Table 3.
Proportion of gram-positive versus gram-negative organisms susceptible to antimicrobials (number shown as % susceptible).
| Rating/Antimicrobial | Gram-positives | Gram-negatives |
|---|---|---|
| Low | ||
| Chloramphenicol | 167 of 176 (95%) | 108 of 167 (65%) |
| Doxycycline | 75 of 91 (82%) | 57 of 103 (55%) |
| Penicillin | 131 of 185 (71%) | NA |
| Tetracycline | 88 of 192 (46%) | 103 of 182 (57%) |
| Medium | ||
| Gentamicin | 150 of 192 (78%) | 128 of 182 (70%) |
| TMS | 163 of 192 (85%) | 88 of 181 (49%) |
| High | ||
| Ceftiofur | 154 of 176 (88%) | 111 of 168 (66%) |
| Enrofloxacin | 127 of 188 (68%) | 126 of 182 (69%) |
| Amikacin | 77 of 179 (43%) | 154 of 166 (93%) |
NA = not applicable; TMS = trimethoprim–sulfamethoxazole. Importance rating of antimicrobials is classified according to the Australian Strategic and Technical Advisory Group on Antimicrobial Resistance (ASTAG).1