Neisseria bergeri is a Gram-negative, oxidase-positive diplococcus in the family Neisseriaceae, recently described as a commensal species of the human upper respiratory tract. It was previously classified within Neisseria polysaccharea or related unnamed genomospecies before being resolved as a distinct taxon by whole-genome analyses. N. bergeri lacks the major virulence factors of pathogenic Neisseria species but shares extensive genetic exchange with other members of the genus through natural transformation.
Derived from 110 genomes. For the derivation pipeline and the PASS / WARN / FAIL verdict model, see the methods page for qualibact-v1.1.
QualiBact qualibact-v1.1 thresholds for Neisseria bergeri, refined from v1.0 based on the expert-feedback survey (Nov 2025).
Contamination upper bound pinned at 3.0% on the recommendation of the N. gonorrhoeae subgroup. The engine's automatic v1.0 derivation lands tighter than is appropriate for the broader commensal Neisseria distribution; 3.0% is the general threshold the expert group recommends across the commensal species.
All other thresholds inherit unchanged from v1.0. See the methods page for qualibact-v1.1 for the full pipeline.
This table summarises the distribution of each metric, including standard deviation, mean, median, and percentiles.
A combined summary table across all species is available on the summary page.
| Metric | Distribution | n | Mean | SD | Min | Q1 | Median | Q3 | Max |
|---|---|---|---|---|---|---|---|---|---|
| N50 | non-normal | 110 | 240,807 | 105,773 | 96,908 | 176,572 | 226,862 | 275,666 | 556,109 |
| no_of_contigs | non-normal | 110 | 44.4 | 19.4 | 10 | 34 | 44 | 50.75 | 91 |
| longest | non-normal | 110 | 551,783 | 221,359 | 198,134 | 365,237 | 590,482 | 759,858 | 1,018,560 |
| GC_Content | non-normal | 110 | 51.84 | 0.17 | 51.59 | 51.74 | 51.77 | 51.85 | 52.22 |
| Completeness_Specific | normal | 110 | 99.99 | 0.01 | 99.97 | 99.99 | 99.99 | 99.99 | 100 |
| Contamination | non-normal | 110 | 0.03 | 0.02 | 0.01 | 0.01 | 0.02 | 0.03 | 0.11 |
| Total_Coding_Sequences | normal | 110 | 1,987 | 69.37 | 1,860 | 1,967 | 1,984 | 2,032 | 2,194 |
| Genome_Size | normal | 110 | 2,104,207 | 54,826 | 1,998,115 | 2,097,506 | 2,112,509 | 2,132,003 | 2,250,623 |
Full statistics including KS test vs RefSeq and Wasserstein distance are in the downloadable summary.csv.
Derived from 110 genomes
Both Fail and Warn bands shown as the published rounded values — easier to cite and consistent across the species page, CSV downloads, and downstream QC tools.
| Metric | Fail below | Warn below | Warn above | Fail above |
|---|---|---|---|---|
| Genome_Size | - | - | - | - |
| GC_Content | - | - | - | - |
| Total_Coding_Sequences | - | - | - | - |
| Completeness_Specific | - | - | - | - |
| Contamination | - | - | - | - |
| N50 | - | - | - | - |
| no_of_contigs | - | - | - | - |
| longest | - | - | - | - |
How to read this: A value outside a failure limit fails QC. Within the failure limits, values beyond a warning limit are borderline and worth a manual look; values within the warning limits pass that criterion. A dash means that no bound is defined on that side.