Equine Strangles Outbreaks in Wisconsin from Late 2021 to Early 2022

The Wisconsin Department of Agriculture, Trade and Consumer Protection reported various positive equine strangles cases thought to be related to rescue situations.

Equine strangles has been confirmed by positive laboratory reports from the following Wisconsin counties: Dunn, Forest, Marathon, Oneida, Rock, Sawyer, St. Croix, Walworth and Waukesha. iStock/Hagen CD

The Wisconsin Department of Agriculture, Trade and Consumer Protection noted through the Equine Disease Communication Center that from November 2021 until present, equine strangles has been confirmed by positive laboratory reports from the following counties: Dunn, Forest, Marathon, Oneida, Rock, Sawyer, St. Croix, Walworth and Waukesha. 

The number horses on each premises, how many are horses are exposed, or exactly when the outbreaks started at each location is unknown. Not all the horses were tested when the clinical signs began and not all animals were tested or reported. 

The outbreak appears to be related to horses that came from rescue situations and were moved around. 

All known cases are under a voluntary quarantine with recommendations that owners work with their veterinarians and implement appropriate biosecurity procedures.

For more information about equine strangles read this Factsheet.

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