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. 2017 Aug 26;9(9):2292–2307. doi: 10.1093/gbe/evx162

Table 3.

DSM30011 Antimicrobial Susceptibility Phenotypes

Method and Antimicrobials Tested
1) Vitek-2 MIC (µg/ml)
DSM30011 ATCC17978 ATCC19606
Ampicillin 16 (R)a 16 (R) ≥32 (R)
Cefotaxime 8 (S) 8 (S) 16 (R)
Ceftazidime 4 (S) 4 (S) 16 (I)
Cefepime 2 (S) ≤1 (S) 16 (I)
Imipenem ≤0.25 (S) ≤0.25 (S) ≤0.25 (S)
Meropenem ≤0.25 (S) ≤0.25 (S) 1 (S)
Amikacin ≤2 (S) ≤2 (S) ≤2 (S)
Gentamicin ≤1 (S) ≤1 (S) 8 (I)
Nalidixic acid ≤2 (S) 8 (S) ≤2 (S)
Ciprofloxacin ≤0.25 (S) ≤0.25 (S) 1 (S)
Nitrofurantoin ≥512 (R) ≥512 (R) 256 (R)
Colistin ≤0.5 (S) ≤0.5 (S) ≤0.5 (S)
Sulfamethoxazole/Trimetoprim (23.75/1.25) ≤20 (S) 160 (R) ≥320 (R)
2) Disk Diffusionb Diameter Halo (mm)

Tetracyclin (30 µg) 23 (S)
Azithromycin (15 µg) 30 (n.s.c)
Erythromycin (15 µg) 27 (n.s.)
Chloramphenicol (30 µg) 15 (n.s.)
a

Susceptibility interpretation (S: susceptible; R: resistant; I: intermediate) according to CLSI standards.

b

Tested only in DSM30011.

c

n.s.: not specified in the case of Acinetobacter spp., which are considered intrinsically resistant to these antibiotics. In the case of enterobacterial species such as Salmonella enterica serovar Typhi a 13 mm zone diameter for azithromycin (15 µg disk) is considered the limit separating susceptible from nonsusceptible isolates, and a 15 mm zone diameter for chloramphenicol (30 µg disk) corresponds to an isolate displaying intermediate resistance to this antibiotic.