Difference between revisions of "Streptococcus equi subsp. equi"
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m (Text replace - "[[Hindgut Fermenters - Horse - Anatomy & Physiology|" to "[[Equine Alimentary System - Anatomy & Physiology|") |
m (Text replace - "[[Nasal Cavity Inflammatory - Pathology" to "[[Rhinitis") |
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*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 [[ | + | *Typically [[Rhinitis#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 [[Equine Alimentary System - Anatomy & Physiology|horse]] | *Infection with ''Streptococcus equi'' occurs after contact with contaminated feed, water bowls or an infected carrier [[Equine Alimentary System - Anatomy & Physiology|horse]] | ||
*Organism remains viable in environment for months | *Organism remains viable in environment for months | ||
Revision as of 17:08, 15 February 2011
Causes Strangles
- Caused by very pathogenic Streptococcus equi subsp. equi
- Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx
- Streptococcus zooepidemicus and S. equisimilis are usually non-pathogenic
- Typically suppurative rhinitis, 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 horse
- Organism remains viable in environment for months
- Possibility of other sources of infection - in pharynx of in-contact dogs?, guttural pouches of persistently infected horses
- Attaches to nasopharyngeal epithelial cells, then mucosa, lymphatics and lymph nodes
- Multiplies extra-cellularly