A hybridoma derived from a mouse immunized with gonococcal outer membranes produced an antibody, designated H.8, that bound to all strains of Neisseria gonorrhoeae and N. meningitidis tested, and to N. lactamica and N. cinerea, but only rarely to other nonpathogenic Neisseria species. Studies with the gonococcal strain used in production of the antibody showed that the antibody bound to a surfa...

At a clinic in Indianapolis, Indiana, USA, we observed an increase in Neisseria gonorrhoeae-negative men with suspected gonococcal urethritis who had urethral cultures positive for N. meningitidis. We describe genomes of 2 of these N. meningitidis sequence type 11 complex urethritis isolates. Clinical evidence suggests these isolates may represent an emerging urethrotropic clade.

We have identified genes required for competence of Neisseria meningitidis, a naturally transformable human pathogen. Although not comprehensive, our analysis identified competence-defective mutants with transposon insertions in genes not previously implicated in this process in Neisseria.

The biochemical and serological characteristics of lactose-utilizing strains of Neisseria were determined. These organisms were found in the nasopharynx of man and grew well on Thayer-Martin Selective Medium. They were compared with N. meningitidis to ascertain whether they were variants of this species. Differences between the lactose-using strains and the recognized species of Neisseria were ...

In this article, we describe a case of bacteraemic pneumonia caused by Neisseria meningitidis serogroup Y.

vailable online 23 May 2009