A gram-negative saprophytic bacterium found normally in the nasopharynx, mouth and upper respiratory tracts in humans.
Neisseria flavescens has been found in the epidemic outbreak of meningitis and as a hybrid organism characterized both commensal and pathogenic species. It is pigmented and produce polysaccharide from sucrose which is vulnerable to colistin. It is among the commensal flora of human respiratory tract that rarely cause infections.
Neisseria flavescens has been an uncommon pathogen in human infections like empyema and pneumonia. Infection from this bacterium manifested with sticky pus, high fever and aggravating dyspnea. It is chromogenic and normally non-pathogenic.
Neisseria flavescens rarely implicated in pulmonary infection, meningitis and as causative agent of endocarditis.
Species: Neisseria flavescens