2010•Infectious Diseases in Clinical PracticeRequires access

Infective Endocarditis Due to Neisseria elongata

Amit Noheria, Peter W. Anderson, Gino Guillermo Tapia-Zegarra, Larry M. Baddour, Walter R. Wilson

Abstract

We present 2 cases of prosthetic valve endocarditis due to Neisseria elongata subspecies nitroreducens and elongata. Neisseria elongata is a fastidious, immotile, oxidase-positive, gram-negative bacillus found in the human oropharyngeal flora that is a rare cause of infective endocarditis. It is distinguished from Kingella kingae, Eikenella corrodens, and other organisms based on extended biochemical testing and 16S recombinant DNA sequencing. We review the literature on N. elongata endocarditis and highlight the similarities between N. elongata and HACEK organisms regarding their biochemical profiles and clinical features of infective endocarditis.

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Key concepts: Eikenella corrodens, Fastidious organism, Microbiology, Kingella kingae, Medicine, Endocarditis, Infective endocarditis, Neisseria