Table 2.
Frequencies of antimicrobial resistance genes identified using whole-genome sequencing data of Salmonella Heidelberg isolates collected from poultry and human sources, Ontario, Canada 2013
|
Antimicrobial group |
Resistance gene |
Accession no.* |
Count |
(% of 430) |
|---|---|---|---|---|
|
Aminoglycoside |
aac(3)-IId |
7 |
(1.6 %) |
|
|
aac(3)-VIa |
20 |
(4.7 %) |
||
|
aac(6')-Ib-cr† |
3 |
(0.7 %) |
||
|
aac(6')-Ib3 |
3 |
(0.7 %) |
||
|
aadA1 |
9 |
(2.1 %) |
||
|
aadA2 |
3 |
(0.7 %) |
||
|
ant(3'')-Ia |
28 |
(6.5 %) |
||
|
aph(3')-Ia |
2 |
(0.5 %) |
||
|
aph(3'')-Ib |
10 |
(2.3 %) |
||
|
aph(6)-Id |
12 |
(2.8 %) |
||
|
grdA |
2 |
(0.5 %) |
||
|
Beta-lactam |
blaCMY-2 |
156 |
(36.3 %) |
|
|
blaTEM-1A |
5 |
(1.2 %) |
||
|
blaTEM-1B |
12 |
(2.8 %) |
||
|
blaTEM-214 |
1 |
(0.2 %) |
||
|
Colistin |
mcr-9 |
3 |
(0.7 %) |
|
|
Folate pathway inhibitors |
dfrA1 |
1 |
(0.2 %) |
|
|
dfrA12 |
3 |
(0.7 %) |
||
|
dfrA14 |
1 |
(0.2 %) |
||
|
dfrA15 |
1 |
(0.2 %) |
||
|
dfrA8 |
1 |
(0.2 %) |
||
|
sul1 |
25 |
(5.8 %) |
||
|
sul2 |
5 |
(1.2 %) |
||
|
sul3 |
4 |
(0.9 %) |
||
|
Oxidative stress |
sitABCD |
5 |
(1.2 %) |
|
|
Phenicol |
floR |
1 |
(0.2 %) |
|
|
cmlA1 |
3 |
(0.7 %) |
||
|
Fosfomycin |
fosA7 |
423 |
(98.4 %) |
|
|
Tetracycline |
tet(A) |
20 |
(4.7 %) |
|
|
tet(B) |
6 |
(1.4 %) |
||
|
tet(M) |
1 |
(0.2 %) |
*Accession values provided as part of Resfinder database, 17 Mar 2022.
†This gene may also confer fluoroquinolone resistance.