Methicillin-Resistant Staphylococcusaureus or MRSA is a strain of staph bacteria that was first identified in the 1960s. This superbug can spread through infected bedding and can cause red bumps, skin abscesses and life threatening infections. It is highly resistant to antibiotics; between 20 and 50 percent of cases are untreatable. Proper hygiene can prevent MRSA transfers.