Michigan colt’s strangles case marks second infection at premises

A Michigan weanling colt in Marquette County tested positive for strangles on April 20 after developing yellow nasal and ocular discharge on March 20, according to EDCC Health Watch reporting published by EquiManagement on May 1, 2026. The colt is recovering. The case is notable because it’s the second confirmed strangles case on that premises, after an earlier case confirmed March 5, and one additional horse is suspected positive. Broader EDCC-linked reporting also shows Michigan has seen other recent strangles activity in multiple counties, including earlier reports involving horses in Kalamazoo and Washtenaw counties, underscoring that this isn’t an isolated event. (equimanagement.com)

Why it matters: For veterinary professionals, this is another reminder that strangles remains a practical biosecurity problem, not just an occasional headline. AAEP guidance describes strangles as highly contagious, spread by direct contact and contaminated equipment or environments, with clinically normal horses sometimes serving as carriers. That makes prompt isolation, movement controls, temperature monitoring, diagnostic testing, and clear communication with barns and pet parents especially important when a second premises-linked case is confirmed. (aaep.org)

What to watch: Watch for whether Michigan reports additional linked cases at the Marquette County premises, and whether testing identifies more exposed or carrier horses before quarantine measures can be lifted. (equimanagement.com)