Mercer Infection is the one of the colloquial terms given for MRSA (Methicillin-Resistant Staphylococcus Aureus) infection. Initially, Staphylococcal resistance to antibiotics (especially to Penicillin) was unheard of. However, bacterias can mutate and develop good resistance against antibacterial medications including Penicillin, such as Methicillin, as well as against other Beta-lactam