STRANGLES is a disease which strikes fear in the hearts of horse owners; even its very name is emotive. Strangles is the common name given to the bacterial infection, affecting horses and donkeys, which is characterised by abscessation of the lymph nodes in the head and neck. It is one of the most frequently diagnosed respiratory infections in horses worldwide and it has been described for over 800 years. This infection has the potential to cause major economic losses to the equine industry both within Ireland and worldwide due to its prolonged course, extended recovery period and associated serious complications, including possible fatalities.

Recent research has highlighted the extent of the problem within Ireland, estimating that over 40% of horses in Ireland have been exposed to this disease and may be chronic carriers of infection. Disease prevalence is generally considered to be much higher than official reports. The Irish Equine Centre diagnostic laboratory cultures the causative organism from many new outbreaks annually. Established outbreaks may last for months or even years particularly in large horse populations with frequent new arrivals that provide a supply of susceptible animals. Due to the nature of the equine industry, with widespread movement of horses for sales, breeding and competition, the potential for spread of this contagious disease is immense.