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Streptococcus equinus is a Gram-positive, nonhemolytic, nonpathogenic, lactic acid bacterium of the genus Streptococcus. [5] It is the principal Streptococcus found in the alimentary canal of a horse, [6] and makes up the majority of the bacterial flora in horse feces. [7] Equivalence with Streptococcus bovis has been contested. [4]
For example, Streptococcus faecalis is now Enterococcus faecalis. E. faecalis is sometimes alpha-hemolytic and E. faecium is sometimes beta hemolytic. [23] The remaining nonenterococcal group D strains include Streptococcus gallolyticus, Streptococcus bovis, Streptococcus equinus and Streptococcus suis. Nonhemolytic streptococci rarely cause ...
Streptococcus equinus Andrewes and Horder 1906 Streptococcus bovis is a group of strains of Gram-positive bacteria , originally described as a species, [ 5 ] [ 6 ] that in humans is associated with urinary tract infections, endocarditis , sepsis , [ 7 ] and colorectal cancer . [ 8 ]
Similarly, group B streptococcus typically denotes Streptococcus agalactiae, although minor beta-hemolytic group B streptococci like S. troglodytidis exist. [15] While most streptococcal illnesses in humans originate from species adapted to humans, such as S. pneumoniae or S. pyogenes, there are zoonotic species capable of causing infections. [15]
Streptococcus zooepidemicus is a Lancefield group C streptococcus that was first isolated in 1934 by P. R. Edwards, and named Animal pyogens A. [1] It is a mucosal commensal and opportunistic pathogen that infects several animals and humans, but most commonly isolated from the uterus of mares.
The system, created by Rebecca Lancefield, was historically used to organize the various members of the family Streptococcaceae, which includes the genera Lactococcus and Streptococcus, but now is largely superfluous due to explosive growth in the number of streptococcal species identified since the 1970s. [2]
Group A streptococcal infections are a number of infections with Streptococcus pyogenes, a group A streptococcus (GAS). [1] S. pyogenes is a species of beta-hemolytic Gram-positive bacteria that is responsible for a wide range of infections that are mostly common and fairly mild. If the bacteria enters the bloodstream, the infection can become ...
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