Pathogenicity of Virulent Species of Group C Streptococci in Human

Table 1

Phenotypic characteristics of group C streptococci.

Species	Lancefield group	β-hemolysis	PYR test			Origin	References
S. dysgalactiae subs. dysgalactiae	C	−	−	v	+	Animals	[11]
S. dysgalactiae subs. equisimilis	A, C, G	+	−	−	+	Human, animals	[2, 5, 7, 10–12, 14]
S. equi subs. equi	C	+	−	−	−	Animals	[11]
S. equi subs. zooepidemicus	C	+	−	+	v	Human, animals, unpasteurized dairy products	[2, 11]
S. constellatus subs. pharyngis	C	+	−	−	+	Human	[11]

fermentation.
fermentation.
−, negative reaction; +, positive reaction; v, variable reaction.