Table 3.
Sensitivity of Staphylococcus epidermidis isolate to 22 antimicrobials
| Antimicrobials | Concentration | Inhibition zone (mm) Mean ± SE |
Sensitivity |
|---|---|---|---|
| Ampicillin | 10 mcg | 0.00 ± 0.000j | R |
| Oxacillin | 1 mcg | 15.00 ± 0.265g | R |
| Amoxicillin | 25 mcg | 8.00 ± 0.132i | R |
| Gentamicin | 10 mcg | 11.00 ± 0.153h | R |
| Vancomycin | 30 mcg | 18.00 ± 0.200e | S |
| Erythromycin | 15 mcg | 0.00 ± 0.000j | R |
| Cefoxitin | 30 mcg | 12.00 ± 0.058h | R |
| Fusidic acid | 10 mcg | 12.00 ± 0.252h | R |
| Clindamycin | 10 mcg | 14.00 ± 0.000g | R |
| Polymyxin B | 300 unit | 16.00 ± 0.098f | R |
| Tetracycline | 30 mcg | 14.00 ± 0.100g | R |
| Doxycycline | 30 mcg | 21.00 ± 0.058d | S |
| Tigecycline | 15 mcg | 23.00 ± 0.577c | S |
| Oxolinic acid | 2 mcg | 15.00 ± 0.115g | R |
| Flumequine | 30 mcg | 18.00 ± 0.289e | R |
| Ciprofloxacin | 30 mcg | 25.00 ± 0.153b | S |
| Enrofloxacin | 5 mcg | 30.00 ± 0.100a | S |
| Levofloxacin | 5 mcg | 32.00 ± 0.173a | S |
| Nitrofurantoin | 300 mcg | 20.00 ± 0.289d | S |
| Novobiocin | 30 mcg | 34.00 ± 0.000a | S |
| Florfenicol | 30 mcg | 25.00 ± 0.115b | S |
| Sulfamethoxazole /trimethoprim | 25 mcg | 23.00 ± 0.200c | S |
| F (df1, df2) | 2021 (21, 44) | ||
| P value | 0.00001 |
mcg Microgram, R Resistant, S Sensitive, data are presented as mean ± SE, SE: standard error of mean (n = 3). Statistically significant differences were observed at p < 0.05 (ANOVA, Tukey’s post hoc)