TABLE 5.
Association of feature with clonal subset and with temporal trend within the subset among 128 archival ST131 Escherichia coli isolates (1968 to 2011)
| Parameter or feature | Relative score or prevalence or level of feature within clonal subset, temporal trend |
Temporal trend overall | ||
|---|---|---|---|---|
| Non-H30 (n = 62) | H30 (non-Rx) (n = 17) | H30-Rx (n = 49) | ||
| Virulence score | Highest (median, 12), stable | Lowest (median, 10), stable | Medium (median, 11), stable | None |
| ExPECa | Medium, rising | Low, stable | High, stable | Rising |
| Virotype A | None | Low, stable | High, stable | Rising |
| Virotype C | None | High, stable | Low, stable | Rising |
| Virotype D | Medium, stable | None | None | Falling |
| EAECb | Low, stable | None | None | Falling |
| Capsular antigen K100 | None | None | High, stable | Rising |
| Capsular antigen K2 | Low | None | Low | Stable |
| Capsular antigen K5 | Low | Medium | Low | Stable |
| Capsular antigen K16 | Low | None | None | Falling |
| Resistance score | Medium, stable | High, stable | High, stable | Rising |
| ESBLc | Low, rising | Medium, stable | High, stable | Rising |
| Biofilm production | Low, stable | None | None | Falling |
a
ExPEC, extraintestinal pathogenic E. coli.
b
EAEC, (diarrheagenic) enteroaggregative E. coli.
c
ESBL, extended-spectrum-beta-lactamase production.