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Members of the Enterobacteriaceae are bacilli (rod-shaped), and are typically 1–5 μm in length. They typically appear as medium to large-sized grey colonies on blood agar, although some can express pigments. Most have many flagella used to move about, but a few genera are nonmotile.
As a member of the Enterobacteriaceae family, it is Gram-negative, rod-shaped, and non-spore-forming. C. rodentium contains a conserved pathogenicity island in its genome, the locus of enterocyte effacement (LEE). [ 2 ]
Klebsiella aerogenes, [2] previously known as Enterobacter aerogenes, is a Gram-negative, oxidase-negative, catalase-positive, citrate-positive, indole-negative, rod-shaped bacterium. [3] Capable of motility via peritrichous flagella, [4] it is approximately one to three microns in length.
Klebsiella is a genus of Gram-negative, oxidase-negative, rod-shaped bacteria with a prominent polysaccharide-based capsule. [3] Klebsiella is named after German-Swiss microbiologist Edwin Klebs (1834–1913). Carl Friedlander described Klebsiella bacillus which is why it was termed Friedlander bacillus for many years.
Salmonella is a genus of rod-shaped, (bacillus) gram-negative bacteria of the family Enterobacteriaceae. The two known species of Salmonella are Salmonella enterica and Salmonella bongori . S. enterica is the type species and is further divided into six subspecies [ 2 ] [ 3 ] that include over 2,650 serotypes . [ 4 ]
Citrobacter is a genus of Gram-negative, aerobic, rod-shaped [2] coliform bacteria of the Enterobacteriaceae family. Citrobacter spp. cause opportunistic infections (including urinary tract infections, gastroenteritis, and bacteremia). [2]
Enterobacter is a genus of common Gram-negative, facultatively anaerobic, rod-shaped, non-spore-forming bacteria of the family Enterobacteriaceae. Cultures are found in soil, water, sewage, feces and gut environments. It is the type genus of the order Enterobacterales. [1]
Serratia is a genus of Gram-negative, facultatively anaerobic, rod-shaped bacteria of the family Enterobacteriaceae. [5] They are typically 1–5 μm in length, do not produce spores, [6] and can be found in water, soil, plants, and animals. [7]