Table 1

Effect of various antibiotics on the bacterial counts in cultures of S. aureus. S. aureus (DSM 20233 strain) bacteria were incubated in complete medium for 4 hours in the presence of antibiotics. Subsequently, bacterial suspensions were spread on COS blood agar plates. Colonies were counted after an overnight incubation.

Treatment
bacteria/ml

starting concentration
4 × 106
4 hours without antibiotics
5.1 × 107
4 hours with 1 × MIC flucloxacillin
1.8 × 105
4 hours with 1 × MIC ciprofloxacin
2.5 × 103
4 hours with 1 × MIC gentamicin
5.2 × 105
4 hours with 1 × MIC erythromycin
8.3 × 105
4 hours with 20 × MIC flucloxacillin
10
4 hours with 20 × MIC ciprofloxacin
0
4 hours with 20 × MIC gentamicin
0
4 hours with 20 × MIC erythromycin
5.9 × 105

Lotz et al. Annals of Clinical Microbiology and Antimicrobials 2006 5:15   doi:10.1186/1476-0711-5-15