Mycobacterium is a genus of over 190 species in the phylum Actinomycetota, assigned its own family, Mycobacteriaceae. This genus includes pathogens known to cause serious diseases in mammals, including tuberculosis and leprosy in humans. The Greek prefix myco- means 'fungus', alluding to this genus' mold-like colony surfaces. Since this genus has cell walls with Gram-positive and Gram-negative features, acid-fast staining is used to emphasize their resistance to acids, compared to other cell types.
Mycobacterium xenopi is a slow-growing scotochromogenic species of Mycobacterium. It was first reported by Schwabacher in 1959, having been isolated in lesions found on a Xenopus laevis, but the possibility of human infection was not confirmed until 1965. It has been cultured from hot and cold water taps, hospital hot water generators and storage tanks, and other environmental sources.
The International Code of Nomenclature of Prokaryotes (ICNP) formerly the International Code of Nomenclature of Bacteria (ICNB) or Bacteriological Code (BC) governs the scientific names for Bacteria and Archaea. It denotes the rules for naming taxa of bacteria, according to their relative rank. As such it is one of the nomenclature codes of biology.
Mycobacteroides abscessus is a species of rapidly growing, multidrug-resistant, nontuberculous mycobacteria that is a common soil and water contaminant. Although M. abscessus most commonly causes chronic lung infection and skin and soft tissue infection (SSTI), it can also cause infection in almost all human organs, mostly in patients with suppressed immune systems. Amongst NTM species responsible for disease, infection caused by M. abscessus complex are more difficult to treat due to antimicrobial drug resistance.
Mycobacterium africanum is a species of Mycobacterium that is most commonly found in West African countries, where it is estimated to cause up to 40% of pulmonary tuberculosis. The symptoms of infection resemble those of M. tuberculosis.
Mycobacterium asiaticum is a slowly growing photochromogenic mycobacterium first isolated from monkeys in 1965. M. asiaticum can, but rarely, causes human pulmonary disease.
Mycolicibacterium aurum is a species of the phylum Actinomycetota, belonging to the genus Mycolicibacterium.
Mycobacterium celatum is a species of the phylum Actinomycetota, belonging to the genus Mycobacterium.
Mycobacterium chitae is a species of the phylum Actinomycetota, belonging to the genus Mycobacterium.
Mycobacterium haemophilum is a species of the phylum Actinomycetota, belonging to the genus Mycobacterium.
Mycobacterium hassiacum is a rapid-growing thermophilic mycobacterium that was isolated in human urine in 1997 by researchers at the German University of Regensburg. It's a species of the phylum Actinomycetota, belonging to the genus Mycobacterium.
Mycobacteroides immunogenum is a species of bacteria from the phylum Actinomycetota, belonging to the genus Mycobacteroides.
Mycobacterium malmoense is a Gram-positive bacterium from the genus Mycobacterium.
Mycolicibacter nonchromogenicus is an infectious species of bacteria.
Mycolicibacillus trivialis is a species of Mycolicibacillus. It is known to cause relapsing peritonitis.
Mycolicibacter terrae is a slow-growing species of mycobacteria. It is an ungrouped member of the third Runyon. It is known to cause serious skin infections, which are "relatively resistant to antibiotic therapy".
Mycobacterium novocastrense is a species of Mycobacterium.
Afipia birgiae is a species in the Afipia bacterial genus. It is a gram-negative, oxidase-positive rod in the alpha-2 subgroup of the class Proteobacteria. It is motile by means of a single flagellum. Its type strain is 34632T.
Helicobacter acinonychis is a bacterium in the Helicobacteraceae family, Campylobacterales order. It was first isolated from cheetahs with gastritis, so has been associated with this disease in this particular species and others of its kind. It is Gram-negative, spiral-shaped, and grows under microaerophilic conditions. The type strain is 90-119.
Mycobacterium stephanolepidis is an acid fast, rod-shaped bacteria that can form either round or smooth colonies, without pigmentation. The species name is derived from the fish that it was first discovered for infecting, Stephanolepis cirrhifer. This species grows on Middlebrook 7H11 agar or egg slants after being incubated for 3–5 days at 30 °C. Mycobacterium stephanolepidis has catalase activity and urease activity, intermediate for iron uptake. The organism fails to show Tween 80 hydrolysis, nitrate reduction, or arylsulfatase activity. It does not gro on Middlebrook 7H11 agar with picric acid. It has very little growth with 5% salt." M. stephanolepidis is "susceptible to clarithromycin, doxycycline, and ciprofloxacin." It displays either intermediate and/or resistant to the anitbiotics rifampicin, streptomycin, kanamycin and amikacin.
