Changes

*Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx

*Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx

*''Streptococcus zooepidemicus'' and ''S. equisimilis'' are usually non-pathogenic

*''Streptococcus zooepidemicus'' and ''S. equisimilis'' are usually non-pathogenic

*Typically [[Nasal cavity - inflammatory#Infectious causes of rhinitis|suppurative rhinitis]], [[Nasopharynx - inflammatory#Infectious causes of pharyngitis|pharyngitis]] and '''lymphadenitis''' of the lymph nodes of the head and neck that drain the upper respiratory tract, these lymph nodes often rupture and discharge pus 2-3 weeks after the onset of infection  

*Typically [[Nasal cavity - inflammatory#Infectious causes of rhinitis|suppurative rhinitis]], [[Nasopharynx Inflammatory - Pathology#Infectious causes of pharyngitis|pharyngitis]] and '''lymphadenitis''' of the lymph nodes of the head and neck that drain the upper respiratory tract, these lymph nodes often rupture and discharge pus 2-3 weeks after the onset of infection  

*Infection with ''Streptococcus equi'' occurs after contact with contaminated feed, water bowls or an infected carrier [[Hindgut Fermenters - Horse - Anatomy & Physiology|horse]]

*Infection with ''Streptococcus equi'' occurs after contact with contaminated feed, water bowls or an infected carrier [[Hindgut Fermenters - Horse - Anatomy & Physiology|horse]]

*Organism remains viable in environment for months

*Organism remains viable in environment for months

*Common disease in cattle, and can occur in swine

*Common disease in cattle, and can occur in swine

*Caused by infection with [[Fusobacterium|''Fusobacterium necrophorum'']]   

*Caused by infection with [[Fusobacterium|''Fusobacterium necrophorum'']]   

*Lesions may also be found in other parts of the [[Nasopharynx - inflammatory#Infectious causes of pharyngitis|oropharynx]]   

*Lesions may also be found in other parts of the [[Nasopharynx Inflammatory - Pathology#Infectious causes of pharyngitis|oropharynx]]   

*The bacterium usually gains entry through damaged mucosal surfaces e.g. after viral infections or injury following (poor!) use of dosing guns, coarse poor quality roughage

*The bacterium usually gains entry through damaged mucosal surfaces e.g. after viral infections or injury following (poor!) use of dosing guns, coarse poor quality roughage

*Results in severe acute neutrophilic [[Larynx Inflammatory - Pathology#Infectious causes of laryngitis|laryngitis]]

*Results in severe acute neutrophilic [[Larynx Inflammatory - Pathology#Infectious causes of laryngitis|laryngitis]]