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Bacilli usually have a rod or cylinder shape. Examples include Listeria, Salmonella typhimurium, Yersinia enterocolitica, and Escherichia coli. Yersinia enterocolitica colonies growing on XLD agar plates Escherichia coli Color-enhanced scanning electron micrograph showing Salmonella typhimurium (red) invading cultured human cells
Enterobacteriaceae is a large family of Gram-negative bacteria. It includes over 30 genera and more than 100 species. It includes over 30 genera and more than 100 species. Its classification above the level of family is still a subject of debate, but one classification places it in the order Enterobacterales of the class Gammaproteobacteria in ...
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.
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 ]
Medically-relevant gram-negative diplococci include the four types that cause a sexually transmitted disease (Neisseria gonorrhoeae [20]), a meningitis (Neisseria meningitidis [21]), and respiratory symptoms (Moraxella catarrhalis, [22] A coccobacillus Haemophilus influenzae is another medically relevant coccal type.
Escherichia (/ ˌ ɛ ʃ ə ˈ r ɪ k i ə / ESH-ə-RIK-ee-ə) is a genus of Gram-negative, non-spore-forming, facultatively anaerobic, rod-shaped bacteria from the family Enterobacteriaceae. [3] In those species which are inhabitants of the gastrointestinal tracts of warm-blooded animals, Escherichia species provide a portion of the microbially ...
This article focuses on the bacteria that are pathogenic to humans. Most species of bacteria are harmless and many are beneficial but others can cause infectious diseases. The number of these pathogenic species in humans is estimated to be fewer than a hundred. [2]
Calymmatobacterium granulomatis; Campylobacter. Campylobacter coli; Campylobacter fetus; Campylobacter jejuni; Campylobacter pylori; Capnocytophaga canimorsus