TABLE 2.
Phylogenetic groups detected in E. coli strains isolated from fecal and blood samples
| E. coli isolate typea | No. (%) detected of each phylogenetic group |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Total no. | A | B1 | B2 | C | D | E | F | Clade I | Unknown | |
| Total E. coli isolates | 244 | 26 (10.6) | 22 (9) | 124 (50.8) | 3 (1.2) | 32 (13.1) | 15 (6.1) | 17 (6.9) | 4 (1.6) | 1 (0.41) |
| Fecal samples | 145 | 23 (15.9) | 11 (7.6) | 59 (40.7) | 3 (2.1) | 23 (15.9) | 8 (5.5) | 13 (8.9) | 4 (2.7) | 1 (0.7) |
| Susceptible | 71 | 16 (22.5) | 1 (1.4) | 24 (33.8) | 3 (4.2) | 10 (14.1) | 7 (9.9) | 9 (12.6) | 1 (1.4) | 0 |
| Resistant | 74 | 7 (9.5) | 10 (13.5) | 35 (47.3) | 0 | 13 (17.6) | 1 (1.3) | 4 (5.4) | 3 (4.1) | 1 (1.3) |
| Blood samples | 99 | 3 (3)b | 11 (11.1) | 65 (65.7)c | 0 | 9 (9.1) | 7 (7.1) | 4 (4) | 0 | 0 |
| Susceptible | 9 | 0 | 1 (11.1) | 6 (66.7) | 0 | 2 (22.2) | 0 | 0 | 0 | 0 |
| Resistant | 90 | 3 (3.4) | 10 (11.1) | 59 (65.5)d | 0 | 7 (7.8) | 7 (7.8) | 4 (4.4) | 0 | 0 |
a
Susceptible indicates susceptibility to all antimicrobials tested. Resistant indicates resistance to at least one of the antimicrobials tested.
b
Statistical differences (P = 0.002) between A phylogroup strains from fecal and blood samples.
c
Statistical differences (P < 0.001) between B2 phylogroup strains from fecal and blood samples.
d
Statistical differences (P < 0.001) between resistant B2 phylogroup strains from fecal and blood samples.