Yonsei Med J.  1975 Jun;16(1):44-49. 10.3349/ymj.1975.16.1.44.

Neisseria subflava Infections: Bacteriological aspects of two cases

• Chong Y
• Song KS
• Lee SY

• KMID: 687698
• DOI: http://doi.org/10.3349/ymj.1975.16.1.44

Abstract

Nonpathogenic Neisseria, normal inhabitants of the human nasopharynx, are known to cause occasional infections including such severe ones as septicemia, meningitis and endocarditis. Recently two strains of so called nonpathogenic. Neisseria, identified as N. subflava, were isolated from blood specimens of two different patients. One patient had meningitis, septicemia and subacute bacterial endocarditis while the other had septicemia. Pigment production by both of the strains was not definite and only a light yellow color was observed after prolonged incubation. However, the isolates showed bacteriological characteristics of N. subflava, namely gramnegative diplococci which were oxidase positive, acid production from fructose, glucose, maltose and sucrose but not from lactose or mannitol; and iodine reacting polysaccharide production from sucrose. One of the patients revealed serum agglutinin titers up to 1 : 640 against the isolate.

MeSH Terms

Adult
Case Report
Endocarditis, Subacute Bacterial/microbiology*
Female
Human
Male
Meningitis/microbiology*
Middle Age
Neisseria/isolation & purification*
Septicemia/microbiology*