What Does MRSA Stand For? MRSA stands for: Methicillin (a penicillin related antibiotic) Resistant (the bacteria is not affected by the antibiotic) Staphylococcus Aureus (the bacteria that causes the infection) It is pronounced either by saying all four letters, or calling it mer-sa. What is MRSA? MRSA is a type of microorganism that can lead to different kinds […]