Difference between revisions of "Streptococci"

Revision as of 11:33, 29 December 2008

Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx
Streptococcus zooepidemicus and S. equisimilis are usually non-pathogenic
S. equi is more pathogenic and is the cause of strangles with rhinitis, pharyngitis, lymphadenitis, myositis
S. equi may be involved in cutaneous lesions

S. zooepidemicus can cause similar signs to strangles in horses, may accompany COPD

In horses sometimes purpura haemorrhagica follows, especially during recovery from strangles
In catarrhal stomatitis

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 ===Overview===
-*Gram positive cocci
+*Cause suppurative infections in many different animals
-*
+*Cause mastitis, metritis, polyarthritis, meningitis
+===Characteristics===
+*Gram positive cocci forming chains
+*Catalase negative, facultative anaerobes
+*Fastitidious - require enriched media such as blood or serum
+*Small haemolytic, translucent colonies
+*Catalase negative
+*Susceptible to desiccation
+*Commensals on mucous membranes of upper respiratory and lower urogenital tract
+===Pathogenicity===
+===Clinical infections===
+===Diagnosis===
+===Treatment===
+===Control===