Moraxella catarrhalis is typically a commensal organism in the human respiratory tract but can act as a pathogen under certain conditions. It is a major cause of otitis media (middle ear infection) in children and contributes to lower respiratory tract infections in adults (Goldstein et al., 2009, Karalus & Campagnari 2000)
Goldstein et al., (2009). Moraxella catarrhalis, a human respiratory tract pathogen. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 49(1), 124–131.
Karalus, R., & Campagnari, A. (2000). Moraxella catarrhalis: a review of an important human mucosal pathogen. Microbes and infection, 2(5), 547–559.
