Methicillin resistance was thought to be tied to prescription, in part because methicillin-resistant bugs were first isolated from British hospitals just a year after the drug became available for clinical use.

甲氧西林耐药性过去被认为与处方药有关，部分原因是在该处方药用于临床一年后，英国医院分离出了耐甲氧细菌。