Box 9. Note.
| Cross-allergenicity between penicillins and monobactams is extremely low. |
| Although ceftazidime and aztreonam have identical side chains, this is of only partial clinical relevance. |
| Cross-allergenicity between penicillins and monobactams is extremely low. |
| Although ceftazidime and aztreonam have identical side chains, this is of only partial clinical relevance. |