Strangles is a highly contagious, bacterial infection of the upper respiratory tract caused by Streptococcus equi equi. The disease can affect horses, ponies and donkeys of all ages. Although the disease can make affected horses quite unwell for a couple of weeks, most make a full recovery. It is the highly contagious nature of strangles and the potential to shut down yards for weeks or even months that tends to cause the stigma that can surround the disease.
Read more about the signs, diagnosis and treatment of Strangles