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April 2014 by Dr Richard L'Estrange, BVSc (Hons) MANZVCS, Veterinary Operations Manager, Zoetis

Strangles is a bacterial infection caused by the organism Streptococcus equi subspecies equi (S.equi). Fever is generally the first clinical sign seen, followed by enlargement of the lymph nodes of the head and neck. These swellings can be severe enough to impede respiration completely, hence the name ‘strangles’. A profuse thick nasal discharge is also likely to occur.