TABLE 6.

Distribution within virulence profile-based tree of 325 Escherichia coli isolates from uninfected women and women with acute cystitis or pyelonephritis

Cluster or subclusteraNo. of isolates (% of total) (n = 329)aNo. (%) of isolates of cluster or subcluster
Fecal (76 [23%] of 329)Cystitis (83 [25%] of 329)Pyelonephritis (166 [50%] of 329)a
I175 (53)28 (16)b35 (20)c112 (64)d
    Ia114 (35)17 (15)d20 (18)77 (68)d
    Ib61 (19)11 (18)15 (25)c35 (57)
II150 (46)48 (32)b48 (32)c54 (36)d
    IIa80 (24)19 (24)21 (26)40 (50)
    IIb70 (21)29 (41)d27 (39)c14 (20)d
  • a In the virulence profile-based dendrogram, 4 additional pyelonephritis isolates were placed outside the 2 main clusters (and 4 main subclusters).

  • b P = 0.002, for prevalence of source group within indicated cluster or subcluster versus the rest of the population.

  • c P ≤ 0.03, for prevalence of source group within indicated cluster or subcluster versus the rest of the population.

  • d P ≤ 0.001, for prevalence of source group within indicated cluster or subcluster versus the rest of the population.