What family is Acinetobacter in?
What family is Acinetobacter in?
Moraxellaceae
Acinetobacter/Family
Pathogen name and classification Acinetobacter species are gram-negative, non-fermenting, often coccobacillary bacteria that belong in the family Moraxellaceae.
Is Acinetobacter A genus or species?
Acinetobacter
Acinetobacter baumannii/Genus
What type of organism is Acinetobacter?
Acinetobacter is a group of bacteria (germs) commonly found in the environment, like in soil and water. While there are many types, the most common cause of infections is Acinetobacter baumannii, which accounts for most Acinetobacter infections in humans.
What is the medical significance of Acinetobacter?
Acinetobacter is noted for its ability to survive for long periods on hospital surfaces and equipment, its predilection to develop resistance to multiple antibiotics, its affinity to cause serious infections in critically ill patients, and many well described outbreaks attributable to contamination of a common source.
What species are in Acinetobacter baumannii complex?
Initially, the Acinetobacter calcoaceticus–Acinetobacter baumannii complex (ACB complex) comprised four species: Acinetobacter calcoaceticus (genomic species 1), Acinetobacter baumannii (genomic species 2), Acinetobacter pittii (previously named as genomic species 3) and Acinetobacter nosocomialis (previously named as …
Is Acinetobacter a contaminant?
Acinetobacter outbreaks have also been traced to common-source contamination (particularly contaminated respiratory and ventilator equipment), and to cross-infection by the hands of health care workers caring for colonized or infected patients [17,29,30].
What are the characteristics of Acinetobacter?
Characteristics. Acinetobacters are short, plump rods, typically measuring 1.0–1.5 × 1.5–2.5 μm when in the logarithmic phase of growth, but they often become more coccoid in the stationary phase. They are Gram-negative but may appear Gram variable, as is typical of members of the Moraxellaceae generally.
What are the virulence factors of Acinetobacter baumannii?
baumannii, compared to virulence factors reported for other Gram-negative bacteria. These virulence factors, including efflux pumps, hemolytic factors, iron acquisition systems, lipopolysaccharides and OmpA, can induce host immune system responses or bacterial adherence to epithelial cells.
Is Acinetobacter a Esbl?
Background & objectives: Members of the genus Acinetobacter are an important cause of nosocomial infections and with widespread resistance to various antibiotics. Extended spectrum beta lactamase (ESBL) associated resistance among Acinetobacter species is now known.
Is Acinetobacter aerobic or anaerobic?
Acinetobacter baumannii is a Gram-negative bacillus that is aerobic, pleomorphic and non-motile. An opportunistic pathogen, A. baumannii has a high incidence among immunocompromised individuals, particularly those who have experienced a prolonged (> 90 d) hospital stay.
What is the clinical significance of Acinetobacter baumannii?
The most clinically significant pathogen is Acinetobacter baumannii because of the rapidity with which it develops antimicrobial resistance (including strains resistant to all commercially available antibiotics) and the ability of some strains to survive on the surfaces of hospital facilities and equipment for weeks.
What is Acinetobacter johnsonii?
Acinetobacter johnsonii and Acinetobacter lwoffi are the species most often isolated from foods, but other species, like the opportunistic pathogen Acinetobacter baumannii also can be found in spoilage flora.
How many species of Acinetobacter are there?
Forty-seven distinctive Acinetobacter species with valid names have been described and more species are identified each year [ 7, 8 ].
What is Acinetobacter calcoaceticus-baumannii (ACB)?
Acinetobacter calcoaceticus is also phenotypically close to the A. baumannii complex, and has therefore been grouped with these three species as A. calcoaceticus-baumannii (Acb) complex.
What is the morphology of Acinetobacter?
In the early growth phases, Acinetobacter species appear rod shaped. In the stationary phase, they acquire a coccobacillary morphology. There are now more than 30 different species in the genus Acinetobacter, and their classification and identification remain problematic for clinicians.
