Appendix 1: Antimicrobial disk testing panels and interpretations Staphylococcus spp. Drug Details Zone (mm) / MIC (µg/ml) Comment Code µg S I R Plate 1 Cefoxitin S. aureus FOX 30 - Report as oxacillin ≥22 ≤21 CoNS FOX 30 - ≥25 ≤24 Ciprofloxacin CIP 5 16-20 ≥21 ≤15 Erythromycin E 15 14-22 ≥23 ≤13 Gentamicin CN 10 13-14 ≥15 ≤12 Penicillin P 10 - ≥29 ≤28 Co-trimoxazole SXT 25 11-15 ≥16 ≤10 Plate 2 Only set up if drugs on plate 1 are resistant (or if cefoxitin resistant) ≥3 Drug Details Zone (mm) / MIC (µg/ml) Comment Code µg S I R Chloramphenicol C 30 13-17 ≥18 ≤12 Clindamycin DA 2 15-20 ≥21 ≤14 Rifampicin RD 5 17-19 Do not report ≥20 ≤16 Tetracycline TE 30 15-18 Do not report ≥19 ≤14 Vancomycin
Appendix 1: Antimicrobial disk testing panels and interpretations Staphylococcus spp. Drug Details Zone (mm) / MIC (µg/ml) Comment Code µg S I R Plate 1 Cefoxitin Report as oxacillin S. aureus FOX 30 ≥22 - ≤21 CoNS FOX 30 ≥25 - ≤24 Ciprofloxacin CIP 5 ≥21 16-20 ≤15 Erythromycin E 15 ≥23 14-22 ≤13 Gentamicin CN 10 ≥15 13-14 ≤12 Penicillin P 10 ≥29 - ≤28 Co-trimoxazole SXT 25 ≥16 11-15 ≤10 Plate 2 Only set up if ≥3 drugs on plate 1 are resistant (or if cefoxitin resistant) Drug Details Zone (mm) / MIC (µg/ml) Comment Code µg S I R Chloramphenicol C 30 ≥18 13-17 ≤12 Clindamycin DA 2 ≥21 15-20 ≤14 Rifampicin RD 5 ≥20 17-19 ≤16 Do not report Tetracycline TE 30 ≥19 15-18 ≤14 Do not report Vancomycin
Antimicrobial_Sensitivity_Disk_Difussion.docx