Table 4. Antimicrobial susceptibility testing of the Kocuria salsicia isolates (KS1–KS9)

Sample (no. of isolates) Isolate ID MIC value (interpretation) MDR
Antimicrobial agent
AMK CHL CLI GEN POD ENO ERY MAR MIN NIT PRA SXT
Cheese brine PC ≤2 (S) 8 (S) ≤0.12 (S) ≤0.5 (S) 2 (S) 0.12 (S) ≤0.25 (S) 0.25 (S) 0.25 (S) 16 (S) 0.12 (S) ≤10 (S) 1)
KS1 ≤2 (S) ≤4 (S) 0.25 (S) ≤0.5 (S) 1 (S) 2 (I) ≤0.25 (S) ≥4 (R) 1 (I) 256 (R) 1 (I) ≤10 (S)
KS2 4 (S) ≤4 (S) ≤0.12 (S) 1 (S) 2 (S) ≥4 (R) ≤0.25 (S) ≥4 (R) ≥16 (R) 256 (R) 2 (R) ≤10 (S) +2)
KS3 ≤2 (S) ≤4 (S) ≤0.12 (S) ≤0.5 (S) 1 (S) 2 (I) ≤0.25 (S) ≥4 (R) 8 (R) ≥512 (R) 0.25 (S) ≤10 (S) +
KS4 ≤2 (S) 8 (S) 0.5 (S) ≤0.5 (S) 2 (S) ≥4 (R) ≤0.25 (S) ≥4 (R) 1 (I) 256 (R) 1 (I) ≤10 (S)
KS5 4 (S) ≤4 (S) ≤0.12 (S) 1 (S) 1 (S) ≥4 (R) ≤0.25 (S) ≥4 (R) 8 (R) 256 (R) 1 (I) ≤10 (S) +
KS6 ≤2 (S) ≤4 (S) 0.25 (S) ≤0.5 (S) 1 (S) ≥4 (R) ≤0.25 (S) ≥4 (R) 1 (I) 256 (R) 0.5 (I) ≤10 (S)
KS7 4 (S) ≤4 (S) 0.25 (S) 1 (S) 4 (I) ≥4 (R) ≤0.25 (S) ≥4 (R) ≥16 (R) ≥512 (R) 2 (R) ≤10 (S) +
KS8 ≤2 (S) ≤4 (S) 0.25 (S) ≤0.5 (S) 0.5 (S) ≥4 (R) ≤0.25 (S) ≥4 (R) ≤0.5 (S) 256 (R) 1 (I) ≤10 (S)
KS9 4 (S) ≤4 (S) 0.25 (S) 1 (S) 0.5 (S) ≥4 (R) ≤0.25 (S) ≥4 (R) 4 (R) 256 (R) 2 (R) ≤10 (S) +
– indicates a negative result for antimicrobial resistance against more than three antimicrobial categories.
+ indicates a positive result for antimicrobial resistance against more than three antimicrobial categories.
MIC, minimum inhibitory concentration; AMK, amikacin; CHL, chloramphenicol; CLI, clindamycin; GEN, gentamicin; POD, cefpodoxime; ENO, enrofloxacin; ERY, erythromycin; MAR, marbofloxacin; MIN, minocycline; NIT, nitrofurantoin; PRA, pradofloxacin; SXT, trimethoprim/ sulfamethoxazole; (R), resistant; (I), intermediate; (S), susceptible; MDR, multidrug-resistant; PC, positive control (Staphylococcus aureus ATCC 29213); KS1–KS9, K. salsicia KS1–KS9; ATCC, American Type Culture Collection.