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Table 4 Resistance to antimicrobials by B. cereus sensu lato isolated from dairy farms and milk products

From: Prevalence, virulence factor genes and antibiotic resistance of Bacillus cereus sensu lato isolated from dairy farms and traditional dairy products

Antibiotic aBreakpoints bInterpretation n (%)
S (≤) R (≥) S I R
Amoxicillin 4 8 0 0 96 (100)
Ampicillin 0.25 0.5 0 2 (0.02) 94 (98)
Cefepime 0 0 0 0 96 (100)
Chloramphenicol 8 32 95 (99) 1 (0.01) 0
Ciprofloxacin 1 4 96 (100) 0 0
Clindamycin 0.5 4 96 (100) 0 0
Erythromycin 0.5 4 88 (92) 8 (8) 0
Gentamicin 4 16 96 (100) 0 0
Oxacillin 2 4 3 (3) 5 (5) 88 (92)
Penicillin 0.12 0.25 0 0 96 (100)
Quinupristin/dalfopristin 1 4 96 (100) 0 0
Rifampin 1 4 96 (100) 0 0
Tetracycline 4 16 93 (97) 3 (3) 0
Trimethoprim/sulfamethoxazole 2 4 0 19 (20) 77 (80)
Vancomycin 4 >4 96 (100) 0 0
  1. aThe breakpoints against B. cereus in the CLSI guideline M45A2E (2010) and M45-P (2005) were used for all antimicrobial agents except oxacillin and quinupristin/dalfopristin for which the breakpoints for Staphylococcus spp. in the CLSI guidelines M 100-S22 (2012) and S24 (2014) were used
  2. b S susceptible, I intermediate, R resistant