Table 5.
Summary of resistance determinants for tetracyclines
|
Gene |
Clade distribution [N (%)] |
Overall |
|||||
|---|---|---|---|---|---|---|---|
|
C1 |
C2 |
C3 |
C4 |
C5 |
Cryptic |
||
|
tetM |
457 (6.8%) |
128 (6.6%) |
0 (0.0%) |
402 (72.2%) |
460 (54.3%) |
0 (0.0%) |
1447 (14.0%) |
|
Tn916 |
146 (2.2%) |
25 (1.3%) |
0 (0.0%) |
95 (17.1%) |
298 (35.2%) |
0 (0.0%) |
564 (5.5%) |
|
Tn5397 |
215 (3.2%) |
1 (0.1%) |
0 (0.0%) |
1 (0.2%) |
8 (0.9%) |
0 (0.0%) |
225 (2.2%) |
|
Tn6190 |
7 (0.1%) |
2 (0.1%) |
0 (0.0%) |
297 (53.3%) |
150 (17.7%) |
0 (0.0%) |
456 (4.4%) |
|
Tn6944 |
52 (0.8%) |
97 (5.0%) |
0 (0.0%) |
6 (1.1%) |
1 (0.1%) |
0 (0.0%) |
156 (1.5%) |
|
Unknown |
37 (0.6%) |
3 (0.2%) |
0 (0.0%) |
3 (0.5%) |
3 (0.4%) |
0 (0.0%) |
46 (0.4%) |
|
tet44 |
2 (<0.1 %) |
0 (0.0%) |
0 (0.0%) |
0 (0.0%) |
123 (14.5%) |
0 (0.0%) |
125 (1.2%) |
|
Tn6164 |
2 (<0.1 %) |
0 (0.0%) |
0 (0.0%) |
0 (0.0%) |
123 (14.5%) |
0 (0.0%) |
125 (1.2%) |
|
Other tet genes |
129 (1.9%) |
12 (0.6%) |
2 (0.8%) |
14 (2.5%) |
336 (39.7%) |
0 (0.0%) |
493 (4.8%) |