MRSA (Methicillin-resistant Staphylococcus aureus) is a type of bacterial infection which commonly affects the skin causing boils, abscesses and other skin infections. If MRSA goes unrecognized or untreated it can extend to deeper tissue and even enter the bloodstream. It can also result in bacterial infections like pneumonia, meningitis and other life threatening illnesses very rapidly. The most significant concern regarding MRSA is its resistance to commonly used antibiotics, which can make the MRSA infection more aggressive and difficult to treat.