What is Moraxella spp?
Moraxella spp. are Gram-negative diplococci that morphologically and phenotypically resemble Neisseria spp. They are strictly aerobic, oxidase-positive, catalase-positive, DNAse-positive and asaccharolytic.
What causes Moraxella?
Moraxella catarrhalis is a bacterium that causes infection by sticking to a host cell. It does this using special proteins called adhesins that are on its outer membrane. Doctors usually treat M. catarrhalis infections with antibiotics, but this is becoming increasingly challenging due to antibiotic resistance.
Where is Moraxella found in the body?
Moraxella organisms are Gram-negative cocci in the family Neisseriaceae. They were previously known as diplococcus of Morax-Axenfeld. Moraxellae are normal inhabitants of the upper respiratory tract and are also found on the skin and in the urogenital tract.
Is Moraxella catarrhalis serious?
While M. catarrhalis can be responsible for mild sinus and ear infections in children, it can be much more dangerous in people with a compromised immune system. M. catarrhalis usually stays in the respiratory tracts of adults who have illnesses like cystic fibrosis or an autoimmune disease.
What causes Moraxella Osloensis?
The genus Moraxella consists of aerobic, oxidase-positive, and Gram-negative coccobacilli. Moraxella osloensis has been isolated from environmental sources in hospitals and from the normal human respiratory tract,1 and has been reported as a rare causative pathogen of infections in humans.
Is Moraxella gram-positive?
Members of the genus Moraxella are Gram-negative, aerobic, asaccharolytic bacteria that can be pleomorphic, resistant to Gram-stain decolorization, and occur predominantly in pairs or short chains.
What infection does Moraxella catarrhalis cause?
M. catarrhalis is increasingly recognized as a common cause of acute otitis media, also known as a middle ear infection, in children. Many young children have this bacteria in their noses, and it can sometimes move into the middle ear, causing infection.
How is Moraxella Osloensis treated?
osloensis. Due to the low number of cases, there are no guidelines of treatment, however, M. osloensis is usually susceptible to penicillin G, cephalosporins, and aminoglycosides,. Our patient was treated successfully with surgical debridement and intravenous third-generation cephalosporins alone.
How do you get Moraxella Osloensis?
What is Moraxella in microbiology?
Moraxella. It is named after the Swiss ophthalmologist Victor Morax. The organisms are short rods, coccobacilli, or as in the case of Moraxella catarrhalis, diplococci in morphology, with asaccharolytic, oxidase -positive, and catalase -positive properties. M. catarrhalis is the clinically most important species under this genus.
Is Moraxella catarrhalis Gram positive or negative?
Moraxella spp. are Gram-negative diplococci that morphologically and phenotypically resemble Neisseria spp. They are strictly aerobic, oxidase-positive, catalase-positive, DNAse-positive and asaccharolytic. Moraxella catarrhalis is now recognized as an important cause of upper and lower respiratory tract infections in children and adults.
What is Moraxella bovis?
Moraxella bovis is the cause of infectious bovine keratoconjunctivitis, known colloquially in the United Kingdom as New Forest eye.
Does Moraxella atlantae cause bacteremia?
Moraxella atlantae can cause bacteremia in immunocompromised patients. Moraxella spp. are Gram-negative diplococci that morphologically and phenotypically resemble Neisseria spp. They are strictly aerobic, oxidase-positive, catalase-positive, DNAse-positive and asaccharolytic.