A highly contagious equine disease has been reported in the Fox Valley, prompting the Waupaca County Fair to cancel all horse-related events this year as a precaution.Strangles, a bacterial infection that affects horses, has raised concerns as county fair season gets underway across the region. The disease causes swelling in a horses lymph nodes, along with fever and fatigue, and can spread quickly when animals gather at shows and fairs.Watch th…