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E. faecalis is usually resistant to many commonly used antimicrobial agents (aminoglycosides, aztreonam and quinolones). [15] The resistance is mediated by the presence of multiple genes related to drug resistance in the chromosome or plasmid. [3] Resistance to vancomycin in E. faecalis is becoming more common.
Enterococcus faecium is a Gram-positive, gamma-hemolytic or non-hemolytic bacterium in the genus Enterococcus. [1] It can be commensal (innocuous, coexisting organism) in the gastrointestinal tract of humans and animals, [ 2 ] but it may also be pathogenic , causing diseases such as neonatal meningitis or endocarditis .
Enterococcus is a large genus of lactic acid bacteria of the phylum Bacillota.Enterococci are Gram-positive cocci that often occur in pairs or short chains, and are difficult to distinguish from streptococci on physical characteristics alone. [2]
Streptolysin O is an oxygen-sensitive cytotoxin, secreted by most group A Streptococcus (GAS), and interacts with cholesterol in the membrane of eukaryotic cells (mainly red and white blood cells, macrophages, and platelets), and usually results in beta-hemolysis under the surface of blood agar. Streptolysin S is an oxygen-stable cytotoxin also ...
The classification assigns a letter code to each serotype. There are 20 described serotypes assigned the letters A to V (excluding E, I and J). [3] Bacteria of the genus Enterococcus, formerly known as group D streptococci, were classified as members of the genus Streptococcus until 1984 and are included in the original Lancefield grouping. [4]
ESKAPE is an acronym comprising the scientific names of six highly virulent and antibiotic resistant bacterial pathogens including: Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp. [1] The acronym is sometimes extended to ESKAPEE to include Escherichia coli. [2]
Enterococcus faecalis: General distribution Enterococcus faecium: General distribution Escherichia coli: General distribution Eubacterium spp Mouth, GI tract Faecalibacterium spp Large intestine, small intestine (Ileon) Flavobacterium spp Large intestine, small intestine (Ileon) Fusobacterium spp Mouth, GI tract Fusobacterium nucleatum: Mouth ...
Pseudocitrobacter faecalis Pseudocitrobacter anthropi Pseudocitrobacter is a genus of gram-negative , facultatively anaerobic , rob-shaped, non-homolytic, and oxidase -negative cells first found in stool samples from a Pakistani hospital.