TABLE 2.

Drug susceptibilities of blaIMP-positive P. putida strains

PFGE patternStrainIsolation wardaMIC (μg/ml)bTransfer of blaIMPc
IPMMEMCAZFEPATMPIPGENTOBAMKNOR
A1W732>128>128643232643232128
14W664>128>12812812864646464128
18W7 (E)64>128>128643216646464128
20W7 (E)64>128>128643232128128128128
29W764>128>12864643212812864>128+ (TF)
a14S664>128128643216323232128
8S764>128>12812816881616128
11S432>128128>1283232646432128
16W7128>128>128>128326412864128128
a213W4128>128>1283264326432>128128+ (C)
22W7128>128>128>128643212864>128128+ (C)
27W7128>128>128>128643212864>128128+ (C)
a317W7>128>128>128>128646412864>128128+ (C)
B2W464>128>1286432162<0.5641+ (C)
7S764>128>12812832322<0.51282+ (C)
9W764>128>128128321624641+ (TF)
b12W7128>128>128643216211281+ (C)
19W7 (E)64>128>128128321620.5641+ (C)
31W46464>128128321620.51281+ (C)
32W4 (E)6464>128128321620.51281+ (C)
C3W6161286464321621641+ (C)
D5W364>128>12864643212812864>128+ (C)
E6E2166464641286484642
F10W432>128>1286432168326432+ (TF)
G15W716>128>128>12832>12864641284+ (TF)
H21W7 (E)64>128>128128321664321281+ (C)
h23W432>128>128>128321612864>1281+ (C)
25W464>128>128643216128321281+ (C)
I24W4128>128>128>12832>128283216+ (C)
J26S71664128643216223232
K28W483232168824328+ (C)
L30W31664>128>12816824168+ (C)
  • a E, environmental isolate.

  • b Drug abbreviations: MEM, meropenem; FEP, cefepime; ATM, aztreonam; PIP, piperacillin; GEN, gentamicin; TOB, tobramycin; AMK, amikacin; NOR, norfloxacin.

  • c Transfer of the blaIMP gene was performed using a recipient of P. aeruginosa strain ML5017 by conjugation (C) or transformation (TF). −, no transfer.