Strangles in Horses: Clinical Signs, Diagnosis, and Biosecurity
1. Introduction Strangles is an upper respiratory tract infection of horses that is highly contagious. The disease is caused by the bacterium *Streptococcus equi* subsp. *equi*. The disease is called strangles because of the extreme swelling of the lymph nodes in the throat area that can literally strangle the horse. Clinical manifestation of Strangles ( Streptococcus equi ) in horses, showing characteristic lymph node swelling and purulent nasal discharge. Early diagnosis of these anatomical landmarks is vital for equine biosecurity. | Image: VetInsight PK 2. Transmission The disease is transmitted quickly via: Direct Contact: Infected horses transmit the disease to other horses by nose-to-nose contact. Indirect Contact: Infected horses transmit the disease via the sharing of water containers, grooming equipment, and even the hands or clothing of the horse owner. Shedding: Infected horses transmit the disease even after showing signs of wellness. 3. Clin...