Moraxella

Moraxella is a genus of gram-negative bacteria in the family Moraxellaceae. 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.
Roles in disease.
The organisms are commensals of mucosal surfaces and sometimes give rise to opportunistic infection.