ABSTRACT
Neisseria elongata is a normal group of bacteria in human oropharynx and a kind of gram-negative bacillus that cause disease, and its pathogenicity is rarely reported in China. In a few cases, it can cause septicemia, osteomyelitis and infective endocarditis. There are a few reports of other Neisseria causing peritonitis at home and abroad. The paper reported a case of Neisseria elongata-caused peritonitis and reviewed the literature. The patient was initially treated with ceftazidime combined with cefzolin overnight for 3 days, but the effect was not good. The subsequent peritoneal dialysis fluid culture results indicated Neisseria elongata, and the patient was cured and discharged after treatment with levofloxacin combined with drug sensitivity test, hoping to attract clinical workers' attention to the pathogenicity of Neisseria.
ABSTRACT
Infective endocarditis due to Neisseria elongata subsp. nitroreducens occurs infrequently. In this report, we describe a case of infective endocarditis caused by N. elongata subsp. nitroreducens in a patient with a prosthetic heart valve. A 55-year-old woman presented with complaints of fever and headache that she had been experiencing over the course of 4 weeks. Transesophageal echocardiography showed vegetation on the prosthetic mitral valve. A blood culture isolate was confirmed as N. elongata subsp. nitroreducens using biochemical characterization and DNA sequencing of 16S rRNA. The clinical manifestations improved with medical treatment.