TABLE 1.
Results of the Carba NP and CarbAcineto NP tests when performed on Acinetobacter spp. producing an acquired carbapenemase
| Carbapenemase | Acinetobacter species | No. of isolates | MIC (μg/ml) ofa: |
Carba NP test result | CarbAcineto NP test result | |
|---|---|---|---|---|---|---|
| IMP | MER | |||||
| Ambler class A | ||||||
| GES-type | ||||||
| GES-11 | A. baumanniib | 3 | 2 | 4 | − | − |
| GES-14 | A. baumannii | 5 | 24–32 | 16–32 | − | − |
| Ambler class B | ||||||
| NDM-type | ||||||
| NDM-1 | A. baumannii | 13 | >32 | >32 | + | + |
| NDM-2 | A. baumannii | 1 | >32 | >32 | + | + |
| IMP-type | ||||||
| IMP-1 | A. baumannii | 1 | 4 | 6 | + | + |
| IMP-4 | A. baumannii | 1 | 24 | 16 | + | + |
| VIM-type | ||||||
| VIM-4 | Acinetobacter sp. genomospecies 16 | 1 | >32 | >32 | + | + |
| SIM-type | ||||||
| SIM-1 | A. baumannii | 1 | >32 | >32 | + | + |
| Ambler class D | ||||||
| OXA-23 group | ||||||
| OXA-23 | A. baumannii | 68 | 24 to >32 | 8 to >32 | − | + |
| OXA-40 group | ||||||
| OXA-24/OXA-40 | A. baumannii | 8 | >32 | >32 | − | + |
| OXA-25 | A. baumannii | 1 | >32 | >32 | − | + |
| OXA-26 | A. baumannii | 1 | >32 | >32 | − | + |
| OXA-72 | A. baumannii | 9 | >32 | >32 | − | + |
| OXA-58 group | ||||||
| OXA-58 | A. baumannii | 24 | 16 to >32 | 8 to >32 | − | + |
| OXA-58 | A. haemolyticus | 1 | >32 | 8 | − | + |
| OXA-97 | A. baumannii | 1 | >32 | >32 | − | + |
| OXA-143 group | ||||||
| OXA-143 | A. baumannii | 2 | >32 | >32 | − | + |
| OXA-253 | A. baumannii | 1 | >32 | >32 | − | + |
| Multiple | ||||||
| GES-11 + OXA-23 | A. baumannii | 6 | 32 | >32 | − | + |
| NDM-1 + OXA-23 | A. baumannii | 3 | >32 | >32 | + | + |
a
IMP, imipenem; MER, meropenem.
b
A. baumannii indicates A. baumannii-A. calcoaceticus complex.