The earliest reports of non-gonococcal, commensal Neisseria spp. present in the genital tract include N. catarrhalis (M. catarrhalis) [148,180,240,241,242], N. flavescens , N. lactamica [155,156], N. sicca [148,180,181], and N. subflava [148,180,188].

In summary, we identified seven postmarketing cases of serious disease caused by typically commensal Neisseria spp., including N. cinerea, N. flavescens (subflava), N. mucosa, N. sicca (mucosa), and N. sicca (mucosa)/subflava.

Colonies of N. subflava and N. sicca are opaque and have varying consistency. Neisseria sicca adhere to the agar surface and become wrinkled with prolonged incubation. Some nonpathogenic Neisseria spp. form a yellow pigment (N. flavescens) or …

We have demonstrated that not only N. gonorrhoeae, but also N. sicca induce the secretion of pro-inflammatory cytokines IL-6, TNF-α, and chemokines CXCL8 and CCL20 by infected epithelial cells. However, N. sicca triggers a lesser effect than does N. gonorrhoeae.

Of the unknown Neisseria species observed in 13 patients, 5 were named Diplococcus mucosus and one was potentially D. mucosus, a now defunct term which does not directly translate into any modern species definition. 6 of the organisms identified between 2004 and 2019 were described as N. sicca / N. subflava, which are two separate species (now ...

Acute pneumonia caused by species of Neisseriaceae are uncommon. Most of the reported cases are due to Neisseria meningitidis group Y 1 and Branhamella catarrhalis2 (formerly known as Neisseria catarrhalis). This report describes the first case due to Neisseria sicca.

Background—Non-meningococcal, non-gonococcal Neisseria spp. are typically commensal and rarely cause invasive disease. Eculizumab is a terminal complement inhibitor that increases susceptibility to meningococcal disease, but data on disease caused by typically-commensal Neisseria spp. are lacking.

Our search identified seven cases of disease from typically commensal Neisseria spp. in eculizumab recipients. These findings suggest that any Neisseria spp. identified from a normally sterile site in an eculizumab recipient could represent true infection warranting prompt treatment.

Neisseria meningitidis from various serogroups and two commensal neisseriae (N. sicca and N. perflava) were isolated from 15 patients at various stages of human immunodeficiency virus infection in this clinical and bacteriological study.

Neisseria spp. are a transient low abundance member of the human microbiome. This species contains the very. Abstract. well described pathogens, Neisseria gonorrhoeae and N. meningitidis.