TurnoutHQ+ Newsroom · Published April 14, 2026 · Updated September 8, 2026
Key Takeaway
Equine health officials have confirmed strangles cases in Waupaca, Brown, and Sauk counties, leading to the exposure of nearly 30 horses and emphasizing the need for strict facility biosecurity.
What Happened
Equine health officials in Wisconsin have confirmed three positive cases of strangles across Waupaca, Brown, and Sauk counties. The cases, which were reported between March 31 and April 9, 2026, have resulted in dozens of horses being potentially exposed across three different facilities.
The first case involved a 12-year-old Quarter Horse mare in Waupaca County who presented with nasal discharge and post-vaccination fevers. In Brown County, a 14-year-old Kentucky Mountain Horse mare tested positive at a private facility where three other horses are currently suspected of having the infection. The final confirmed case in Sauk County involved a 5-year-old Morgan mare who tested positive for a "triple threat" of respiratory issues: strangles, equine herpesvirus-4 (EHV-4), and equine rhinitis B virus (ERBV).
All confirmed horses are currently in recovery. The Equine Disease Communication Center (EDCC) has verified these reports to alert local horse owners of the potential for further spread.
Why It Matters
Strangles is highly contagious and can cause significant disruption to boarding stables and training programs. Because the bacteria (Streptococcus equi) can live on surfaces like water buckets, grooming tools, and hitching rails, a single case often leads to a mandatory facility-wide quarantine.
For barn owners and trainers, these cases serve as a reminder that "silent carriers", horses that look healthy but still shed the bacteria, are common. Recovered horses can remain contagious for six weeks or longer, meaning that clearing a facility of the disease is a long-term commitment that requires strict biosecurity and veterinary oversight. The Sauk County case also highlights the risk of "co-infections," where a horse's immune system is taxed by multiple viruses simultaneously, potentially leading to more severe clinical signs.
Discipline Context
These outbreaks have a broad impact on all equestrian activities in the region, particularly the hunter/jumper, dressage, and western circuits where horses frequently travel to shows.
Because strangles is spread through direct contact and contaminated environments, any facility that hosts clinics, horse shows, or has a high volume of "ins and outs" must remain vigilant. Youth riders and 4-H members should be particularly careful about sharing equipment or allowing horses to touch noses at upcoming spring events. While a vaccine is available, it is not 100% effective, making secondary biosecurity measures, such as hand-washing and disinfecting trailer pads, the primary line of defense for competitive riders.
Quick Facts
- Governing Body: Equine Disease Communication Center (EDCC) / Wisconsin Department of Agriculture.
- Confirmed Locations: Waupaca, Brown, and Sauk Counties, Wisconsin.
- Total Confirmed Cases: 3 (as of April 13, 2026).
- Total Potential Exposures: At least 27 horses across three facilities.
- Clinical Signs Reported: Fever, nasal discharge, cough, and swollen lymph nodes.
- Causative Agent: Streptococcus equi subsp. equi.
Owners reviewing their own turnout and health routines can source equine health and turnout supplies.