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Bacteremia Caused by Neisseria elongata in an Infective Endocarditis Patient: Case Report and Review of Literature

Chen, Y.; Liu, X.; Ai, L.; Guo, P.; Huang, H.

Clinical laboratory 66(1)

2020


ISSN/ISBN: 1433-6510
PMID: 32013366
Accession: 069777006

Neisseria elongata (N. elongate) is a strictly aerobic and gram-negative rod bacterium which is a constituent of the commensal bacterial flora in the pharynx. Infection caused by Neisseria elongata is rarely reported. Here we describe a case of endocarditis in a patient after aortic mechanical valve replacement caused by N. elon-gate in China. A 30-year-old man suffered infective endocarditis after aortic mechanical valve replacement. Blood cultures were positive and the organism was identified as Neisseria elongata by MALDI-TOF MS as well as the 16S rRNA sequencing. The patient was treated with ofloxacin and meropenem. He was successfully treated with the 6-week course of antibiotic therapy. N. elongate endocarditis is rarely reported. Our report expands the range of infection caused by N. elongate.

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