Protection

The Wisconsin Department of Agriculture, Trade, and Consumer Protection has confirmed a case of Equine West Nile Virus in a 7-year-old unvaccinated Quarter Horse mare from Clark County. She showed minor neurologic signs on 10/21/17 (lip droop, slight incoordination). She went down on 10/22/17 but got back up. On 10/23/17, she went down again and a local veterinarian was called. He sampled and treated her, but she died a couple of days later. NVSL performed the laboratory diagnostic tests. This is the 22nd case of equine WNV reported in Wisconsin in 2017.

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