Table 1 Distribution of virulence-related genes and antibiotic resistance genes in O25 and O16 serogroup
Variable | O serotype/ n(%) | p-value | ||
|---|---|---|---|---|
O25 (n = 20; %) | O16 (n = 4; %) | |||
Miscellaneous | pai | 15 (75) | 1 (25) | 0.058 |
Adhesions | sfa | 9 (45) | 3(75) | 0.284 |
pap G I | 5 (25) | 2 (50) | 0.326 | |
pap G II | 0 | 0 | 1.000 | |
pap G III | 5 (25) | 2 (50) | 0.326 | |
afa | 2 (10) | 0 | 0.518 | |
fimH | 20 (100) | 4 (100) | 1.000 | |
Toxins | hyl A | 1 (5) | 1 (25) | 0.196 |
cnf | 0 | 0 | 1.000 | |
Siderophores | iutA | 12 (60) | 2 (50) | 0.717 |
Phylogenetic groups | B2 | 13 (65) | 1 (25) | 0.147 |
D | 0 | 1 (25) | 0.025 | |
A | 3 (15) | 0 | 0.418 | |
B1 | 1 (5) | 2 (50) | 0.015 | |
C | 1 (5) | 0 | 0.655 | |
E | 0 | 0 | 1.000 | |
F | 0 | 0 | 1.000 | |
Unknown | 2 (10) | 0 | 0.518 | |
Antibiotic resistance genes | Oxa-48 | 1 (5) | 0 | 0.655 |
blaCTX−M | 11 (55) | 0 | 0.049 | |
blaTEM | 8 (40) | 2 (50) | 0.717 | |
blaSHV | 0 | 0 | 1.000 | |
qnrA | 0 | 0 | 1.000 | |
qnrB | 8 (40) | 0 | 0.129 | |
qnrS | 7 (35) | 0 | 0.169 | |
Int1 | 18 (90) | 0 | < 0.001 | |
Int2 | 3 (15) | 1 (25) | 0.632 | |
acrA | 17 (85) | 3 (75) | 0.632 | |
acrB | 20 (100) | 4 (100) | 1.000 | |
tolC | 19 (95) | 4 (100) | 0.655 | |
ESBL | 6 (30) | 1 (25) | 0.844 | |