TABLE 2.
Cefotaxime resistance transfer experiments
| Isolate | Yr/country of isolation | Antimicrobial resistance patterna | ESBL gene | PFGE type | Transfer of resistance to ESC by:
|
Transferred resistance traitsa | Plasmids carrying ESBL genes in transconjugants (size [kb], replicon type) | |
|---|---|---|---|---|---|---|---|---|
| Conjugation | Transformation | |||||||
| 04-347 | 2004/France | AMX CRO CAZ STR SPT GEN SXT CHL TET | blaCTX-M-15 | X11a | Yes | AMX CRO CAZ STR SXT CHL TET | 200, IncY/IncA/C2 | |
| 04-7498 | 2004/France | AMX CRO CAZ STR SPT GEN SXT CHL TET | blaCTX-M-15 | X12 | No | |||
| 04-8041 | 2004/France | AMX CRO CAZ STR SPT GEN SXT CHL TET | blaCTX-M-15 | X12 | No | No | ||
| 05-0004 | 2005/France | AMX CRO CAZ STR SPT GEN SUL TET | blaCTX-M-15 | X11b | No | No | ||
| 05-2657 | 2005/France | AMX CRO CAZ STR SPT GEN SUL CHL TET | blaCTX-M-15 | X11b | No | |||
| 05-5343 | 2005/France | AMX CRO CAZ STR GEN SXT CHL TET NAL | blaCTX-M-15 | X17 | Yes | AMX CRO CAZ STR GEN SXT CHL TET NAL | 300, IncHI2 | |
| 06-8636 | 2006/France | AMX CRO CAZ STR KAN GEN SXT CHL | blaCTX-M-15 | X18 | No | |||
| 06-8404 | 2006/France | AMX CRO CAZ STR KAN GEN SXT CHL | blaCTX-M-15 | X18 | No | No | ||
| 07-690 | 2001/Norway | AMX CRO CAZ SXT CHL | blaSHV-12 | X10c | Yes | AMX CRO CAZ | 340, IncI1 | |
| 07-693 | 2002/Norway | AMX CRO CAZ SXT CHL | blaSHV-12 | X10c | Yes | AMX CRO CAZ | 340, IncI1 | |
| 07-698 | 2004/Norway | AMX CRO CAZ STR SPT GEN SXT CHL TET | blaCTX-M-15 | X11c | No | |||
| 07-699 | 2005/Norway | AMX CRO CAZ STR SPT GEN SXT CHL TET | blaCTX-M-15 | X13 | No | No | ||
a
AMX, amoxicillin; STR, streptomycin; SPT, spectinomycin; GEN, gentamicin; CHL, chloramphenicol; SUL, sulfonamides; SXT, sulfamethoxazole-trimethoprim; TET, tetracycline.