NCIt definition : A species of facultatively anaerobic, Gram positive, cocci shaped bacteria in the
phylum Firmicutes. This species is positive for esculin hydrolysis, alpha galactosidase
and Lancefield group D and negative for catalase, arginine deaminase, growth in 6.5%
NaCl, pyrrolidonylarylamidase and urease. It can ferment melibiose, lactose and sucrose
but not mannitol, sorbitol, inulin or trehalose. S infantarius has been isolated from
infants and is a human pathogen that can cause hepatobiliary bacteremia.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Streptococcus infantarius.;