Number of isolates | Group | Tetracycline resistance genes | MIC50* (mg/L) | Range of MIC (mg/L) | p-values# |
---|---|---|---|---|---|
5 | 1 | tet(M), tet(O) and tet(L) or tet(M) and tet(L) | 64 | 64 - 256 | 0.01 (group 1 vs. 2) |
 |  |  |  |  | <0.001 (group 1 vs. 3) |
 |  |  |  |  | 0.002 (group 1 vs. 4) |
 |  |  |  |  | 0.002 (group 2 vs. 3) |
 |  |  |  |  | 0.03 (group 2 vs. 4) |
 |  |  |  |  | 0.08 (group 3 vs. 4) |
8 | 2 | tet(M) and tet(O) | 32 | 24 - 48 | Â |
116 | 3 | tet(M) | 24 | 3 - 48 | Â |
22 | 4 | tet(O) | 24 | 16 - 32 | Â |