Difference between revisions of "Category:Streptococcus species"

Revision as of 10:30, 17 May 2010

Cause suppurative infections in many different animals
Cause abscess formation and septicaemia
Cause mastitis, metritis, polyarthritis, meningitis
Primary or secondary infections following viral infection
Neonatal septicaemia related to maternal genital tract infection
Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx
Streptococcus zooepidemicus and S. equisimilis are usually non-pathogenic
Involved in peritonitis in pigs, pyothorax, osteomyelitis, catarrhal stomatitis
In infectious arthritis of sheep, arthritis in calves, arthritis in horses and arthritis in pigs
Often commensals on mucous membranes of upper respiratory and lower urogenital tract
Opportunistic infections

Beta haemolysis (complete with clear zones surrounding colonies)
Alpha haemolysis (partial with green zones surrounding colonies)
Lancefield grouping - serology based on group-specific polysaccharide in cell wall
Biochemical testing

Beta-haemolytic strains more pathogenic than alpha-haemolytic strains
Virulence factors include streptolysins, hyaluronidase, DNase, streptokinase and proteases
S. pyogenes, S. pneumoniae and some strains of S. equi have polysaccharide capsules which are antiphagocytic
S. pyogenes and S. equi have antiphagocytic cell wall M proteins

The following 10 pages are in this category, out of 10 total.

@@ Line 69: / Line 69: @@
 ===''[[Enterococcus faecalis]]''===
-===''S. canis''===
+[[Streptococcus canis]]
-*Found in vagina and anal mucosa of carnivores
-*Neonatal septicaemia, suppurative infections, toxic shock syndrome
-*In [[Bacterial skin infections - Pathology#Deep pyoderma|deep pyoderma]] and subcutaneous abscesses
 ===''S. pneumoniae''===