Yersinia enterocolitica
Most common cause of human yersiniosis. Highly heterogeneous; subdivided into biotypes and serotypes, with a dedicated cgMLST scheme for surveillance.
Yersinia enterocolitica is the most frequent cause of human yersiniosis in Europe, acquired chiefly from pork, and produces enterocolitis, mesenteric adenitis and a range of post-infectious manifestations.
The species is markedly heterogeneous — far more so than Y. pestis — and is subdivided into biotypes (1A, 1B, 2 to 5) and serotypes whose pathogenic potential differs substantially: biotype 1A is generally regarded as non-pathogenic, biotype 1B as highly pathogenic. This internal diversity is why the species has its own dedicated cgMLST scheme of 1727 loci at BIGSdb-Pasteur, used for national surveillance in France, rather than being typed with the genus-wide scheme.
Plasmid content
Copy number is a per-genome measurement, never a species constant.
| Replicon | present | partial | absent | not measured |
|---|---|---|---|---|
chromosome |
0 | 0 | 2 | 0 |
pMT1 |
0 | 0 | 2 | 0 |
pCD1 |
0 | 2 | 0 | 0 |
pPCP1 |
0 | 0 | 2 | 0 |
Defining markers
cgMLST is the reference typing method for the genus (BIGSdb-Pasteur). SNP branch nomenclature applies to Y. pestis alone, which is a monomorphic clone.
| Type | Code | Source |
|---|---|---|
| cgMLST | Species-specific cgMLST scheme (1727 loci), BIGSdb-Pasteur | Savin et al. 2019 / BIGSdb-Pasteur Yersinia; used for French national surveillance |
| plasmid | pYV (virulence plasmid, present in pathogenic biotypes) | Portnoy & Falkow 1981, J Bacteriol |
Typing equivalences
Three cgMLST schemes coexist for the genus and have never been compared in the literature. They are shown side by side; this atlas does not arbitrate between them.
| System | Code | Match |
|---|---|---|
| bigsdb | Y. enterocolitica cgMLST (1727 loci) | exact |
| ncbi | txid630 | exact |
Genomes (2)
| Accession | Strain | Country | Collection year | Assembly level |
|---|---|---|---|---|
GCF_000009345.1 |
8081 | — | — | Complete Genome |
GCF_000253175.1 |
Y11 | — | — | Complete Genome |