TABLE 3.
Antimicrobial resistance patterns, bla genes, class 1 integrons, phage types, and XbaI PFGE types of S. enterica serotype Typhimurium isolates under studya
| Antimicrobial resistance pattern | n (%) | β-Lactam resistance gene (n) | Integron PCR size (kb)b | Phage type (n)c | Combined-type phage type-PFGE type (n)c |
|---|---|---|---|---|---|
| ASSpSuCTe | 156 (48.8) | blaPSE-1 (147) | 1, 1.2 | DT120 (2), DT104 (135), U302 (7), NT (3) | DT120-X3 (2), DT104-X1 (23), DT104-X8 (9), DT104-X12 (1), DT104-X4 (1), U302-X5 (1), U302-X1 (3), U302-X8 (1), NT-X1 (2) |
| blaOXA-30 (9) | 2 | DT41 (1), DT120 (5), DT204c (2), RDNC (1) | DT41-X11 (1), DT120-X6 (4), DT204c-X11 (2), RDNC-X29 (1) | ||
| Pansusceptible | 69 (21.5) | DT1 (4), DT3 (1), DT8 (15), DT12 (5), DT14 (10), DT27 (1), DT40 (1), DT41 (4), DT49 (7), DT56 (1), DT68 (2), DT104 (2), DT104at (3), DT108 (1), DT135 (1), DT161 (1), DT180 (1), DT184 (1), DT193 (2), U302at (1), RDNC (5) | DT1-X42 (1), DT3-X43 (1), DT8-X23 (7), DT12-X14 (1), DT12-X45 (1), DT14-X18 (1), DT14-X36 (4), DT27-X21 (1), DT40-X33 (1), DT41-X24 (1), DT49-X19 (1), DT49-X24 (1), DT56-X34 (1), DT68-X26 (1), DT68-X31 (1), DT104-X1 (2), DT104at-X28 (1), DT104at-X44 (1), DT135-X35 (1), DT193-X55 (1), RDNC-X31 (1) | ||
| Te | 27 (8.5) | DT12 (4), DT22 (1), DT104at (4), DT120 (2), DT190 (1), DT193 (3), DT208 (10), NT (1), RDNC (1) | DT104at-X28 (1), DT120-X47 (1), DT193-X37 (1), NT-X30 (1) | ||
| ASSuTe | 12 (3.8) | blaTEM (12) | NDa | DT120 (5), U302at (6), NT (1) | DT120-X22 (2), DT120-X39 (1), DT120-X49 (1), U302at-X20 (1) |
| ASSpSuCTeNal | 12 (3.8) | blaPSE-1 (11) | 1, 1.2 | DT104 (9), NT (2) | DT104-X1 (2), NT-X1 (1) |
| blaOXA-30 (1) | 2 | DT120 (1) | DT120-X6 (1) | ||
| ASSpSuCTeTmp | 10 (3.0) | blaPSE-1 (9) | 1, 1.2 | DT104 (9) | DT104-X1 (3), DT104-X7 (1) |
| blaTEM, blaOXA-30 (1) | 2 | DT120 (1) | DT120-X6 (1) | ||
| SSpSu | 7 (2.2) | DT104 (7) | DT104-X1 (3) | ||
| ASu | 6 (1.8) | blaPSE-1 (5) | 1.2 | DT104 (5) | DT104-X1 (4) |
| blaTEM (1) | ND | DT14 (1) | DT14-X40 (1) | ||
| SuTmpTe | 3 (0.9) | DT104at (1), DT120 (1), DT186 (1) | DT104at-X48 (1), DT120-X46 (1), DT186-X14 (1) | ||
| ATe | 2 (0.6) | blaTEM (2) | ND | DT104at (1), U302at (1) | DT104at-X41 (1) |
| SSu | 2 (0.6) | DT104at (1), DT120 (1) | |||
| S | 2 (0.6) | DT12 (1), DT104at (1) | |||
| ASSpSu | 1 (0.3) | blaOXA-30 (1) | 2 | DT204c (1) | DT204c-X16 (1) |
| ASSpKSuCTe | 1 (0.3) | blaPSE-1 (1) | 1, 1.2 | DT104 (1) | DT104-X1 (1) |
| ASSpKToGSuCTe | 1 (0.3) | blaPSE-1 (1) | 1, 1.2 | DT104 (1) | DT104-X2 (1) |
| ACro (BLSE) | 1 (0.3) | blaTEM-52 (1) | ND | DT146 (1) | DT146-X38 (1) |
| ASSpSuCTeNalCip | 1 (0.3) | blaOXA-30 (1) | 2 | DT12var (1) | DT12var-X13 (1) |
| Su | 1 (0.3) | U281 (1) | |||
| STe | 1 (0.3) | RDNC (1) | RDNC-X50 (1) | ||
| SuTmp | 1 (0.3) | DT12 (1) | DT12-X14 (1) | ||
| ASSuTmpC | 1 (0.3) | blaTEM (1) | 1.5 | NT (1) | NT-X27 (1) |
| ASKSulTe | 1 (0.3) | blaTEM (1) | ND | DT99 (1) | DT99-X32 (1) |
| ASulTmpTe | 1 (0.3) | blaTEM (1) | 1.5 | DT8 (1) | DT8-X23 (1) |
| A | 1 (0.3) | blaTEM (1) | ND | U302at (1) | U302at-X14 (1) |
a
n, number of isolates.
b
ND, none detected.
c
NT, not typeable; at, atypical; var, variant.