What is Moraxella spp?

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 disease does Moraxella Lacunata cause?

Moraxella bovis causes infectious bovine keratoconjunctivitis, known as pinkeye, in cattle and has been found in the nasal passages of cattle [6, 22]. Moraxella lacunata can cause conjunctivitis, keratitis, endocarditis, and otolaryngitis in humans [5, 9, 13, 23], but is rarely found in animal cases [7, 24].

Is Moraxella a rod or cocci?

Moraxella species are Gram negative rods or cocci, but often with a tendency to resist decolourisation. The rods are often very short and plump, approaching a coccus shape 1.0 – 1.5 x 1.5 – 2.5µm. Cells usually occur in pairs or short chains with one plane of division.

Is Catarrhalis gram-positive?

M. catarrhalis is unique among gram-negative diplococci; strains of M. catarrhalis produce no reaction in enzyme substrate tests.

How do you treat Moraxella catarrhalis?

Amoxicillin-clavulanate, second- and third-generation oral cephalosporins, and trimethoprim-sulfamethoxazole (TMP-SMZ) are the most recommended agents. Alternatively, azithromycin or clarithromycin can be used. More than 90% of M catarrhalis strains have been shown to resist amoxicillin, and these rates vary by region.

Does Moraxella catarrhalis cause pneumonia?

M catarrhalis causes bronchitis and pneumonia in children and adults with underlying chronic lung disease and is occasionally a cause of bacteremia and meningitis, especially in immunocompromised persons. Bacteremia can be complicated by local infections, such as osteomyelitis or septic arthritis.

Is Moraxella catarrhalis viral or bacterial?

What is Moraxella catarrhalis? Moraxella catarrhalis (M. catarrhalis) is a type of bacteria that’s also known as Neisseria catarrhalis and Branhamella catarrhalis. It used to be considered a normal part of the human respiratory system, but more recent research shows that can it sometimes causes infections.