Table 2. Inhibition Zonea of Standard Antibiotics on Tested Bacteria.
| Antibiotic Disc | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Bacterial species | NFb | CBb | NBb | DXb | OXb | Vanb | Cefb | Tetb | Penb |
| Gram positive | |||||||||
| S. aureus | R | 13 | 31 | 15 | R | 15 | 25 | 20 | 30 |
| B. cereus | R | 7 | 18 | 18 | R | 15 | 12 | 14 | R |
| S. epidermidis | R | 36 | 29 | 21 | R | _ | _ | _ | _ |
| Gram negative | |||||||||
| E. coli | R | R | 17 | 11 | R | _ | _ | _ | _ |
| K. pneumoniae | R | R | 11 | R | _ | R | 13 | R | R |
| P. aeruginosa | R | R | 16 | R | R | R | R | R | R |
| S. Typhi | R | 27 | 34 | 30 | R | _ | _ | _ | _ |
| P .mirabilis | _ | _ | _ | _ | _ | R | 19 | R | 15 |
a Diameter of Disc: 6 mm
b Abbreviations: NF, Nafcillin 1 mcg; CB, Carbenicillin 100 mcg; NB, Novobiocin 30 mcg; DX, Doxycycline 30 mcg; CL, Colistin 10 mcg; MT, Methicillin 5 mcg; OX, Oxacycline 1 mcg; R, Resistance