NCIt definition : A species of facultatively anaerobic, Gram positive, cocci shaped bacteria in the
phylum Firmicutes. This species is positive for Lancefield group C, beta hemolysis
and arginine deaminase, negative for catalase and can ferment sorbitol. S. equi can
be isolated from many animals and is a pathogen that causes equine distemper and human
nephritis.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Streptococcus equi.;