Wisconsin mare’s strangles case puts intake biosecurity in focus

A mare in Jefferson County, Wisconsin, has tested positive for strangles after arriving from a rescue, according to an EDCC Health Watch report published by Equus Magazine. The case adds to a steady stream of equine infectious disease alerts tracked through the Equine Disease Communication Center, which publishes verified reports from veterinarians and state animal health officials. Strangles is caused by Streptococcus equi subspecies equi and spreads through direct contact and contaminated equipment, water sources, or surfaces. (equusmagazine.com)

Why it matters: For equine veterinarians and facility managers, the report is another reminder that incoming horses, especially those with unknown health or vaccination histories, can introduce highly contagious respiratory disease into barns, rescues, and boarding settings. AAEP guidance recommends isolating febrile or clinically suspect horses immediately, separating groups into clean, exposed, and sick cohorts during an outbreak, and quarantining new arrivals for three weeks while monitoring temperatures. The same guidance notes that horses may remain infective for up to six weeks after clinical signs resolve unless testing confirms they are no longer shedding. (aaep.org)

What to watch: Watch for any follow-up EDCC or state-level notice on additional exposed horses, quarantine measures, or linked cases in Wisconsin. (equinediseasecc.org)