Moraxella catarrhalis(redirected from Micrococcus catarrhalis)
a bacterial species that causes upper respiratory tract infections, particularly in immunocompromised hosts; the type species of the genus Moraxella.
Synonym(s): Branhamella catarrhalis
Moraxella catarrhalisA fastidious, non-motile, gram-negative, aerobic diplococcus.
A species that is a frequent cause of upper and lower respiratory tract infections, including otitis media in children and bronchitis and pneumonia in the elderly. It is resistant to beta-lactam antibiotics such as most penicillins, but can be treated with many cephalosporins, macrolides, and sulfa drugs.
See also: Moraxella