Methicillin-resistant Staphylococcus aureus (MRSA) is a bacterial pathogen whose resistance to beta-lactam antibiotics stems from the acquisition of the mecA gene, which encodes an altered penicillin-binding protein that prevents conventional antimicrobial therapy from disrupting cell wall synthesis. This genetic mechanism, combined with the pathogen’s capacity to acquire additional resistance determinants through horizontal gene transfer, has positioned MRSA as a persistent challenge in both healthcare and community settings. Recent Canadian surveillance data from 88 sentinel acute care hospitals reveals a troubling shift: between …
