TABLE 7.
Association between antimicrobial resistance genes and class 1 integron among the ExPEC strains isolated from humans
| Genetic marker | Association for the following antimicrobial resistance genes, class 1 integron, and virulence genesa:
|
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| blaTEM | blaSHV | catI | aac(3)-II | dhfrI | dhfrVII | sulI | sulII | tet(A) | tet(B) | tet(D) | |
| blaSHV | − | ||||||||||
| catI | − | − | |||||||||
| aac(3)-Ila | − | − | − | ||||||||
| dhfrI | − | − | − | − | |||||||
| dhfrVII | − | − | − | ++ | − | ||||||
| sulI | − | − | − | − | − | + | |||||
| sulII | +++ | − | − | − | − | − | − | ||||
| tet(A) | − | − | − | − | − | − | ++ | − | |||
| tet(B) | − | − | ++ | − | − | − | − | ++ | − | ||
| tet(D) | − | ++ | − | − | + | − | − | − | − | ||
| int1 | − | − | − | − | − | + | +++ | − | + | − | − |
a
Only antimicrobial resistance genes that exhibited an association with another gene at the P < 0.05 level are shown. The levels of significance of the association (as assessed by the chi-square exact test) were as follows: −, P > 0.05; +, 0.05 ≥ P ≥ 0.01; ++, 0.01 ≥ P ≥ 0.001; +++, 0.001 ≥ P.